Are you thinking about buying a 6,500 watt generator and wondering what it can power? Don’t worry, you’re not alone. Many people are interested in purchasing a generator for emergency backup power or recreational use, but aren’t sure which size is best for their needs.
I have great news for you! Our team here at Generatorist has helped over 600,000 people find the information they need about generators and we’re here to help you too.
This article will help you understand what appliances and devices you can run on a 6500 watt generator and how to determine your wattage requirements.
Here’s what you need to know: A 6500 watt generator typically provides either 54.2 amps at 120 volts or 27.1 amps at 240 volts. Some of the best options currently available on the market include the Ryobi 6500, WEN GN6000 or Generac GP6500.
THE KEY TAKEAWAY:
A 6500 watt generator can run all household appliances, power tools, and RV/camping appliances such as a window AC unit, fridge with a freezer, well pump, washing machine, coffee maker, microwave oven, dishwasher, pressure cooker, toaster, TV, vacuum cleaner, electric water heater, and a couple of electric tools such as a radial arm saw, bench grinder or hammer drill.
However, you cannot run all of these devices simultaneously, and you need to be aware of the power consumption of each appliance:
- Small window AC unit – 1,200 watts
- Fridge with a freezer – 700 watts
- Small well pump (1/2 HP) – 1,000 watts
- Washing machine – 1,150 watts
- Coffee maker – 1,000 watts
- Microwave oven – 1,000 watts
- Dishwasher – 1,500 watts
- Pressure Cooker – 700 watts
- Espresso machine – 1,300 watts
- Toaster – 850 watts
- Ceiling fan – 60 watts
- Vacuum Cleaner – 200 watts
- TV – 85 watts
- Sump pump (1/2 HP) – 1,050 watts
- Small heating system – 500 watts
- Laptop – 50 watts
- VCR / DVD Player – 100 watts
- Smaller electric appliances – 400 watts
- A couple of power tools – 800 watts
- Medium radiant heater – 1,800 watts
- Hammer drill – 1,000 watts
- Radial arm saw – 2,000 watts
- Bench grinder – 1,400 watts
- Electric water heater – 4,000 watts
- Window AC (10,000 BTU) – 1,200 watts
Our list of over 100+ products and their power needs will help you calculate the actual requirements for running multiple appliances simultaneously.
Also, you need to know whether your generator has the correct number and type of outlets as some higher wattage appliances such as AC units may need different outlets than some low-wattage appliances.
STARTING WATTS VS RUNNING WATTS
There are two main wattage output numbers characterizing the amount of power a generator can produce: Running watts and Starting watts.
Running watts – The term “running watts” refers to the amount of power that a generator can consistently produce over a prolonged period of time. This is often represented as a lower number on the specifications of the generator.
Starting watts – The second, larger number, refers to the surge (or starting) watts – the maximum power your machine can produce over a short period of time. This number is typically higher than the running watts and is represented as a larger number on the generator specifications.
It’s important to note that many appliances and tools require more power when starting up than when they are running. So, it’s crucial to consider both the running and starting watts when choosing a generator.
By a 6500 watt generator we refer to a machine that is able to produce 6500 running watts. Its starting watts will vary depending on the brand and model of each generator, but based on our experience the range is somewhere between 7000 – 7500 surge watts.
Keep in mind that you won’t be able to run your whole house on this machine simultaneously as this will require a lot more power than any 6500 watt generator provides.
If you are thinking about getting one, pick from Ryobi 6500, WEN GN6000 or Generac GP6500. No matter which of these generators you choose, you can rest assured that you’re getting a high-quality, reliable, and efficient machine that will provide you with years of reliable power.
If you need an energy backup for your whole house without any limitations, you may consider getting a stand-by unit instead of a portable one. Here is a great calculator from Generac that will help you decide.
Usually, these generators are much more expensive and need to be installed by a professional electrician.
Here are our tips for choosing the best generator for your household and specific tips for contractors as well, in case you are interested.
