This is a bad hurricane season. You want to be ready so you ask yourself, “What size portable generator do I need?”
The megastorms don’t happen very often, thank goodness. Here at the Generator Grader, our hearts go out to all those affected by these unpredictable storms.
When a storm threatens, we consider our options in a power outage. Will we be lucky again? Or unlucky again? Truth is, it’s better to be safe than sorry. A portable generator is a good investment even when the weather is nice. If you’re visiting this site for a possible emergency, or if you already own a portable generator, just remember, “Always be safe!”
To save you some time, many new generator purchasers are only interested in one that can handle their refrigerator/freezer in a power outage. If that is you, look at one that provides at least 2000 surge watts. Although most refrigerators require less than 1000 watts to run, when the compressor cycles on, they need the additional watts.
What size?
You’ve made a decision to get a portable generator. Great! A common question that I get from shoppers looking for a portable generator is, “What size portable generator do I need for home use?” The best answer to this question is not very popular. The answer is, “It depends”.
Many people go make their portable generator purchase and wish that they had considered all the factors first. Let’s face it, generators are expensive and you don’t want to waste one while you purchase the one you should have bought in the first place.
Take for example two best selling generators. The Earthquake ig800w is an 800 watt inverter generator that can only power one or two items at a time. The equally popular Generac xg8000e is an 8000 watt generator that has enough power to hook up to your home’s power panel to supply most of your needs in a power outage.
Why one group of people think that one size is what they need and another group of people think a completely different size is what they need is why “it depends”.
For a better explanation of “it depends”, read below and take a look at the handy table which provides the estimated wattage requirements of some standard household devices and appliances.
Running Watts vs. Surge Watts – What’s the Difference?
The two columns on the table that you need to understand are the “running” watts and “starting” or “surge” watts. The difference is that all devices require a certain number of watts to run continuously AND some require an additional number of watts to start or to cycle on. This is why portable generators are rated for their running watts and their surge watts. Running watts are generally 90% of surge watts on most portable generators. A generator should not be expected to run continuously above their rated running watts.
device running watts starting (surge) watts
Electrical Water Heater (40 gal.) 4000 0
Hot Plate 2500 0
Electric Stove - each element 1500-2500 0
Window Air Conditioner - 12000 BTU 1200 1800
Microwave - varies 625 800
Well Water Pump 1000 1000
Sump Pump 800 1200
Refrigerator Freezer 800 1200
Deep Freezer 500 500
Furnace Blower 800 1300
Computer 800 0
Television 500 0
Stereo 400 0
DVD Player 100 0
Box Fan 300 600
Clock Radio 300 0
Light Bulb 75 0
Radial Arm Saw 2000 2000
Circular Saw 1500 1500
Miter Saw 1200 1200
Reciprocating Saw 960 1040
Electric Drill 600 900
Air Compressor (1 HP) 1500 3000
Garage Door Opener 480 600
Security System 180 0
Resistive type devices do not require surge watts. These are generally heat producing devices such as light bulbs, toasters and coffee makers. Devices and appliances with an electric motor in them require an additional requirement of watts to “start” them. Starting can be as simple as flipping a switch as in a hair dryer or power drill. “Starting” in a refrigerator is quite different and will start and stop repeatedly. Listen closely to your refrigerator and you will hear it cycle on periodically as its fan, compressor or defrost cycle starts. These “surge” watts can be sometimes be two or three time the watts necessary to simply run the device.
What Size Portable Generator Do I Need?
When calculating the watts that you’ll need, you must consider this extra watt requirement. In reading this table, take a standard refrigerator/freezer for example. To continuously run the unit, you need approximately 800 watts. However when the compressor kicks in, it requires a the additional 1200 surge watts. So it takes 2000 watts to supply ongoing power to your refrigerator/freezer.
As it settles into its running watt requirement of 800, the difference of 1200 watts can then be used to power something else. If you have a low to mid watt generator (up to 3500 running watts) you may opt to run your refrigerator most of the time and and rely on it keeping itself cold with the doors closed, then unplug and switch the power to other needs.
Be aware when looking at other tables on other sites which explain estimated wattage requirements. Some include the running watts already added in the surge watt column.
So to give a better answer than, “It depends”, you need to ask yourself, “What do I need the portable generator for?”
- emergency use in power outage situations
- to hook into your home’s power as a standby
- for now and then use around the house
- for use on the job in remote locations away from electrical outlets
- for camping, tailgating, RV use
- all of the above?
Now ask yourself, “When using the portable generator for my purpose, what will I want to supply power to, and how many at the same time?”
Here’s a good rule of thumb, add up the running watts for the MOST devices that you’ll need at any given time. Then add in the highest surge watt requirement for any of those devices.
You then have the minimum watt requirement for the generator you’ll need. With well timed use of devices that don’t need to be used constantly, this should be enough power for you. If not, remember that you will have to unplug one or another to have enough wattage available. But here’s some wise words, no one ever said, “I wish I had LESS power.”
Let’s say for example that you have a power outage and you want to keep your refrigerator/freezer running continuously. According the the estimated watts on the table, you need 800 watts to power it, but will need periodic “surge” watts of 1200. Now if you’re running other devices off of the generator at the same time, for example a TV, stereo, and several lights, for an approximate total of 2000 running watts, and you are drawing at, or near the peak rated watts of your generator, when your refrigerator “surges” and you exceed the rated watts of your generator, you can trip the breaker and you’ll lose power output.
What Do I Need to Know about Watts and Amps?
Remember, this table is for convenience only and the figures are only estimates. Most appliances have their watt requirement (or Amps) usually printed somewhere on your device. The watts that you read on your device are not always the wattage that it will require. For example an 1100 watt hair dryer will produce 1100 watts of heat, but require more watts than that to power it. More accurately, if you know the Amp draw of your device, there is a handy formula that will let you calculate your watts:
Amps x Volts = Watts
Volts is nearly always 120 in the US. If you know that your device requires 10 amps, then 10 amps x 120 volts = 1200 watts. Similarly you can calculate your Amps with the formula:
Amps = Watts/Volts
So you know your appliance is 1200 watts. Divide that by 120 (Volts) and that gives your your Amps equal to 10.
Sorry for the math lesson, but here at the GeneratorGrader we want to make sure that what you should know is available to you. See the article titled How a Portable Generator Works for a more detailed explanation of volts, watts and amps.
After you determine the size that will make you happy, you might want to consider other factors in determining the right portable generator for you. There are noise considerations. Whether you want to fuel with gas, propane, or diesel, or a combination of two or more fuels. Whether you require pure electrical energy for sensitive electronics. As you can see, when asking yourself, “What size portable generator do I need?”, you might want to arm yourself with more knowledge available in the other articles on this site.
In summary, ask yourself these pertinent questions before you decide on power alone. There is quite a difference between a 2000 watt All Power and a 2000 watt Yamaha inverter. More than just the $800 price difference! Once you know what size you want, know the advantages of an inverter type vs. a standard generator.
All Power APG3014 2000 watt generator
Yamaha ef2000is 2000 watt inverter generator
Filed under: What Size I Need
Hello:
I came upon your article in my search for the proper size generator for my sump pump. Unfortunately the manufacture of the pump I bought [ Murray ] only will give me a guess as to the staring amp’s [ 2x to 3x ] the full load of 6 amp’s . I was going to buy a low price Champion 1500 watt generator, because of the light weight & seldom loss of power in our area. Your formula for a sump pump show’s a 1.5x surge.
120x6x2=1400 watt’s
120x6x3=2160 watt’s
120x6x1.5=1080 watt’s
The price difference between the Champion & a light weight Yamaha 2000 watt is $800.00. Given my choice what would you
do ?
Thank you
Go with Yamaha. It will power your pump and have a little extra for your small items
Hi Bob,
The estimated surge (starting) watts on the table above is for estimation only and is on the low end. Does your sump pump have a faceplate that states the running watts?
Unfortunately, one of the main complaints by users of portable generators is that they don’t run at their maximum rating very well. Let’s say your sump pump is rated at 800 watts. If, as Murray suggests, you will need up to a 2400 watt surge rating. To purchase a unit near this maximum is a gamble. You’d hate to spend all that money on something that in the end bogs down on you.
If your power goes out infrequently as you say, you may not need the lightweight or quiet of an inverter like the Yamaha (unless you plan to use it for other things which makes it a good choice).
I can’t spend your money for you, but I recommend buying as much wattage as your budget will allow. If you were considering the $900 2000watt Yamaha, you could buy a sweet non-inverter for less than $500. You could get 5000 watts and 120/240 volt capability. You’d have no trouble with the sump pump and have the extra power to take care of other creature comforts during those outages. It’s not the most efficient use of fuel to power, but it’s an emergency.
No one ever said, “I wish I bought less power.” Let me know how it turns out.
Good luck,
Ray
Hi Peter. You can look at the information on the plate on the back of the unit. Look for Amps or BTU’s. British Thermal Units (BTU) will tell you the cooling capacity of your AC. More importantly, you can estimate that 10,000 will need almost 10 Amps. Or Amps will be listed directly.
Your AC unit may be larger or smaller than that. If you are powering your AC with 120 volts from a portable generator, use the formula Watts = Volts x Amps. If you need 10 Amps, then times 120 Volts equals 1200 watts.
This will “run” the AC. Be advised though that when the compressor “kicks in” it will require more power. This additional surge requirement could mean you need another 1000 watts available to keep it running.
Now you’ll need 2200 watts of power to run your AC. You can do the calculations based on your specific AC.
Recommendation, don’t expect a generator at the maximum rated power to meet your needs. Often, portable generators struggle at their rated power. Get as much power as you can afford so that you can run other devices at the same time.
Hope this helps.
Ray
Hi!
I want advice as to what capacity of generator i will need to buy to supply a home of 6 bedrooms, 2 deep freezers, entertainment system, 3 mid-size air conditioners,deep well water pump, and water heater in 2 bathrooms?
In contrast, what capacity is enough to handle a town home? Thanks in advance.
Hi Theo,
Thanks for the question, however it is not an easy one to answer. You must first find out the power requirements of all of the things that may be running at the same time. For example you may have 6 bedrooms, but not all used at the same time. The freezers will always be running. You can purchase a portable generator at 10kW to 15kW, but you’ll probably want to hook it up to your home’s power panel via transfer switch, especially since you want power access to so many areas (can’t run cords). That way, you can switch power around to where you need it at the time.
If you want to have a set and forget type of system, you might consider a standby generator at 20kW. It’s built in and automatically powers your home when power is lost. It is a bit more pricey and not portable, for the peace of mind and convenience. If you outages are not frequent, and cost is a factor, go large portable.
For your town home, depending on the layout with your neighbors, the placement of your unit will be a factor, however, you might be able to get by with a 7.5kW portable in most cases.
Hope this helps. Let me know if you have any more questions.
Ray
We have bought a 800 watt generator and would like to know if it will power a 5000 BTU A/C unit and a light? Please respond and let me know. Thanks so much.
Beverly
This assumes that you do not have access to the plate on your A/C detailing the Amps. If you do, use those figures or contact the maker.
The relationship between BTU and watts is somewhere between 9 and 12 BTU’s/watt. This means somewhere between 400watts and 550 watts for your 5000BTU A/C.
If it is an 800 watt generator, it is only providing 120volts. At 120volts, your amps would be between 3.5 and 4.6 depending on your A/C’s BTU/watt ratio.
Short answer is that there are enough watts in you generator to run it, but possibly not enough to start it as it needs often many times the running watts when the unit turns on.
Please check with your manufacturer or certified electrician, which I am not. Good luck.
Ray
Hi Ray,
I am so confused! Ok, I am looking to run a 1500 watt portable heater in my car for my dogs when I am parked for a extended period of time. I am looking at a 2000 surge watt generator with a 1400 average. Will this power the heater? I am not connecting anything else, and I cannot find anything on the surge requirements of the heater. Can you help please? Thank you. Jeff
Hi Jeff,
Normally portable heaters do not require surge watts. However you are asking too much of a generator to power an appliance that requires 1500watts where the running watts is recommended at 1400watts. It is generally not recommended to use the additional surge capacity of your generator to power an item ongoing. You may cause your generator to shut down leaving your dogs in the cold. I know its difficult to find portable heaters at less wattage. If not you may have to step up the size of your generator.
You might investigate battery inverters which could provide the 1500 watts you need, but you’ll need to know the battery requirements and how long you can run the heater on those batteries. That would keep from having to carry around the generator and fuel.
Good luck,
Ray
Ray,
Thank you for the clarification and help. From doing more research it appears a 2000 watt generator won’t do me much good anywhere else ie: power saws, compressors, etc. Basically just small tailgating stuff. You saved me some cash and my dogs appreciate that! Your the best! Jeff
I need to power to televisions and a speaker what size generator would I need. Or what factors do I have to consider? So lost…
Hi Amanda,
Yes it can be confusing.
The first thing to do is take the watts required to run each of the items you want to power. If you expect to run each of these at the SAME time, you must add up the wattage requirements. You’ll find the wattage requirements printed on the item usually on the back where the plugs go in. For example, two TV’s at 500 watts each and a stereo amplifier at 400 watts is a total of 1400 watts. You’ll need a generator that is rated for at least that amount as it’s rated or running watts. You can forget “surge” wattage that you’ve heard about because TV’s and speaker amplifiers should not have that. Usually only appliances with electric motors have a surge requirement.
If you get a “2000 watt” generator (as they call themselves) they are actually around 1600 running watts. This should be enough to run the items you mentioned as well as be useful at other times as well.
I’m assuming that you want to power these items aside from a home power outage. If you wanted to replace power in your home, you will probably want at least 3000 watts to 5000 watts or more for general usefulness to power more items at the same time.
Good luck,
Ray
I am looking at purchasing a 8000 watt generator for my home. I would need it to power the heat pump and refrigerator and aome lights. Will this be big enough?
Thanks
Hi Steve,
Here is my best answer. First, is the 8000 watts the running watts or the surge watts? You will want to make any determinations based on your running watts.
A refrigerator will typically need 2000 watts supplied by the generator including the surge watt requirements. Lights will take very little, depending on their wattage and how many you plan to power. The question is in the capacity of your heat pump. You’ll need to find that out. I know very little about heat pump requirements other than that they can be as large as 10,000 watts. You will be able to find out if you can check the plate near the serial number. Otherwise contact the manufacturer with your model number.
Add up all the watts of anything that you want the generator to power. Keep in mind that you can alternate the things you turn on to keep the total below the running capacity of your generator. Hope this helps.
Ray
i would like to buy a generator to run our camping fridge, how many watts would i need.. perhaps also to run lights, maybe kettle occasionally or fry pan
Hi Paula,
There are a few factors to consider. After reading this article, you know that you need to determine how many amps each of your devices require. Lights take very little. Is your refrigerator in a motor home? A camper? If it requires 5-6 amps, then you’ll need a generator that can supply 1000 watts or so. Remember, refrigerators require surge watts as they cycle. You can disconnect your fridge while you run other cooking appliances (for a short time and keeping the door closed), which might take that many watts as well. If you don’t want the hassle, get yourself 3000 watts if your budget will allow, or a 2000 watt inverter if noise is a factor.
Ray.
Hello Elmo,
More important than the cost of the generator is the capability of the generator in Volts and Watts.
There are some things that you need to know about your chop saw. How many “amps” does it require?
I’m going to guess that it is 15Amps at 120 volts. If so, then it won’t need the extra 240 Volt capability of more expensive model generators.
You can get a generator with 3500 surge watts and you should be just fine. You’ll probably spend less than $500 for that.
If your requirements are more power, then remember the formula:
Watts = Volts x Amps
That is, it your tool is 15 amps and your generator provides 120 volts, then 15 x 120 = 1800 watts. You need to buy a generator that provides that many watts. But add more watts up to 3000 to cover the surge requirements of your saw. Good luck.
Ray
Hi, above you say:
“So you know your appliance is 1600 watts. Divide that by 120 (Volts) and that gives your your Amps equal to 10. Sorry for the math lesson, but here at the GeneratorGrader we want to make sure that what you should know is available to you.”
Actually, 1600/120 = 13.33. Sorry to give YOU the math lesson. 😉 I know, I know, you had talked about 1200 watts just above that and I’m sure that’s what you meant to say. Seriously, thanks for the good info!
thanks john.
I need to run a fridge, tv , 10 lights and an electric heater. What size 3500 or 5500 watts?
Hi Russell,
The answer will depend on a few things. First the requirements of the appliances that you plan to power. For example, Your lights are determined by what wattage they are. Are they all 60 watt? 100 watt? Then your requirements for just the lights (assuming that they are all on at the same time) is between 600 and 1000 watts. Your TV probably needs around 500 watts. The heater will have a wattage requirement. Find that out and add that. If it has a fan, it may require more as would any appliance that has a starting motor in it. So your fridge definitely has a cycling compressor in it. Guess 1500-1800 watts if you plan to keep it running continuously.
So if you run everything at the SAME time, 3500 watts from your generator won’t be enough. If you schedule what is running at the same time you may be able to. Be safe, get the 5500. They are a bit louder, but not that much more expensive. Hope that helps.
Ray
Ray my wife wants to run the central AC I don’t mind shutting other breakers down but what surge am I to expect I am leaning towards a 12k and a 13k unit between 9k and 10k running watts.
Hi Tom,
You can take a look at this site:
http://www.kylesconverter.com/power/tons-of-air-conditioning-to-watts
I am not affiliated with this site, but you can use it as a guide.
You will first want to know how many tons for your central AC unit.
A two ton unit should be fine with a 12Kw generator. You may be at its limit if you have a 3 ton AC.
Good Luck
Ray
Hello, I have a small concession business that I am trying to start. Collectivly all my major machines add to 6500 watt requirement. What size generator will I need? Thank You. Jacbern
Jac,
If you were going to run all machines at the SAME time, you’ll need around 8-10K watts. Assuming some of your machines have motors or something that will require occasional surge watts. Smaller and you will be limited to what you can run at the same time. Make a list accordingly of your machines and when they’ll be running, and you might be able to save some on a smaller unit. Good luck.
Ray
hey m keyur,i am working on automobile water pump that power need 10Kw (13-15 Hp).
so which size of generator use? m working for wind operated kit.
I’m sorry Keyur. This answer is beyond my knowledge. Maybe one of our readers can help. Good luck.
Ray
Hello, if I need to run a medium sized deep freezer for about 10 hours, what size generator will I need to keep it running?
Hi Melissa,
Not knowing your amp requirements for you particular freezer, this is only a guess.
1000 – 1500 watts would probably suffice.
Check the information plate and see how many amps your freezer requires.
Multiply that by 120volts and that will give you the watts required.
Then add another 50% or so for surge watts. Especially if you plan to open and close the freezer often during this 10 hours.
Remember though, a freezer can keep its contents frozen for several hours with no power with the door closed.
So it will depend on the size of your freezer and why you need 10 hours of power, whether you need a generator at all.
Let me know if you need more information. There are alot of assumptions in my answer.
Ray
Guys if I need to power a steamer that is 1500 Watts..will a generator that is 1800 starting Watts and 1400 rated big enough to handle this?
Hi Ramon,
You will be better to get a larger unit. You may have trouble with it bogging down or shutting off. With a larger unit you will have a more versatile generator that can be used for other things that you may not be thinking of right now, but will be glad when you do. Good luck.
Ray
I’m considering a small portable microwave to take camping in my van & would then need a small portable generator if no electric service is available. Looking at microwaves that are 700w or 900w. What else must I know to be able to determine the generator requirement I’d also want to run a fan also, but not when the microwave is in use.
Thanks in advance for any assistance
Hi Sylvia,
You have important information in that your microwave is up to 900watts. This is the minimum number of watts that the appliance needs to operate. Please remember that certain appliances (those with motors) require more watts than their running watts when they start. The same will apply to your fan that you want to run. So figure that you’ll need a 1000 watt generator with 1200 surge watts.
The second thing you’ll want to consider is the noise, if you plan to use it camping. An inverter generator is the choice here if noise is an issue. They are a bit more expensive though.
Make sure that you operate your generator well away from your van. The Carbon Monoxide emitted can be deadly.
Be safe and have fun.
Ray
Hi, I’m writing a story, my scenario is I need a generator(poss an inverter type)to power a table top freezer (LEC5005W) 146kWH 32lt capacity, it has a ten hour power fail and will be disconnected from power to save on fuel, a couple of low wattage lights will be connected, also phone charge and may be some small kindle type tablet to entertain a youngster. Would a 1000 output be suitable or something larger, thinking my character will have the small freezer already up to running order before being plugged in initially. Thanks Jan
Remember a freezer is very efficient in keeping things frozen, when the door remains closed.
Should you open it, keep this to a minimum and your contents should remain frozen for several hours.
Over a 10 hour period, you will have to run a generator a couple of times to bring the internal temperature back to it’s prescribed temperature.
A 1000 watt generator will may not have enough output when the freezer needs it’s “surge” when starting.
If it’s just a story, use a larger 2000 watt generator.
Ray
Many thanks, it’s to be used in a converted horse box so a small one would be ideal, yes it’s just a story but I’d like it to be believable, Jan x
Hi Ray, I have a frigoglass chiller fv 400,368litres for my shop but my spg 3000 gen doesn’t seem to make it work. What kind of generator will I need for the chiller.
Tracy,
I assume that the chiller works and that the generator work. Simple assumption but important.
I’m not familiar with your chiller, but your shouldn’t need a certain “type” of generator, just enough output.
Check the amp requirement of your chiller and use the formula watts = volts times amps.
If Amps is 10 and your generator puts out 120 volts, then you would need 1200 watts from your generator to “run” the chiller.
Add another 50% for the cycling requirements and your 3000 watt generator should be enough.
Your frigoglass chiller probably needs more power.
Ray
Hi there, I am not sure if this is even possible, but I am wanting to cool a 10x20x8 ft pop up garage tent. First, I was wondering if this could be done with an 8000BTU portable air conditioning unit. Second, what size generator would i need to power this and would it be relatively quiet? Thanks. Let me know if I can provide any further information.
Hi Bill,
I’m assuming that the garage tent is fully enclosed? Are you going to have your AC in the tent, drawing air from outside?
It seems that this would not be well insulated and the cool will dissipate easily. That aside:
Find out how many Amps your unit needs. 10? If so you’ll need at least a 2000watt. But AC’s can fluctuate so the more power you can get the better.
You mention how quiet. The larger the unit, the noisier it will run. Consider a quieter inverter generator but it will cost more.
It should go without saying that the generator will be run away from the tent, right? The farther away, the less noise, but the farther away the more expensive cord you’ll need. Good luck.
Ray
Pls I need a generator that can carry my fridge and sump pump, though I won’t be putting them on at the same time, thanks
Hi Lydia,
If you only want to run these two items, but not at the same time you shouldn’t need a large generator. You’ll need to determine how many amps your items require. This will determine how much power you need to “run” them. However both of these require what is called “surge” watts as their motors start up. Take the higher number of amps required between the two. Multiply this by the amount of volts your generator will produce (probably 120). This will give you the MINIMUM amount of watts to run your appliance. Double this number to cover the surge and get a generator that can supply this amount of watts. Hope this helps.
Ray
What size generator do I need? I am attempting to DJ with 2 Alto 800watt peak power Speakers (400 continuous) with a small Wego 3 Pioneer DJ controller and Apple Laptop. Will a 2000watt Generator/Inverter be enough?
Hi Jeff,
Without knowing the amp requirements of all you want to do, it is difficult to know if this will be enough. Make sure, that even with an inverter generator, to protect your laptop when operating from this generator with the other things running at the same time.
Ray
Pls, can 1.8kva generator power a 24 inch LED tv,a mini home theatre, ceiling fan, standing fan and a table height fridge?
you’ll need to add up your amp draw for all of these items and if you plan to run them all at the SAME time, see if you have enough running watts by the formula watts equals amps times volts. So if you have a 120volt generator, multiply with total amps, say 20 amps, then you need 2400 watts just to run them. With their surge requirements you’ll need about 50% more. By this example, 1800 watts will not be enough. Hope this helps.
Ray
So, I have a small air compressor. The manual doesn’t say much. 120V, 60 hertz, 10 amps. Now I’m
Ordering a Honda EU1000i that has a max output of 8.5 amps at 1000 watts. Will this run the compressor?
Hi Brian,
That might be a bit undersized. Your 1000watt Honda probably runs at 800watts.
If your item runs at 10amps, you need 1200 watts just to run it, not counting the surge watts that it will require on startup.
You’d be better off with the 2000 watt Honda although it will cost a bit more.
Ray
I need to purchase a portable generator as opposed to a heavier standard. I need to run a 5000 btu A/C for my camper and that’s it. Do you think a 2200 start up 1700 run watts portable generator will do the trick?
John, it sounds like you should have enough if your unit needs 5 Amps or so. Check with your A/C maker to make sure.
Ray
Ray,
I have a 1500 Watt, Lion Energy Fuel-Less generator. I am thinking about an induction cooking plate. It is labeled as 1500 watt. Can the generator handle it or do I need to purchase something else?
I understand that I would be maxing out the generator, but I have 3 solar panels at this time. Want to use it for camping or survival.
Hi Sharon,
You don’t want to rely on running your energy providing device expecting it’s full output. It may fluctuate below what you expect. If it is survival you’re worried about, don’t leave it to chance or without testing fully before you need it.
Ray
Ray,
Can I damage the generator by trying the 1500 Watt cook stove or could it possibly damage the cook stove? How would I know that it is OK?
It is an induction plate. Spoke with the company and asked them to consider a slightly lower Wattage and they seemed interested. Time will tell.
Hi Sharon,
If the generator bogs down or shuts off due to too much load, it is not good for the generator repeatedly. As far as you induction plate, I can’t see how trying to operate at less than its requirement may damage it. I suggest looking at its manual or contacting the maker again. As a rule of thumb I always recommend a larger generator capacity that you expect to need. No one ever said, “I wish I had less power”.
Ray
Hello…
I have 1500 watts mitsubishi generator. Can it handle a deep freezer 400 watts and a light bulb 20 watts. Seeing you table, a deep freezer 400 watts needs 400 surges watts as well. What is the correct size watts from a generator i need to buy?
Thank you.
The table are estimates only. But from what you tell me 1500 watts should be enough to run your 400 watt freezer and a light bulb, even with the surge requirement of the freezer. Remember, the freezer does not need to be run continuously in an emergency. With the door closed it acts like an ice chest, keeping things cold. You can use your generator for other purposes periodically. But you have to be diligent in your timing.
Ray
Will a 1500/1800 regular generator run a 5000 BTU A/C and handle the start up. 4 amps I believe
This is the lower range that “could” work. It is recommended to go with a 2000watt generator or larger.
If you already have the generator see if it will operate under working conditions. If not, get a larger generator, the extra watts won’t cost much more.
Ray
There certain times during the year that I need to power my sump pump during power outages, not many times but enough to create a lot of concern. I have a Zoeller pump which operates at 9.6 amps (1152 watts) with a surge start up of 25.9 amps (3108 watts). I am looking for an inverter generator that would provide the power needed to run my sump when needed but would also provide power for other recreational activities (tailgating, camping, computing, TV, etc) and be easily portable. Using the 80% rule for power usage it looks like I would need a generator with a running output of 1500 watts minimum and 4000 watts max power. Am I in the ball park with those numbers?
Ideally a generator like the Honda EU2000i/EU2000ic hooked up in parallel or the comparable Yamaha package would meet my portability needs. The Honda in parallel provides 3200 watts (26.6 amps) running and 4000 watts (33.4 amps). This seems to meet my sump power requirements, but I’m not sure if the parallel configuration is capable of providing the power. Any thoughts would be greatly appreciated.
Thanks
You’ve put a lot of thought into this. Sounds like you ran the numbers right. Yes there is a slight loss of power when you run tandem, but it you have excess, you should be ok. Good idea for the tandem where you can use only one for your lighter needs. Good luck. That’s a bit of an expense but you’ll get proven reliability.
Ray
Omg this is so confusing why can’t they make it more simple? For instance i want to run the most items but not the whole house. So a refrigerator, a 14000 portable air conditioner, and a tv . Now let’s make it simple and have a regular size refrigerator a 46 inch tv and the portable ac. What’s the biggest one I need to run them all together?
Simple answer. 5000 watt model should take care of these all at the same time.
If I have a 1200 running watt generator, can I run a 7000-8000BTU portable air conditioner?
Hi Veronica,
Your unit may be a bit underpowered for this size A/C. Primarily because an A/C has to use extra power when it surges or cycles on and off. You would probably be at or very near the limit due to this uncertain requirement which can be hard to determine. It would be a shame to expect it to work and when it comes time, it doesn’t or shuts off.
Ray
Hi Ray, I will be buying a generator and a mini split ac/heater unit 12k btu’s in the near futureto put in my truck. The ac unit says it consumes at 120V 11.9 amps, that’s 1428 watts. I’ve been told that to keep the ac running I would need a generator that has a running wattage of 3X thst of the ac, now i don’t think that’s right especially by what I’ve been reading above. When the compressor kicks in it needs around 1.5 additional watts from its normal running wattage, that would mean I would need an additional 2142 watts more while running making it a total of 3570 running watts for the ac to stay running. Let me know if this is right or not, I was planning on buying the 4k/3.5k surge watts champion generator, but with this in mind i think that will not be enough. I also plan on hooking up while I’m on my 10 hr break my small refrigerator which consumes maybe like 300 or 400 watts and a 700 watt microwave. What size generator would i need for this? Thank you in advance for your feedback.
Those who recommend that much surge wattage are generalists who “know” that more power will be used that the minimum mentioned due to powering more items such as your wish to power your refrigerator and microwave. Your 4000w surge will probably take care of your AC needs, but you will never regret buying more watts than you think you’ll need. A generator is a several year investment, and who of us can see our needs years into the future. Good luck.
Ray
Hi have just brought a2000w pure sine wave generator will it have enough power to run the hair straighteners
Hi Martin,
Whether your generator has enough power depends on the “hair straighteners” that you are referring to. If they are simply a flat iron, then possibly so. As you know blow dryers can use a lot of power. A 1600 watt blow dryer may not work when you turn it on due to extra surge watts needed.
Ray
I have a machine which is rated like 1500 w 2 hp 240 v…
To run that machine what capacity generator i need??
Please guide me
Your machine with a motor requires an amount of surge watts which can vary depending on what your machine is. The most logical way to go in my thinking with this information is to take into consideration that it also requires 240V. That will determine in part the power output of your generator. You might consider a 4000 – 5000 watt model with 240V capability. Make sure that you consider your outlets on your generator and your machine. Hope that helps.
Ray
Hi Ray
I am setting up an ice cream van in an RV and will be using a separate freezer when operating, (120 volt)
What size of generator would you recommend?
Thanks
Hi Howard,
To run just a freezer, it shouldn’t take that large of a generator. You’ll need to know the amp draw of your freezer. Then multiply that number by the volts to get the amount of watts you’ll need to run it. The double that number for surge requirements and you should be OK.
For example 10 amps time 120 volts equals 1200 watts. Double that and you get 2400 watts as your requirement.
Remember, get as many watts as you can afford. You’ll find a use for them someday. Consider an inverter generator if noise will be a factor.
Good luck,
Ray
Thanks for your detailed response.
Could you explain what this is and how they work?
Consider an inverter generator if noise will be a factor.
Howard
If you plan to use the generator in close proximity, inverter generators run more quiet than standard generators. This is mostly because inverter generators can “power down” if not in full use, whereas standard generators always run constant. You’ll notice that both however will increase in noise when more power is asked of it. Inverter generators are also enclosed in a housing which dampens the sound.
Ray
why will a 2000watts inverter not carry pumping machine 1.5hp but 2000watts gas generator does, afterall same rating
both should work if one or the other does.
Hi there I’m trying to figure out what kind of generator I should buy. I am in an electric wheelchair that has a 24 volt battery charger that I hook up to my chair to charge it every day. I would also like to run a refrigerator intermittently in case of power outage but also I have a small deep freezer as well. I was thinking an 8000 watt generator is what I probably need. I’m trying to figure out which is the best. Also I live in an apartment I do have a porch that during a power outage I can put the generator on and run it but then do I have to buy something like an extension cord that will come into my house to be able to plug the refrigerator and freezer in? Thanks for any help you can give me
Hi Patrick,
Thank you for reaching out. If I just take into account the uses that you mention, i have a suggestion for you.
For your refrigerator and freezer, you can probably get by with a 3000 to 4000 watts generator.
Remember you don’t always have to have them running. They can be unplugged periodically.
When you plug in your battery charger in to the generator, the freezer can be unplugged for example.
Also a factor for you is noise and proximity to your living area.
A standard 8000 watt generator is LOUD. It could disturb you or your neighbors. This is another reason to get a smaller unit.
You also might consider an inverter generator which is more quiet, and less heavy.
Consider that an inverter generator is more expensive per equal wattage. This is another reason to downsize your generator wattage to the 3000 range.
All of these should work:
8000W standard generator (more than you need regarding power and expense)
4000W standard generator (enough power and less expensive)
3000W inverter generator (enough power and less noise, but expensive)
Finally, you mention running the generator from a porch with cords.
Yes, but make sure that the generator fumes are well away from your living area.
Outdoors in a well ventilated area is best. Never in a garage.
This will determine the length of cord required. These can be pricey as well.
Good Luck and stay safe,
Ray
Please, i’d like to knw what generator power i’ll need to run a split A/C unit of 1hp, 9000btu/h. Thanks
get 5000Watts which should be more than enough. Unless you’re asking for the least you can get away with, then you’ll want to look into the variable amp draw of your A/C unit.
Ray
Hello im trying to figure out which generator i would need for my project. Im wanting to run a small window unit, mini fridge and microwave, and Tv. As well as charge electronic devices. In other words im going to be living in a converted rv for a while. Will a 3000 watt inverted generator r do this for days at a time?
Hi Ty,
Remember you will not be running each of these mentioned at the same time. You can figure that when you use your microwave, you can turn off your TV or unplug your mini fridge (just remember to plug it back in). The A/C (is that what you’re calling “small window unit”?) may run on 3000 watts depending on the Amps required. So the short answer is probably yes. But you’ll want to investigate further before you make the investment, because it’s not a small investment.
Ray
I have a smart meter Texas account and am able to see “actual” KW usage in my home for previous days (not the current day), months, etc.. I can sort my electricity usage by monthly, daily, and in 15 min. intervals.
My question is:- If my peak running watt usage in KW for a 15 min. time frame is about 1.8 KW. Do I just multiple this number by 4 to get my usage for a KW/h (e.g. 1.8 KW x 4 is 7.2 KW/H ?
The reason I’m asking is because I’m trying to size a portable generator and I want to ensure I have one that will run this load easily (e.g. about half the rated load).
So here is my thinking. Do I buy a generator that rated for 12,000 watts with a 1/2 load running watts of about 6500 watts? or will I need a bigger or smaller generator?
I just get confused with the “ratings posted by generator labels.” Is the listed ratting of 6500 running watts for a single moment in time or per hour?
Hi Michael.
Yes the ratings are for the generator output at any given time.
12,000 watts seems like more than you need for that amount of usage.
Also, during emergency situations, one would rarely use as much power as during non-emergencies as you would normally cut back.
Add up the total usage that you expect to use the generator for and double and triple check this need.
You may find that you can get away with a smaller choice generator.
But you are wise to not expect to tax your generator to full load.
Double check with a electrician before you make your final call.
Ray
Hi,
I can’t seem to get a consistent answer on my needs for a whole house generator. I plan on building appx 2400 sq ft home. I’ll have natural gas for stove, water heater.
I’ve looked at my current electric bills for the home we live in now which is appx the same size. At the most per 12 months of electric use came down to 1800 kw per month which averages out to be 2.34 kw for 32 days. I also went out and looked at my breaker box and added up the total amps for 455.
I’m so darn confused. Any time I speak to someone they only add more confusion about what is needed. So my question is this: all things being equal is there a way to figure my needs? I’ve figured different ways and have come out from 12,000 to a 24,000 unit. That’s a huge difference. HELP! Thanks
Hi Carla, yes it can be confusing.
First question for you, are you planning to live off the grid with the generator being your sole source of electricity?
Or are you planning for when there is a power emergency and you are without power for a length of time?
If the answer is living in a cabin in the woods with no source of electricity, then I don’t feel that I can help you.
But if you need temporary power, then there are some basic considerations.
You’ve done your homework well.
Your breaker box in your new home will be sufficient to run your home.
But in a power emergency, you don’t run everything the same way you would during good times.
For example if you had 50 light bulbs, they aren’t all on at the same time as your TV, stereo, A/C, microwave, refrigerator, etc.
So you don’t have to consider all 50 light bulbs.
Go through your home and look at all the necessities that COULD or SHOULD be on at the same time.
Refrigerator, freezer, sump pump, whatever. Most power needs in your home are not continuous.
If each light bulb was 100 watts, if they were all on at the same time, you would need alot of power.
But use them one or two at a time and your needs are much less.
You could turn off your TV when you want to use your microwave.
Make sense?
So list your power needs as “must haves” and then your “nice to have” and then your “don’t need”
Add up their power requirements with what is comfortable for you and get a ballpark answer.
Your estimate of 12000 watts is probably enough.
Ray
I have a 1.5hp compressor and i am looking to buy a Gentrax GT4000 GENERATOR.
It is 1700w/max – 1400w/rate. Would this generator do the job.
It may be a bit on the small side, Rob. Especially with the startup requirements of the compressor. If you haven’t purchased the generator yet, get a larger one. Not that much more to get 3000W.
Ray
Wow!! When you’re not dancing, you’re giving such great information.LOL
I read everything and have been educated and entertained. Now if I can just remember the formula volts x amps / watts = what?
Thank you. Shelly
Thank you for the kind words Shelly.
Ray
I need a quiet generator for 40″ smart TV and a ps3 game system need assistance on what to buy and at a reasonable price. And easy storage for my truck. I drive 18 wheelers
Hi William,
As far as quiet, most inverters don’t vary much in noise. Cost though, now there’s a difference. Check out the Yamaha for the higher end and the Earthquake on a lower end. Both reviewed on this site. But your TV and game system don’t need that much power to run. Are you planning to use the generator in your 10 wheeler while on the road? Meaning you’ll set up the generator some distance from your cab and let it run?
You might consider a solar generator which will store enough power to run your tv and gaming system when you use it. AND it will be silent operation.
Hope this helps,
Ray
Ray, you are one of a kind! A boon to people who is a novice on portable generators, like me.
Now following your formula, I have a 25 cubic ft of refrigerator, with a wattage of 826.85, and a compact freezer of 194.35 watts for a total of 1021 watts, would an inverter generator with 2000 watts max output, should be plenty enough, that I can also run a PC, and a radio maybe alternately?
I saw an inventer generator that’s also portable costing as much as half the cost of Honda and Yamaha for only a little bit over $500. It’s brand name is Wen . Have you heard about it? What do you think, since I will only be using it for emergency back up, that may happen maybe every 3 or 5 yrs, or not at all.
Kudos to you for your knowledgeable and helpful advice. More power to you!
Leo Degamo
Hi Eligio,
Yes, 2000 watts is enough for your example. And YES you can find less expensive brands with near equal consumer satisfaction. Yes WEN is a good company. You might also look into Champion (you’ll find a review on this site). An emergency generator is good to have, but we hope you’ll never need it for an emergency. The are however VERY handy to have around even in a non-emergency situation. Just don’t let your friends know you have one. They’ll be borrowing it all the time.
Ray
Hi Ray,
I need to power 3 X 12,000 BTU split units (air conditioners)
1 refrigerator and 1 deep freezer, with some lights and 1 television.
I am planning to buy 13 KVA generator that will give me 25 amps.
Will this be enough?
Thanks
That’s a good size unit Alvin. Should be enough. It will be rare when you are running EVERYTHING at the same time. But still you may find you have a bit left over. The AC units won’t all surge at the same time.
Ray
hi Ray
I have 1 fridge orient 2 tv “14” inch 1 pc with 17 inch lcd.1 hp 4100 laserjet printer 3 fans on the roof 6 sever and 1 water pump 1 hp how many watt generator are required
sms
Hi SMS,
It depends on how many amps your list will draw. I also depends if all the items that you mention will be run at the same time.
Your fridge will probably draw the most if it is a normal size. Look on the plate on the back to see how many amps it needs to run. Next is your water pump. You can always unplug your fridge when you run your pump if not needed all the time. For your computer, you might want to consider an inverter generator to keep your electronics safe. Are your fans on the roof, standard ceiling fans? Do you need to run them all at the same time?
I’m sorry I can’t be more help. The first thing you need to do is look for the power draw on each and add them up, and if you need to run them together.
Ray
Hi,
I just purchased a 4000 watt generator just to get me by for the winter for some lighting in my warehouse. I only hooked up three 75 watt clamp lights and they do not power on.
I can run my angle grinder and my jigsaw with no problem.
What would cause the lights to not work?
I tried a 40 watt bulb and that powered on but seemed to be pretty dim.
Thanks In Advance,
Josh
You might have a problem with the outlets. When running the power tools, is it from the same outlet?
Hello,
I have a commercial Kalvinator 18 ft Freezer and 18 ft Refrigerator, they both are 115 Volts with 5 Amps start up each for a total of 10 Amps. Run Amps is 2.3 each. I did the calculation of both for a total of 1200 watts. Would a 2000 watt inverter portable generator operate both appliances? Thanks
Your calculations seem correct Kevin. Just make sure of the running watts of your 2000 watt generator. The rating of 2000 is usually the surge watts.
Ray
I am configuring a food truck that has total wattage of all appliances 11.3Kw calculated at approx 95 amps. I am considering a 14.KW generator that only has 50A plug. My question is how do I get enough power to my truck with 1 50A plug/cable or am I missing something. Please help me to understand.
#ScratchingMyHead
Hi James, your requirements assume that you will be using ALL appliances at the same time. Typically 50Amp generators would be sufficient under most circumstances. Calculate your best estimation of what will always be running (including surge watts). Periodic usage of other appliances can make up the difference. Good luck.
Ray
I need to power 4 heating elements at 8 amps each. I cannot use a generator because it needs to be indoors. Is there a way to generate the power needed without using a gas generator? It is needed in a hotel room situation.
Hi Nick,
Do you need the power continuously or periodically. You might consider a battery bank that you can keep charged through solar? It’s an expensive option.
Ray
Hurricane season is approaching. During One we were without power for 10 days. We have a special generator plug hooked up to our electrical panel. We’d like to run the downstairs a/C unit, some lights, the refrigerator, and occasionally the oven or stove. What size generator should we buy?
Hi Deb,
Remember, when determining what size generator to get for emergencies:
1. You don’t run everything at the same time.
2. You’ll be happier with more power than less.
That said, The A/C if around 12,000 BTU’s (standard window type) will require about 1,200 watts. Your refrigerator about the same (when you consider surge watts). Your oven (size dependent) may take as many as the others.
Remember you can unplug the refrigerator when you use the stove, and it will remain cool for hours. Just remember to plug it in again.
So a 4000 o 5000 watt generator could be enough.
If you have a built in plug, determine what type of plug it is and it will partially tell you what size generator will best work with it. 20Amp, 30Amp, 50Amp.
Also note that a built in plug will probably already be designed to take the power to certain areas of the home.
If you plan to use that plug, check with someone who can read your electrical box and test before you rely on it.
Good luck,
Get ready, but don’t need it.
Ray
Thanks!!!
I have a 2000 watt generac that I want to know what size portable room a.c. I can run off of it. Very important I travel with pets and they need air in the back of the van!!
Hi Michelle, a standard 12,000 BTU air conditioner that will cool a 400-500 sq. ft. room takes about 1,000 to 1,2000 watts. To cool the back of a van is much smaller than 400 sq. ft. Please remember to keep the generator far away from any enclosed space. Good luck.
Ray
I need a generator to power a cotton candy machine 1130 watts some string lights around my tent and maybe a fan. What do you recomend?
You won’t need a very large one. Say 2000 minimum. If noise will be an issue, consider one of the popular inverters.
Sounds like you’re having a carnival.
Ray
I have no power and I’m wanting to run my fridge, 8,000 btu a/c, 42″tv and dvr. I’m looking at a 2400 watt generator and was wondering if I should get it or if it would be a waste of money
Hi Michael,
You might need a bit more watts, especially if all of the items you mentioned will be run at the same time.
Ray
I want to power a ‘Waffle Dogger’ at fund raising events (electric waffle machine type of unit) that is rated at 1660 watts and 13.8 amps. Not much else will be powered- maybe a string of patio lights from time to time. What size generator would you suggest? As quiet as possible is also am important consideration for us.
Thanks!
MIke.
Hi Mike,
Sounds like you want an inverter generator (for your quiet requirement) and a minimum of a 3000 watt model. Inverters cost more, especially in that wattage. You can save several hundred dollars with a standard gas generator at the same power, but you’ll have to put up with the louder running.
Ray
Good day may i ask what would be the best generator for me… I need to power up 3 refrigerators 1 window aircon, 7 stand fans and about 20 bulbs, tv and a desk top computer,lastly celphone chargers at around 10 units. Tia
Hi Tia,
for the items that you mentioned, you’ll need to know how many amps for the refrigerators and AC. That’s a lot of stand fans! The other items don’t require much. Guessing by normal size items, and a 8000BTU AC, you’ll probably need 6000 watts or so. Get the numbers of amps down, and figure for surge requirements, then check with a generator supplier to confirm. Good luck.
Ray
Hi. I’ve a setup of a computer centre, with 15 Dell desktops, 2 ceiling fans and two energy saver LED bulbs. What kind/power of generator I’ld need ?
please email me at mrafatkhan at hotmail dot com
I’ld be very very thankful.
Make sure that you get a generator that delivers pure sine wave power to protect your computers. Also protect them with a top line protector.
Start with looking only at inverter generators then add up the requirements of your computers. Your ceiling fans will probably draw the most per unit, but consider running those on a standard generator if you can get both. You might save money by not buying the extra watts in an inverter just to power items that don’t need the clean power.
Ray
We are looking to purchase a portable generator for power outages due to hurricanes. We would like it to take care of our refrigerator, small freezer, tv, microwave, hot water heater, and some lights. What size would we need?
Hi Karen,
You are not alone in wanting to power the bare essentials in an emergency. To be sure, add up the Amp draw of all of the items that you want to power simultaneously to determine how many watts you’ll need. Watts = Amps x Volts. With a standard 110 volt requirement, if you are drawing 20 amps, you need just over 2000 watts. People can usually power the items that you mentioned easily with a 3500 watt generator. Hope this helps.
Ray
i have a generac xg8000e generator 8000running and 10000 surge. will it handle a fridg and a freezer, a well pump and a small 110 window unit ac? we have a huracorn on it’s way
Hi Kelsey,
You have a good, powerful generator. You should have plenty to take care of what you listed. Please make sure that is in good operating condition now. Make sure that you have enough fuel to last how long you expect to need it. Be safe and operate the unit in a well ventilated area away from any living area. Good luck to you.
Ray
i am starting a mobile kitchen, it has two upright freezers, two deep fryers, warming light, small window A/C unit, burger grill, soda dispenser. it is wired for 220. what sized generator should i look at purchasing to operator all these items at one time
Hi J.
There is no easy answer to your question. You say you want to operate them all at the same time. You’ll need to add up the amps of all of your items, AND add the surge watts required for your freezers, fryers, AC. Then determine how many watts it will require. You also say that you are wired for 220. That is good and will allow you to consider the generators with that capability to produce at 220.
It sounds like a 7500 unit should be enough, but without exact numbers from your appliances, this is just a guess. It could be less. Good luck
Ray
Hello Ray !! Thank you for your time with this question.
I have a 5000 btu wall unit a/c that would not run on a 2000 watt honda generator. the formulas above suggest that it would, with ample excees…. not sure why but it kept popping the a/c’s breaker built in the wall plug. However the a/c would run on a 5000 watt generator.
2 questions please….
1) Is the formula off a bit?
2) if I want to upgrade my a/c to this item https://www.compactappliance.com/edgestar-extreme-cool-14000-btu-dual-hose-portable-air-conditioner/AP14001HS.html
what size genny would you recommend? Know that its darn near impossible for us to return a genny once we put gas in and run it…even if its to test on this portable a/c.
Thanks a bunch!!
Anthony
Hi Anthony,
The AC you are looking to buy looks good. I’m surprised that a 2000 Honda won’t work with your 5000BTU AC. Is the AC the ONLY thing plugged into the generator at the time? It goes to show that although it should, you just never know. Does it pop the AC breaker only on surge? I suppose your 5000BTU AC has an amp draw of 6 or so? Your Honda is an inverter? If so, it runs at minimal output during normal AC operation and although it shouldn’t happen, if the surge is not adequately covered in time by the generator, could that be it? That should pop the Honda’s breaker. I just don’t know. You should ask a certified electrician.
Here is the spec sheet on the AC you are considering:
https://www.compactappliance.com/edgestar-extreme-cool-14000-btu-dual-hose-portable-air-conditioner/AP14001HS.html#specificationsRow
At 10-11 amps it shouldn’t take too large a generator. Your 5000 watt model should work. I wish I could be more help. Good luck.
Ray
Thanks. Here’s what happens. once the a/c kicks in, the genny bogs down and the a/c cord, that has a fuse built in, pops, requiring me to reset it. this happens within 1 second. Yes the honda is the inverter style. The a/c runs on “fan” mode, but once I switch it to “cold”, that’s when everything pops. The A/c box says its 5000 btu with 8 amps. Im guessing that is NOT the surge. the genny itself is not popping the breaker, just the line cord of the a/c. I Was actually thinking it might be a fault cord and was going to cut/splice the cord breaker out to see if that bypass would work. i figured worse case, the genny would pop for safety…
Hi Anthony,
When the cord is plugged into a standard wall outlet, does the cord fuse pop when the cold is turned on or just when the power is supplied by the generator? Cold turns on the compressor which draws more power. Sounds like this extra power draw is tripping the fuse. Once you reset the cord fuse, does it operate fine? The fuse on the cord is to protect your AC. If it senses too much power it trips. If you bypass the fuse, you risk damaging the AC. Since your AC even at cold surge would not draw more than the capacity of your generator, I don’t think your generator fuse will trip.
Thinking of buying Duromax XP 12000E wondering if this is a good quality generator. Also I have 2900 Sq. Home in Florida main items of power consumption are 5 1/2
Ton Central A/C system, refrigerator, 65 inch flat panel tv washer & Dryer and pool. Is this generator going to have enough watts to take care of all that I have listed.
Hi John, You have a large AC. And what would you be running for your pool?
The other items require relatively little power.
If you get a 12000 watt generator, wire it to your home via transfer switch and run only the things you need at the time.
Consult with an electrician to wire your needs accordingly. Good luck.
And yes Duromax makes good generators.
For a house of yours size, if you need a lot of power, consider a whole house, built in unit. Pricey though.
Ray
How many window units 12,000 btu’s would i be able to run off of a 15 kw generator?
Hi Joe,
These are just ballpark numbers since conversions are not exact. It depends on your amp draw, and efficiency of your AC units. Maybe 1500 – 2000 watts per AC. Assuming you are wired into a transfer switch. I don’t think they make a cord that splits into the number of AC’s you could power with 15,000 watts.
We had to borrow a 7000 DeWalt generator. I plugged in a 12,000 btu window unit, energy efficient flat screen, 2 fans & our cell phones. Can we plug anything else in if I get the special cord for the 240v side? Like refrigerator? I will live out of a cooler if needed because I cannot give up the AC for to health issues, but it would be nice to have it. As of right now we are only plugged in to the regular 120v side because this is our first time using a generator.
Hi Janene,
Your generator probably has 4 standard three prong outlets? You are running 4 extension cords? Typically if you switch to the 240 option, the small plugs won’t be on.
Remember your generator can safely generate about 6000 running watts at the same time, so the four outlets will be sharing the watts.
You are probably only using 4000 of the available watts by what you mention so you could add the refrigerator to the mix.
If you get the cord that can utilize the 240V side it could make life easier for you, but you don’t need to make the expense.
One outlet can run the AC. One outlet can run the refrigerator. Your refrigerator can be unplugged for a couple of hours and just leave the doors closed, if you want to use the same plug for cell phone charging. For charging cell phones, use a surge protector strip to prevent possible damage to your charger. Same for your TV.
An extension cord connected to a surge protected power strip would be more economical.
Please make sure that you are using good extension cords. 14 gauge and rated for at least 20 amps, and make sure that the cords don’t get hot during use.
Good luck and stay safe,
Ray
i have a 5 ton a/c 16seer and am looking at buying a briggs and straton 20kw whole home generator. do you think this will be enough to turn the a/c on? i actually have 2 central a/c units, the other is 4 ton. i figure if it can kick on the 5 ton, i can alternate them and cool the house. on top of the a/c i’d like to power the fridge and tv if possible. thanks
Hi Mike,
I appreciate that you’d like my opinion or estimate. The truth is, I would not want to influence your decision on such a major expense. I recommend that you contact the maker of the generator that you are considering. Also ask the maker of your AC. That in conjunction with a certified electrician. This is a decision that will require homework on your part. You’ll have piece of mind and so will I. Good Luck,
Ray
Looking to buy a standby house generator. Would be running our central AC, 5 1/2 ton, 2 house fridges with freezers, microwave, hot water heater, multiple lights and ceiling fans, charging electronics, 50 inch tv, 35 inch tv and possibly washer and dryer. Not sure what size to get.
Hi Peter, with the exception of the AC (saw your note about the AC being actually 3.5 ton), the other items could get by with a portable 7500W unit. With concerted effort in not running everything at the same time, you might get away with less. However if you are considering a standby generator, most are made to run AC’s of that size. 20kw units are common. That said, do not rely on my opinion with an investment of this size. Contact the maker of the standby unit AND a certified electrician to make sure you are wired correctly for your whole house. Good luck and be safe.
Ray
Hi,
Looking at a 2000W generator surge capacity, 1400W running capacity
2.6 HP engine
4-stroke OHV, low oil shutdown
3600 RPM
Frequency: 120V/60Hz
How many hours of runtime do you think I can get if I plug in a
8000 BTU AC window unit?
Thanks
Hi Priscilla,
If you are sure that your generator is sufficient to run an 8000 BTU AC (it may be near its capacity), then it will depend on the size of your gas tank.
typically you can get several hours run time on 1 gallon of gas in the smaller generators. With frequent filling of a gas generator, please be safe. Good luck.
Ray
I am going to build a tiny home approx. 336 sq. ft. The stove, oven and water heater will be on propane. Lighting will be kerosene. Can I economically run a full size refrigerator/freezer and tv on a generator.
Hi Patrick,
You will need a 2000 Watt generator at minimum to run your refrigerator/freezer and TV. Make sure you know how many Amps you need and match to the power supply to be sure. You’d have to refill the generator tank every half day or so. That could get expensive over time, not to mention tedious. You can run on propane or natural gas also. Is this a permanent thing? Running a continuous item like a refrigerator in a tiny home? Tough call.
Ray
Yes Permanent. I was planning on getting the Dura Max beast 12,000 watt and running on a large permanent propane tank.
Propane tank will also be used to run stove and oven and water heater.
Hi Patrick,
To run a generator continuously in a permanent situation is possible, but have you considered a small solar alternative?
How much square footage of solar panels would it take to run a refrigerator/freezer, tv, and well water pump?
Hi Patrick,
These articles might help. I don’t know much about solar.
Consider the cost and the savings on gas. Good luck.
http://www.backyardnature.net/n/x/solar.htm
http://www.sunfrost.com/blog/off-grid-refrigeration-solar-electric-vs-propane/
?, we are in the process of purchasing a travel trailer. On occasion we will be dry camping with no electric hook up. I use a cpap device and my wife likes a small fan in the bedroom. I’m planning on purchasing a small generator to power those two items for over night stops. Will a 2000 watt propane generator be enough power?
Hi Ken,
First the disclaimer, “PLEASE CHECK WITH YOUR PHYSICIAN TO CONFIRM YOUR HEALTH AND SAFETY FOR YOUR IDEA AND MY OPINION.”
That said, a CPAP for those reading this, is a Continuous Positive Air Pressure device for those who may have respiratory issues such as sleep apnea. I don’t know the unit that you are using, however most of these devices use very few Amps and a 2000Watt generator should be sufficient (including your wife’s fan). Any sort of sensitive medical equipment should be be aware of the uneven power that standard generators provide. The fluctuations could damage your equipment. Usually, those in this situation should consider an inverter generator for it’s even sine wave power distribution. At the very least consider using an UPS to arrest any unintended power surge.
Alternatively, you might consider a battery inverter which is essentially a big battery that can provide the AC you need to run your equipment. Then simply recharge the battery daily. Good luck and stay safe. Enjoy your travels.
Ray
Kudos, Mr.Ray bolger, I must commend the sincere, friendly and objective manner which you answer these questions. God bless you. Typing from Nigeria. Hoping someday I’ll be in the US.
Going dry/primitive camping. Totaly clueless regarding generators. Only need to inflate a queen size air mattress once per camping event, run a couple of table lamps during the dark hours, and charge our electronics (cell phones, lap tops, etc) when needed.
How big a generator will I need?
Pls advice.
Red
Hi Rose,
For the items that you mention will need a small generator if any at all.
You can inflate the mattress with a small pump that can run from your DC plug in your vehicle.
Table lamps can be run on batteries for a LONG time and you can carry extra batteries.
You can use small rechargeable power packs that can be used to charge cell phones.
All that said, you can get away with a 1000watt generator, however standard generators may damage your cell phones.
That’s why people get inverter generators when they want to charge sensitive electronics.
But inverter generators are expensive ($500 or more for that size)
That’s why, I suggest you go the battery route for short camping trips.
Save money. Less noise.
Hope this helps,
Ray
Looking to buy a generator in case of an emergency to run my refrigerator, furnace, deep freezer , some lights, tv , computer, in my house.
If I oversized it a bit what size generator could handle this load.
Hi Dave,
5000 watts should be enough. Remember all the keys. Add up the Amp requirements for ALL items that you would run at the SAME time and add the surge watts for the appliances that cycle on like the fridge and freezer and furnace. Consider protecting your computer by using adequate surge protector, or use an inverter generator. To get an inverter with that many watts though you’d be paying a LOT. For the money you can buy a separate battery inverter that you can run your computer off of. You are smart to oversize it. You’ll probably be glad you did someday.
Ray
I need to size a generator to service a low pressure e-one 1 HP 240 volt motor. Nothing more is required. Can I go to a 3800 watt?
Hi Joe,
Not all lot 4000 watt generators have 240volt output option. If yours does than you should be ok. Make sure you confirm that Amp draw of your motor is low enough to make sure.
Ray
Looking at your “running” “surge” chart. I need some clarification. Why are some surge numbers zero? Seems that they should be equal or greater than the running watts.
Hi Steve,
I’m sorry for the confusion. When the surge watts are listed as zero, that means that the item doesn’t have any surge requirement. When a number is listed in the surge column, this is a high estimate of how many surge watts are required for certain items. The running watts plus the surge watts should be together in determining what you will need. That said, a refrigerator running at 1200 watts would rarely need the additional surge watts of 1800. It’s more like 800. But to be safe, err on the high side, and have a generator that can handle up to 3000 watts. Hope this helps. Thanks for the question. If you are unsure about the table then others will be too.
Ray
We purchased a Stanley 8000W generator and had an electrician install a 30 amp panel to plug into. The generator, I’m told, can handle 8000W running and surges to 10000W. The main power users are 220V well pump, 2 refrigerators and the fan for a propane furnace. Since we have a propane stove and didn’t have the water heater or clothes dryer on the panel, other than that, just some lights in one part of the house, a computer, TV etc.
I can’t recall what exactly was turned on, but the first time we used it was during the day so not a lot of lights would have been on. It had run for less than an hour when we noticed the power failing and went out to find that the generator was smoking because the alternator was on fire. Now we have to get the generator repaired, but the main concern is that this doesn’t happen again. If we accidentally overloaded the generator, why wouldn’t a breaker shut it down? Did the electrician install the wrong panel? Why would a brand new generator catch fire?
A local generator repair shop has told us this shouldn’t have happened. The distributor and service center are basically telling us it’s our fault, although they’re willing to give us a discount on a replacement alternator. Just trying to understand it so we can get the generator repaired and not have it happen again. Can you help?
Thanks
Ruth
Hi Ruth,
I’m so sorry that you had so much trouble, especially since it sounds like you did everything right.
At first glance, I agree that it shouldn’t have happened. Overloading should have turned the generator off.
The panel should have breakers as well.
Fires can be caused by fuel leaks and sometimes oil leaks.
I wish I could be more help. If you do simply replace the alternator, PLEASE have it checked out by the repair shop to insure that it is working properly.
In a way you were fortunate that you or your property were unharmed.
If it was a new unit under warranty, I wouldn’t let the manufacturer/distributor off easily until the case was explored fully.
Ray
Hi, im looking for a Generator to used for a refrigerator, 2 light 60 watts each a tv and a fan how much watts i need
Hi Daisy,
The most power hungry item you mentioned is your refrigerator. If it is a standard size, it probably needs 2000 watts to cover the surge requirement. Check the Amp draw just in case it’s a larger one. So you can probably get a 3000 watt generator to suffice your needs.
Ray
I am looking for a generator to used a mid size refrigerator, 3 fans, and a 60 watt 💡 light
Hi Dennis,
First, the light will require very little. Next, the fans take more power when they are first turned on (called surge watts), then they settle in to a lower running watt requirement. Your refrigerator similarly has a surge watt requirement each time the compressor turns on. The key is how many amps the refrigerator and fans require. Check those. Use the general formula Amps x Volts = Watts. So an 8 Amp refrigerator times 120 volts (standard wall outlet) equals 960 watts. Roughly double that to cover surge requirements, and to run your refrigerator you’d need approximately a 2000 watt generator. Do the same for your fans. And if you run them ALL at the same time, add them up, then you’d need that many watts.
With all that, you can generally expect to need 3000 to 4000 watts. Champion makes popular models in that range. Durostar and Duromax (same co.) make less expensive models with good reviews. Good luck
Ray
Ola, I’m in the process of having an Interlock installed on my main 200 amp panel. I have a Briggs & Stratton 7500 running/9300 surge
and want to know if I could run my water well, which the well guy said needed 7000 starting & 6000 running it’s a 3 horse pump, long enough to fill the water heater and then turn the well off and then turn the water heater on for a couple of hrs to get the water hot to take showers ? Then I plan on turning those off and going back to running the other things.
Do I make since?
Thanks
Hi EJ,
Your idea sounds right. Is this in an emergency or ongoing?
Ray
Thanks for the response. This would be only for emergencies. We live in a very rural area and lost power for 5 days when Irma came through and my wife said “not again!” so we’re getting ready for next time. I don’t care what people think about global warming, but the way things look, we’re in for more & stronger storms. Now all I have to worry about is gas.
Hi EJ,
You are smart to be prepared. Let’s hope for the best, but it’s best to be prepared. Make sure that you test the well pump. That is the most power hungry. You have a lot of watts to work with when you’re not using it for the water. If gas is an issue, remember that you don’t have to run your refrigerator all the time as long as you keep the doors closed. That way you won’t have to run the generator all night. A generator of that size uses a lot of gas even when you’re using very little of its capacity. You might consider battery inverters that you can charge during the day and use for night lights or other low power needs. That way you won’t be running the generator all the time, but still have some comforts.
Ray
Ray
Hello I’d like to purchase a generator for running a standard household 12 cup mr coffee maker. What size portable generator would i need? Thanks for the help in advance.
Hi Ty,
Take a look on the specs of the unit. It will tell you how many amps it requires. Multiply by 120volts and it will give you watts. Then you’ll need a generator that can provide that many watts.
That’s a big expense to run a coffee maker. I assume you have other uses in mind for your generator? If indeed all you want is a cup of coffee, perhaps you can consider an alternate coffee source, say a portable propane burner and an old fashioned drip method with boiled water?
Good luck.
Ray
Thanks for the info. Still lost. We want a generator that will run side by side refrigerator/ freezer, fan, TV and maybe a small window air unit. Born and raised in Florida just want the peace of mind. Don’t need to run the whole home.
Hi Stephanie,
All this can be confusing, I know. Think of it this way…
You have a bucket full of power to run whatever electrical equipment you want to run.
To run each item you need to empty the bucket of that much power.
Remember that if you are not running something at the time, then that power remains in the bucket to use for other things.
For example if you don’t run your Air Conditioner at night, then that power is available for something else.
So the total power that you want in a generator is assuming ALL things running at the same time.
Note that certain items like refrigerators and air conditioners don’t use power consistently.
A little motor starts up when a refrigerator has to keep the temperature at its setting. This EXTRA power required to start this motor is called surge watts.
Your Air Conditioner has a similar requirement. Maybe you’ve heard the noise from your appliances change when the motor kicks on.
So you must buy extra power from the bucket of power for this purpose. So if your refrigerator requires 800 watts to run, it might need a total of 2000 watts periodically.
Confused yet?
A small window AC probably uses the same amount of power as a refrigerator. There are something called Amps that an electrical device uses. A combination of these Amps, Watts, and the volts from your outlets is related to each other.
So without getting more complicated, if you only powered the items one at a time, you could probably get away with a 2000 watt generator. But if you expect that all will be running at the same time, you should consider a 4000 to 5000 watt generator.
Hope this helps. Good luck and stay safe.
Ray
We want to be able to run at one fridge, a light, power up our phones, t.v. and a blue ray dvd player. My Pastor let us use his last year for 5 days, I remember 7500, it had 4 prongs to run energy into the house and we ran two fridges , the phones, t.v. and the dvd player. We don’t want to power up our mobile home out of fears of leaks and catching fire, but want to make sure we can power up at one and the rest on this list. What would be our best surge/wattage to buy?
Hello Shannon,
Of the items you mentioned, the fridge would take up the most power and surge. The “7500” that you used before was probably the surge watts with about 6000 running watts. This was more than enough. If you want to go smaller, you can probably get away with a 5000 watt unit. The fridge (if standard household size) will use about half of that and you’ll have plenty left over for the rest of your smaller items. To be sure check to see that your fridge does not require more than 10 amps to run.
You might be OK with a 4000 surge watt unit if you needed to go smaller. Remember you don’t run everything at once and you only need the full power when everything is running. You can unplug your fridge for a few hours to use that power somewhere else (just remember to plug it back in). You might also consider batteries to run your lights. They don’t need much power. Remember to use a surge protector to plug your TV and other electronics into. Generator power is sometimes uneven and can damage sensitive electronics. Good luck.
Ray
should I purchase a solar ac generator in the us or costa rica
I’m sorry Robert, I am unable to make that recommendation for you. Good luck in your research.
Ray
Hey, I have a generater an the running wat is 4000, an 2800wat. Can it run my fridge, 3 TV, 11 lights
Hello Shanado,
I don’t understand the combination of “4000, an 2800wat” that you mention, but a standard refrigerator will need about 2000 watts to run continuously. If you Don’t run all the TV’s and lights at the same time, you might be alright. Have someone add up all the amps that you’ll use at once and see if you have enough watts. Hope this helps.
Ray
My RV has a 7100 BTU air conditioner. Can I run that with a Honda 2200 EU generator?
Hi Joe,
Under standard conditions, you would probably be taxing your generator to its limits. Also consider if you would plug into your RV’s electrical plug or directly to your AC. There could be less power available to your AC if so, even it you do not have anything plugged in to your RV’s other outlets.
Good luck,
Ray
Hi. I appreciate your help. I was wondering how large a generator to buy for my house during power outages. I have a deep well pump (250 feet deep), two refrigerators, lights, power for a spark to my Ranai tankless hot water heater, and power for my pellet stove (2 auger motors and 2 blowers). would a 7500 Watt dual fuel Champion generator handle my situation?
Hi John,
Remember you don’t run everything at the same time. Even the refrigerators you can unplug periodically (just remember to plug them back in). Usually that size is a minimum amount to power the necessities during a power outage. I am unfamiliar with the requirements for your pump and your stove. Will you be running cords? Or hooking it up to your panel? If you can, add up the Amp requirements of everything that you want to run (get help with this if you need).
Make a list and make and mix and match what you can run at the same time based on their power requirements. Be sure to remember the extra power requirements for items with a motor that will periodically surge upon startup.
Congratulations on your decision to be proactive on possible power outages. Champion makes good generators. Dual fuel gives you options also.
Good luck and be safe,
Ray
I have an air mattress with a built-in pump that I want to take camping. I hate asking for co-campers to borrow their air compressors to plug this in so I thought buying a light weight inverter generator would be great. But I can’t figure out what size to purchase. The air mattress built in pump says this 110-120V 60Hz and 0.7A
Help me please? I don’t know what size to buy and this is the only thing it will be used for, 6-8 times a year.
Thank you in advance!
Hi Shelly,
You probably don’t need a generator at all if only for this purpose. You can get a battery inverter that can convert your car battery power (DC) to the AC power needed to run your mattress pump. It will be a LOT cheaper.
Many inflatable mattresses have an alternate manual inflation option if the pump doesn’t work. If it does, you can buy an inexpensive battery operated air pump that will save you money.
Of course you will find many uses for a generator should you choose to purchase one. If you do, you can get away with the smallest generator made since you only need 0.7Amps to run your mattress inflator pump.
Good luck,
Ray
Im looking to find the right generator to be able to use for a small freezer, fridge, a window unit, tv and a few lights. Trying to figure out what size to get. thank you
Hi Patrick,
You want to figure out the amp draw (including surge requirements) for all of the items mentioned. The size of your window unit and fridge/freezer are the main draws. Standard 8000 BTU window A/C’s require about 2000 – 3000 watts WHEN RUNNING. Remember you don’t have this running all the time. The same amount would be required to run most refrigerators. So if you run everything at the same time, you can probably get by with 5000 watts.
These are just ESTIMATES. Get help if you need in figuring out the Amp draws.
Good luck,
Ray
What size generator do I need to run a dialysis machine for 8 1/2 hours at night. I need a back up for when the power goes off here. Thank you for any help.
Hi Susie,
I refrain from making any recommendations on generators that have to do with running sensitive medical equipment. The general principles are the same, but I would feel better if you got your information from the maker of your medical equipment, or from your medical professional. Thank you for having the confidence to ask me, a stranger for such important information. I am flattered.
Best wishes,
Ray
Hi. I live in Florida and am preparing for Hurricane season :). We found a generator that will allow us to run off Gasoline OR Propane. It’s a 3500 with 4000 surge watts (Model GEN4000DF-SS). It’s currently under $300
Ideally, I would want it to power the refrigerator and a small window AC unit (probably 5000 BTU since the room is only around 120 square feet). Would the generator I found be sufficient? I understand the refrigerator and window AC unit will require the additional surge watts, but was thinking that even when they surge, the generator might just have enough to handle it on the off chance they both require additional wattage at the same time.
Hi Howard,
You are smart to be prepared. At 5000BTU for your AC and a standard size refrigerator, you could have enough.
If it does shut down due to heavy use of the AC, remember you can unplug your refrigerator for a period and alternate as necessary.
Be safe.
Ray
Hi. I’m trying to get ready for an emergency, and I would like some confirmation on my thoughts. I’m trying to power a freezer, refrigerator, and 1-2 (probably 1) 14,000 BTU portable air conditioner, plus a few lights and probably some USB ports. I am looking to buy a 3150/2800 inverter generator. I’m thinking the generator will be sufficient, but may be pushing the top of it’s range. It wouldn’t be too much more to buy another (I have found a fantastic price) and I’m thinking that it would be better to parallel two because I think that would be running at around 30% (???) and probably use less gas at the lower % load. Do you think one would meet the need and I’m just trying to overkill the issue, or am I right in thinking that 2 will be necessary and better overall price and better overall usage?
Thanks in advance for your help.
P. S. Last year in the hurricane we were without power for 5 days. So I’d probably be preparing for no power for 5-10 days.
Hi Kevin,
Your idea to run parallel is a good one if you can afford it. You will be putting a near full load on your 3150/2800 with your AC alone. You may have difficulty running the other items that you mentioned. Turning your refrigerator on and off periodically as some do can get tedious over a long period. By running tandem units you will be putting less stress on your units. You can run just one at night when your AC needs are less. Good luck and stay safe.
Ray
Hi. So I recently did a basic bedroom conversion in my parents garage. Its starting to get hot so i went and bought an Haier 8000 btu window ac unit. Yesterday was my first time running it and sure enough when my parents were running their (one and only) window ac unit at the same time I ran mine.. the power went out. I have no idea what I am doing but I thought maybe if we bought a generator I could run my ac off of that. Is that even possible? And what size/type of generator would work best for that? I live in SoCal so I would need to run this AC throughout the summer. Thanks for your help!
Hi Erika,
Yes you could get at generator around 3000W and it would run your AC. But before you do, your home probably has the capacity to run both at the same time. You will have to ask an electrician to set up your electrical panel to provide a power source to your garage AC. Good luck.
Ray
I want to buy a generator to power a small chest freezer (5cu ft) in case of emergency. I have the option of buying either a 2000 watt or a 4000 watt both duel fuel generator ($20 price difference). Which one would be more fuel efficient If I am running the same load. I really only need the 2000 watt but if it will use the same amount of fuel to run the freezer I might go with the 4000 watt just in case for future use. However if the 4000 watt uses a lot more fuel to run the freezer it might be better just to stick with the smaller since it will handle the load I am looking for.
The 2000 watt has a 1.2 gallon fuel tank-Gasoline run time 9 hours at 50 percent load, LP run time 12 hours at 50 percent load.
The 4000 watt lists Engine Run time at a 50 percent load: 10 hours with a full 3.6 gallon gas tank, or 12 hours with a full 20 lb. propane tank
Hope this makes sense. Thanks
Hi Kramer,
The larger model will use more fuel even at idle (no load).
However in a power outage, it is always a good idea to have a larger generator for other uses.
Keep in mind that a small chest freezer uses very few amps, AND you don’t have to have continuous power running to it to keep things frozen.
Your choice. The fuel cost difference should be minimal if you only need power for the freezer.
Good luck and stay safe.
Ray
So, if I’m reading everything correctly, I have a 5.0 cubic feet deep freezer. The manual says that it runs at a current of 1.2 amps. So 1.2 amps x 120 volts = 144 watts. So, if I get a 1000W generator, I should have no problem for a good amount of time?
Hi Bruce,
You should have no problem with the specifications that you mentioned.
Freezers do not have to be continuously running as they stay cold even when not running.
That’s convenient in case you have to periodically use the generator for other uses.
But 800 watts will limit your other uses.
Good luck,
Ray
What size generator would be good for a coffee maker that is 120V and 1370 watts AND and espresso maker that would be 110V and 1600W? There would be a time where both would be used at the same time…
Hi Mark,
items with heating elements usually don’t have to worry about surge watts, and they require their full power periodically. Assuming a no fail scenario where both require full power at the same time, you can add up the Watts and require 3000 watts. Does your espresso maker have a motor unit it it? If so you would need to add more power for surge requirements.
Ray
what size generator do I need for a 19 ft trailer with a 8000 BTU air conditioner, we will only need this if we camp dry.
Hi Barbara,
There are a couple of things that can change a concrete answer. “NORMALLY” an 8000BTU A/C will consume about 1000 to 1500 watts.
The efficiency of your unit will come into play. However 8000BTU is a 19ft trailer seems that you shouldn’t be running the unit at full power. Normally 8000BTUs can cool a 300+ sq.ft. room. Another consideration is the amp draw. Check that and if you are around the standard 7-8 amps you should be OK.
That said, you must consider the surge requirements of an A/C. This is when the unit’s compressor starts periodically. That could make your wattage requirement 2,500 watts, or the generator could shut down. If you get a larger than you need generator, you will eventually find other uses for it. Alternatively you could get a smaller A/C. You will also want to consider the noise factor of a standard generator vs an inverter type. The inverters are quieter for camping, but cost more for equal power. Finally, consider the plug requirement of your trailer. Some generators come with RV type plugs. Don’t let that stop you though since there are just about any adapter you can buy. Good luck and be safe.
Ray
Hi Ray, Great site. Thank you! I am going to purchase a generator to run my refrigerator and a 1500 Watt portable heater for Winter and a large fan in the Summer. (Emergencies only) based on what I’ve ready I think I will need at least a 3700 watt generator. Am I correct? (I’m basing my guesstimate on Refrigerator 2200 watts, Heater 1500 Watts)
Hi Grant,
Your estimates sound correct. You will find that a unit of that size will come in handy in so many areas even when you are not in an emergency situation. Good choice. My motto, get the more power if you can afford it.
Stay safe and good luck.
Ray
Thank you so much. I started doing some research into brands (I’ll go through your site portal so you’ll get credit) Given what I’m using it for, what do you think the smallest generator I could go with is? (Surge power and running power)?
Hi Grant,
To be safe, with a little room at the higher end, see if you can get close to 3000 running watts. Thanks for the support.
Good luck,
Ray
Hi Ray,
I’m weighing the pros and cons of purchasing a large portable generator vice a mid-size whole-home standby generator. My home has approximately 2700 finished square feet. I have gas heat, oven, water heater and fireplace. AC unit is a 2-ton Goodman. Of course I have a sump pump, refrigerator, tv, garage door opener, electric dryer, etc. Considering either a 12kw Briggs and Stratton Fortress standby with load balancing powered by my natural gas connection, or a Champion 9200 portable with a transfer switch. Any advice?
Tks and really glad I found your site – very good information!
Jim
Hi James,
Your question is a common one and one that you must decide based on what you need.
The main benefit of a standby generator over a “large” portable is that it is pre-wired to your home, and will turn on automatically in the event of a power outage. It will turn off when power is restored. The natural gas connection is very convenient in a prolonged outage, eliminating the need to refill a gasoline engine. Although you could get a portable model to run on natural gas, but limits its portability. People often opt for this when they would be away from extended periods of time, or physically unable to initiate the portable generator/transfer switch manually.
If you don’t have a large household electrical need, say up to 20kW, you might be better of with the portable generator. And you can always choose between power needs in the home, keeping the essentials running. It sounds like you utilize a lot of gas energy. You may also find uses for your generator’s portability that you won’t get with a standby. Good luck and be safe.
Ray
I am looking for a portable inverter generator to power some things in a lengthy power outage: a 1500 Watt EdenPure heater, a couple lights and maybe a LED TV, which I think is around 500 watts. (You mention “lights” light “100 watt”, but ours are LED which are comparable to a 100 watt incandescent bulb only use 13 watts. We run 3 or 4 of them at a time.) In a long power outage we might hook up our refrig for a few hours.
What size should I be considering?
Hi AJ,
You are right about the 100 watt bulbs. LED bulbs use much less energy to provide the “lumens” comparable to larger wattage incandescent bulbs. So just use the watt designation on the LED bulbs you are using in your total usage calculations. In answer to what size generator you need, consider getting large enough to run your refrigerator full time along with your other necessities. You can always unplug your refrigerator when you need the power for other uses that might come up. From what you said, you might consider a 4000W unit. Good luck and stay safe.
Ray
hi ray just bought a genarac gp 3600 genny first one live in fla will it run normal size 1000 watt a/c window unit normal house fridge/frezzer 40 watt bulb and led 42 inch tv all at same time? ty very helpful site you have ty jim
Hi James,
Thank you for your questions. With what you said you want to run at the same time, it should be OK if you can get the 4500 surge watts. The AC and refrigerator will surge now and then. The most you would be using is when both surge at the same time. If you are like others people, you will like the available power, especially in an outage, and might add other power eaters to your unit. That’s normal. Think of the ways you can juggle your appliances in an emergency. You might not run the AC at night when you need more lighting and entertainment. You can disconnect your refrigerator for periods at a time and still keep your food safe. As always stay safe with the generator fumes and adequate cords.
Ray
ty sir virgin here with gennys I have 14 g cords 50ft is that ok thanks for the answers ray
Hi James,
With a 14 gauge cord, there is a limit of how many amps you can safely run though it, and the maximum length. If you look at the table on the article on this site on extension cords, the table says that you can use a 14G maximum length 50ft, and run 20 amps through it. There will be approximately 2000 watts available through that cord. You can plug it in to the standard three prong outlet on your generator which normally sends out only 20 amps. Check your manual. If so, you’re good to go. Remember that at the other end of the cord you can use up to 20 amps. Don’t put a split outlet adapter on the end and still expect to run both your AC and Refrigerator from that one cord.
Ray
surge watts on it is 4550 gpgenarac 3600 sorry ray
I lied its 4500 surge still ok ray?
Hi James,
Surge watts and running watts in general can vary from the stated watts on the unit. You can check it with a meter, but the difference you mentioned is small and could fluctuate even more than that difference. Testing your results would be needed regardless, but you 4500 t0 4550 is minor.
Ray
ok ray ty gonna due test run tommmorow on ac and reefer ill let you no how it goes ty for all your info
ran a hour all a/ok ty ray!
I wanted to know if it’s safe to plug two 25 foot 30 amp 10 gauge generator cords together to make 50 feet. Or possibly adding a third 10 foot cord to make 60 feet. Is it allowable to connect the cords together
Hi Jim,
What are the plug types of your cords? Single outlet each?
What outlet are you using as the initial connection to your generator?
Although not ideal, it is possible to connect cords as you mentioned. All 30 amp rated 10 gauge.
You may notice a slight decrease in amps at the business end by connecting cords.
Make sure that the connections are flush (tight).
Keep the connections clear of any obstructions and dry.
As usual, please do not rely on my comments solely. Ask a certified electrician to see what you your plans are exactly.
Be safe.
Ray
everything at once 2800 watts still have one socket to go on gen gp 3600 genarac runs smooth 7 hrs now on it no hiccups ty ray
How about powering a food pantry with about 4 large fridges and 3 freezers, plus a walk-in freezer. I have no clue how to go about doing that.
Hi Cassie,
It sounds like you need to power some sort of institutional facility? When something of that importance, I recommend that you contact a certified electrician for your options. It will be required to find out the amp draw of the total units, including a substantial surge if/when these units cycle on. It could require a large 10kW generator or larger. You may even consider a standby generator, depending on the importance and frequency of the need to power them.
Good Luck
Ray
Howdy, great site! It has helped me narrow down what I am looking for immensely, but it is also made me realize that while my needs are low in terms of power, my feature requirements limit my options.
I am looking to add this onto a small RV (a Cirrus 820 truck camper), primarily to run my AC or microwave while boondocking. The AC is a Coleman Mach 8, which I know will run on a Honda EU2000. I don’t need to run the microwave at the same time and plan to install a hard start kit to make it a little easier on whatever generator I get.
I will be building a box on the back bumper to keep it secure and out of the elements, and will permanently be attaching it to the propane plumbing and electrical wiring of the camper. Here are the features I am looking for:
Liquid Propane powered (could do a conversion)
Remote start (rules out recoil start models)
Quiet (under 60db)
Low vibration
Under 25″ x 15″ footprint
Can you help me limit down my options?
Thanks again, Chris
Hi Chris,
I see that you obviously want an inverter. As far at the footprint, you would need to visit the specs of the models that you are interested in. There are so many coming on the market that it is difficult to keep up with them from my end. Narrowing down often comes down to reviews.
Right, and I figured out that I can overhang the back bumper buy a few inches without a problem.
At this point I’d be happy if I could just find four or five options that satisfied the other features so that I can start reading reviews…
Hi. I am looking at purchasing a soft serve Ice cream maker. Looking at a choice of 2 at present. 1200 watt or 1800 watt. What size invertor generator/s would I need. I don’t know the surge tho. Cheers Donna
Hi Donna,
I love soft serve! If the generator will be the only source of power for your ice cream maker, you will want to know the surge requirement. You must keep your freezer operating smoothly without the generator shutting down during surge. I don’t know if the dispensing mechanism requires a motor or not, but if it does, it will have a surge requirement also. You can probably get by with a 3000W unit, but please get the figures. Don’t be disappointed.
Ray
hi
I am looking to be a little more prepared for storm season. looking for a generator that will power: Fridge/freezer, portable ac unit (yet to be purchased – 10-12k btu’s) and likely a box fan and a lamp. pretty straight forward.
would appreciate your input on size of generator. as you mentioned, rather a little too much than not enough…
thank you
Jim
Hi Jim,
It’s good to be prepared.
The minimums that people do for the refrigerator/freezer and a few creature comforts is 3000watts. When you add in an air coditioner, you might want to make it 5000 watts, ASSUMING they’re all running and cycling at the same time. As mentioned in other articles, you do not usually use all appliances at the same time. AND the refrigerator can be unplugged periodically and still remain cold.
Good luck and stay safe.
Ray
Hiya, im doing a conversion so everything starting from scratch and I’m really struggling on the understanding of what generator to get, I thought I had it sussed until I walked across my last researched item of 12kw! That threw me completely!
Ile explain roughly where I am if someone could please please help me
Rough** all electric appliances no gas
Fridge (continuous) – 1000 watts
TVs (daily) – 150 watts
CCTV (continuous) – 70 watts
Washing machine (once off here n there) – 2000watts
Iron (once if here n there) – 1000watts
Vacuum cleaner (daily). -500watts
Oven (few hours a day). -2000 watts
Hob (few hours a day). -1000watts
Hairdryer, laptop, phone charging ect -1200 watts
Lights (rough x10). -1000 watts
So I thought around 7500 generator if I was to run all at same time…
Then I came across electric water heater…. 12kw??… 12000watts??? Is that right? I don’t feel I need to get 20000 watt generator for this bus conversion. I know I’m not involving running time into it but I just don’t understand it. Can some one please help me or point me in the right direction please thank you so much 🙂
Sarah-jane,
Looks like you’ve done your homework and calculations pretty well. Remember you would probably NOT run all on your list at the same time.
Regarding your number for the electric water heater… that’s pretty high. Normally a 50 gallon running off of 240 volts would use about 4000-5000 watts. And that is to heat up the initial volume. Then it will maintain the temp through a thermostat and not draw that amount all the time. During your use, you can set the temperature to a lower setting also.
Look at your list again and determine if you would really use items and when. You can also unplug certain items (refrigerator) when the power is needed elsewhere temporarily like when heating the water or using the washing machine or oven.
Good luck and stay safe,
Ray
Hi Ray,
First off thanks for this fabulous informational website.
I will be looking to buy a generator to power up:
Fridge…115V 6.5 A = less then 800 full load
Coffee pot
TV 50 inch
2 portable fans
Computer
I have 14 and 16 G extention cords…most under 25 ft except I need 100 ft for the fridge. I have a 16G / 100ft for that
I have calculated that a 4000 W generator will be enough. Would you agree?
The next queston I would have is which type of generator would you advise, I’m a bit lost on that subject.
Thank you
Marty
Marty,
Your numbers seem OK. You might want to consider beefing up your cords to 12 Gauge.
Choosing a generator is up to you. An inverter will be more quiet, but more expensive. At least get protection against fluctuations in power if you plan to use your computer to protect it.
Reliability is important. Look for good reviews on that. Go with a name brand and don’t skimp on something as important for you or your family. Champion, Wen, Generac are good mid priced companies. You don’t want any surprises when you least expect them.
Ray
I would like to buy a generator that is pretty much quiet and a good price for my Italian ice cart as a backup. Which one do you recommend?
Hi Sandy.
Is an ice cart like an electric freezer? Or does it have a motorized dispenser? Either way, determine how many amps you need to operate it at full use. Then choose the generator accordingly. You need Quiet? Then you would consider an inverter generator. Then you could run it in close proximity to your cart (assuming good ventilation in the area of use). Otherwise if you could place the generator several feet away, the noise level might be OK with a standard generator and a long cord. Good luck.
Ray
Hi Ray,
I have an 8000 watt (10,000 watt max load) portable generator. Want to run various items in my house (using a transfer switch/twist lock linking generator to breaker box) BUT, that outlet/line is rated at 30 amps…. so am I only getting 3600 watts (120 volts x 30 amps) out of my 8000 watt generator? and if so, do I then plug in other extension cords to my generator to run other items?? very confused. Thank you!
Hi Richard,
Does your unit have the ability to switch from 120 volts to 240 volts? Generators of that size usually do. And if you switch your generator to the 240 volts, then your other plugs on the 120 volt size would not work to plug additional cords into.
Ray
This site is very helpful, at the start I didn’t know a volt from a watt now I am confident to talk with a salesman with enough knowledge to get what I need and blow his sales pitch away.
Great website!! Definitely answered some questions But still uncertain on the following.. I just purchased a 9400/8450 gas 7500/6750 propane duel fuel generator along with a 10 circuit (30amp) transfer switch.
Question is– My home service panel is located in the hallway of the home.. With the generator in a safe location in the backyard, the power cord between the generator and transfer switch will need to be 65-70ft, 20 ft of this length will be in LPVC Conduit running up the exterior wall and through the attic to the transfer switch.. I was looking at these 10/3 UF-B Wire Underground for a permanent install, or 10/3 SEOOW Portable Cord 600v
Do you feel this wire/cable is suitable in AWG for this install?
Open to any suggestions
Thanks a Million
Hi Greg,
Congratulations on considering safety prior to any electrical install. As you may know, I am not a professional electrician. I only share general knowledge. I recommend contacting a professional and not rely on what you may get from an internet source. I appreciate you trust in this site, but your success is our utmost goal.
Ray
I don’t have any questions for you to answer at this time.
I decided to reply letting you know how I really enjoyed reading everything you mentioned here and your comments too to your readers. Your writing style is so easy to understand and the information you provided is very informative and useful.
Thank you so much for the time and effort you invested here!
Hi, My family & I are going off grid @ xmas for a week. I’ve purchased a chest freezer rated voltage 220-240. What size generator would you recommend for this? I have no idea what I’m doing so hoping for your expert advise. Also do I need to buy any other gadgets for this to run 24hrs per day for 7 days. Appreciate any advise – Thanks
Hi Clare,
Is your freezer rated for 240volts? does it have a regular 3 prong plug or an plug with three or four larger blades? If the latter, the generator that you purchase must be a generator with 240volt ability. You’ll want to know the Amps for your freezer, although most don’t use that many that at 240v capable generator can’t handle. And remember, you don’t need to run a freezer plugged in 24 hours straight. The insulation can usually keep your food frozen even when not plugged in for short periods of time. A generator rated for 3000 to 5000 should be fine. If more than you need, you’ll be glad you have the extra power.
Make sure that the generator is running in a ventilated area away from any living quarters. That said, the main “accessory” that you need is a correctly matched extension cord at the proper length.
Hope this helps. Have fun and stay save.
Ray
Hello Ray, I have a new Predator 2000 inverter generator and would like to know if it will power my 781 Amp house refrigerator? More importantly, why does the owners manual say 600 max running watts when it says 1600 watts/ 2000 starting watts?
Hi Todd,
It seems that a 781 Amp refrigerator may need to be confirmed. That is a LOT of Amps.
Also the 600 max running watts may be a typo or misprint.
You can pick up an external meter to test the output.
Good luck. You may find that your unit may be just fine.
Ray
I am doing an outdoor event and will be renting a 5500W generator, is this enough to run 3 deep fryers.0ne is 1200W another dual is 1700W?
Hi Ana,
It sounds like that will be enough. Normally a fryer is only a heating appliance, meaning that it doesn’t have a motor which will require the additional surge watts. Please also consider the Amps required. One will need approximately 10 Amps, the other approximately 15 Amps. So if you are running them from a single cord, make sure that the cord is rated for 30 Amps.
Does the rental include the extension cord? Does the generator have 240V ability? If so, you could use that, but the cord for that is pricey, especially if it is not included in your rental. If you’re using the standard three prong outlets on the generator, use two cords of sufficient rating for the distance and Amp requirements. Plugging the fryers directly into the generator with the cords from the fryer will not be long enough to keep the generator fumes safely away from you.
Have fun and be safe.
Ray
Ray, i live in a leased house in norcal, if i just wanted to put a generator on the back patio n run extension cords in for my fridge, two lights, n my lap top computer n charger for my cell (about 5 hrs a day) how big or what size generator should i buy? i don’t need washer/ dryer or heat/ ac i can tough that out lol, but just save my food, have some light, use my laptop for work n charge my cell? thank you sir god bless you for your kind knowledge n help.
Hi Gregg,
I heard of the power shutoffs in California. I’m sorry if that is your situation.
Yes you can run a generator with cords for your fridge and you few other items.
A standard fridge can get by on 3000 watts. And remember the power doesn’t need to be continuously supplied to your fridge/freezer. It will stay cool/frozen with the doors shut for an hour at a time with no power, where you can use the available power for other temporary uses.
The issue is the number of Amps that your fridge/freezer needs. An appliance with a motor/compressor, need additional power when it cycles on, than it would need for normal running. This is called surge watts. In most cases, 3000 watts should cover this requirement for your fridge.
Also make sure that you use good extension cords for safety.
Make sure that the generator is in an area where the fumes do not get into your living area.
For charging your electronic equipment, it can be good to have an inverter generator that has a stable sine wave to protect your computer/phone. Without this make sure you have a good surge protector where you plug in. Or for a bit more, get yourself a UPS (uninterruptible power supply) device so that you can run your computer on this.
Good luck and stay safe.
Ray
I have a Briggs & Stratton 3500 portable home generator. I’m hooking it up to a transfer switch and storing it on my front patio about 12 feet from the residence. It measures 2 feet x 2 feet x 20 inches…I would like to store it in a waterproof storage shed. The shed height cannot exceed 3 feet(for security reasons).I would to keep the cost under $200. Can you steer me in the right direction?
Hi Rick,
I’m assuming that you want to run the unit in this “shed”? Or is it just to store the generator when not in use? You can get a water resistant cover for under $200, but a shed may be difficult to find for under $200. If a solid structure is required, you might consider building your own. If using wood, make as much space around your unit as possible. No heat source should be near any surface of the structure. If you need to have it enclosed, add a fan and vents, although open somewhat on the sides is preferable in case the fan goes out or the batteries for the fan die. Seal as best you can on the top (and sides) against water intrusion.
Good luck,
Ray
hi there,
i’m looking for a generator powerful enough to power a double-door chest freezer, a display cooler and a small air conditioner. i am clueless about the wattage needed for these appliances but i desperately need guidance to get something that take care of all my appliances. your guidance is greatly appreciated.
May I assume that you are looking for power to you appliances when the grid is down? And not continuously?
Take inventory of all the appliances that you may run at the same time.
Look at the Amp draw for each of those appliances and add them up.
If they run on standard household 120, then you can calculate the number of watts that you’ll need.
Also consider the surge watts needed when an appliance cycles on. (AC, refrigerator) You’ll need to almost double the watts from your simple Amp draw calculation.
For example, if your required Amp draw from your calculation is 20 Amps, then your need 20 times 120 = wattage (2400 watts).
Then add in your required surge requirement, and you’ll need around 5000 watts.
Again remember this is only an estimation and your amount will vary.
IF it is for a power outage, remember, your refrigerator, freezer and AC will not need to run simultaneously.
You can periodically cut the power and provide power as needed.
You may need many more Amps than the example. I don’t know how large your display cooler is.
That’s basically what you’ll do. Consult a local electrician for guidance.
Good luck and stay safe.
I just purchased a Whirlpool WRF535SWHZ04 refrir w/ bottomfreezer.Label in unit is as follows. 115V – 7.10 amp (470 W defrost/ 260W icemaker. Was looking at a Champion #100406 portable generator rated at 45450 start watt and 3550 run watt. A little confused on the formula for wattage on this. I also found a data page on this that had electrical details stated as 20 amps 115 volts.
Would this generator work for thisrefrig? And would it also work if Ihad a second unit. a freezer rated at 5 amp 115 volt.
Should one use surge protectors on appliances when hooked to generators?
Thanks for your informative site.
Hi L Wolf,
Thank you for your question. Yes the calculations can be confusing.
The wattage, amps and volts are related.
Your appliance needs 7+ amps to run. It will plug in to a standard household wall plug. It draws it’s required amps from the 120 volts supplied by the plug. The watts required to do this is approximately 840 watts.
watts = volts x amps
840 = 120 x 7
So on the surface, your proposed generator has plenty of power to do the job.
Now consider that appliances with motors (compressors) periodically “surge” as the motor is started and that requires more power than what would be needed to just “run” normally.
This surge can require of the generator as much as twice the watts. So now and then your generator would be required to supply up to 2000 watts. Again, your generator has sufficient power to do this.
As far as running something else with the fridge/freezer, it is just a matter of adding the similar requirements of the second appliance and see if you have enough power unused.
It sounds like you have a generator that can supply 20 amps. Your first appliance will need 7-8 amps. That means you have an additional 10-12 amps to use on something else.
Be sure to use correctly rated cords.
A surge protector can be used but is probably not necessary.
Good luck and stay safe.
Ray
Hello Ray! My problem is this – In case of a temporary power outage, I want to supply power to a sick room to provide some heat – either an electric blanket at 200 watts or a space heater at 1500 watts. I would like to have enough power to run these for 8-10 hours continuously just in case. What size generator will do this? and what type is best – gas, propane, etc? Are storage batteries an option? Cost is an issue, too. We rent our home. Your thoughts would be appreciated! Thank you!
Hi Tom,
For the description that you describe, you can get by with a 2000 Watt generator. Fuel is a personal preference for you and your situation. If cost is a factor, inverter generators are more expensive but run more quietly. An electric blanket can be run on batteries, but will need to be recharged in a power outage anyway. The least expensive is a standard generator. The easiest fuel for most is gasoline. If you plan to run it continuously, you’ll need to keep track of your refueling timetable. Run the generator a safe distance from your living area, outdoors, not in a garage or connected structure. Use rated extension cords. Stay safe and good luck.
Ray
Thank you Ray!
Ray – I was a bit too quick on the trigger. Another question – if I went with batteries, what type and how many would I need? How would I recharge them? I don’t expect long blackouts – I’d be surprised if we had any for as long as overnight, but I just want to sort of plan for what I think might be a worst case scenario for our area. Thanks again!
Hi Tom,
To power just the blanket with batteries, it may be more expensive than a small generator. Depending on how long you need to use the battery power, you may need a couple or more deep cycle batteries run in tandem. For example, a car battery can run a 60W light bulb for several hours, but you’ll be asking the batteries to power 200W. The batteries would drain then be useless. You would need to charge the batteries, either with solar (more expense), or a generator anyway, assuming there is no grid power. I am not educated enough in the formulas to tell you what size batteries and exactly how long you can power a 200W blanket without recharging. So if expense is an issue, the small generator would be the choice. I you can afford it, and have the ability to recharge them, batteries would run quiet, and you could store the power source indoors. Good Luck and stay safe.
Ray
Hello Ray,
What a wealth of knowledge as I deep dive into the world of generators.
I am purchasing a Soft Serve machine for a mobile food truck and am trying to figure out the best generator for us.
The unit specs are as follows:
120/60/1 Air @ 16 Amps….Nema Plug @5-20P
Refrigeration System @ One, 4300Btuh, R404a
Any advice would be much appreciated.
We are looking at inverters as noise is a big concern.
Thanks for your time
Hi Lindsay,
Inverter is a good idea if noise is a factor. I suppose the generator will be in close proximity to the use.
As you know inverters are pricey, especially when you go up in watts.
3000 Watts should be enough to handle your needs since there is are motors in your Soft Serve machine. Of course you will never regret having more power for multiple uses if you can afford it.
Have fun.
Ray
Good Afternoon.
I live in Barbados and I would like to purchase a generator to power a Deep Freeze WVL-420 WESTPOINT and a 2 door Fridge What size generator i should purchase?
Hi Yvonne,
Assuming that your freezer and Fridge are standard Amp draw, you should be able to power them on a 3000watt generator.
The standard recommendations apply. In a power outage, the appliances do not need to be operating continuously as long as you leave the doors closed. You may find other needs for your generator during these “off” times.
Of course you will want to confirm that your normal Amp draw is no more than 10 each, so that their periodic surge requirements (starting of their internal compressors) are met by the max surge rating of your generator.
Good luck and stay safe,
Ray
There are two types of RV amplifiers. The 30 amp camper is normally reserved for smaller RVs, with generator sizes ranging from 2800 to 3600 watts. The 50 amp RVs, on the other hand, are usually huge campers with power needs ranging from 4000W to 6000W.