Determining your
If you want to learn what electronic appliances will a 6500 watt generator run, you need to get ready to do some math. Don’t worry, it will be a very simple process of adding up several numbers.
To determine what appliances you can run on this type of generator at the same time, you need to follow these steps:
- List all electronic appliances in your home you want to keep running in the case you are out of power (here is a great list full of appliances you might use)
- Write information from their name tags on required running and starting watts into a table (see examples below)
- Then you need to add up all the running watts required to operate your appliances
- The next step is to find the item with the highest additional starting watts
- Then add this number to your total running watts
- The final number represent the amount of starting watts your generator needs to provide
Here is an example of how to calculate the wattage requirements for a generator:
We have decided that in case of a weather-caused blackout, we would need only essentials such as a refrigerator with a freezer so our food will be safe, a lamp that will serve as an emergency light source, a small window AC unit to keep the temperature under control, a toaster, and a laptop.
Selected Appliances | Rated (Running) Watts | Additional Starting Watts |
---|---|---|
Toaster | 850 W | 0 W |
Refrigerator / Freezer | 700 W | 2,200 W |
Laptop | 50 W | 0 W |
Lamp (2 Lightbulbs) | 150 W | 0 W |
Window AC (10,000 BTU) | 1,200 W | 3,600 W |
TOTAL | 2,950 W | |
6,550 W |
As you can see in our example above, if we add up all running watts of our appliances we get the number 2,950 – so we are well within the 6500 running watts limit (850 + 700 + 50 + 150 + 1,200 = 2,950).
However, we would need a generator that is capable of producing at least 6,550 surge (starting) watts to power all these appliances (2,950 + 3,600 = 6,550).
Just keep in mind that some electric appliances in your home may not have running watts provided on their data tags. If this is the case, you can estimate the running watts required thanks to the following formula:
Watts (W or kW) = Volts (V) x Amps (A)
Amps (A) = Watts (W or kW) / Volts (V)
So, as long as you have required Volts and Amps, you can easily convert them into an estimate of required running watts. Maybe you remember that this equation represents Ohm’s law from High School physics.
Luckily, there is a device called “appliance load tester” that you can get to determine how many watts each your appliance takes. You can easily get one from Amazon and avoid all that physic´s equation.
If you need general estimates of wattage consumption by the most common electronic appliances, then take a look at our tables at the end of this guide. Just take these numbers as rough estimates.
You need to check each appliance / power tool in your home individually to see the precise wattage requirements.
How much can a 6500 watt generator run? Feel free to check out the wattage requirements of the most popular household appliances, RV & camping appliances or power tools for contractors here on Generatorist.
6500 Watt Generators
Because we get lots of questions with regards to 6500 watt generators, we have decided to add this FAQ section where you can look for helpful information.
If you have any questions that are not answered here, feel free to contact us or leave your question in the comments section available at the end of this article.
In general, this type of machine will run almost all household appliances, power tools, RV & camping appliances, including:
- Small window AC unit – 1,200 watts
- Fridge with a freezer – 700 watts
- Small well pump (1/2 HP) – 1,000 watts
- Washing machine – 1,150 watts
- Coffee maker – 1,000 watts
- Microwave oven – 1,000 watts
- Dishwasher – 1,500 watts
- Pressure Cooker – 700 watts
- Espresso machine – 1,300 watts
- Toaster – 850 watts
- Ceiling fan – 60 watts
- Vacuum Cleaner – 200 watts
- TV – 85 watts
- Sump pump (1/2 HP) – 1,050 watts
- Small heating system – 500 watts
- Laptop – 50 watts
- VCR / DVD Player – 100 watts
- Smaller electric appliances – 400 watts
- A couple of power tools – 800 watts
- Medium radiant heater – 1,800 watts
- Hammer drill – 1,000 watts
- Radial arm saw – 2,000 watts
- Bench grinder – 1,400 watts
- Electric water heater – 4,000 watts
- Window AC (10,000 BTU) – 1,200 watts
To learn, whether you can run all these at the same time you need to know the power consumption of each appliance in your home.
There are some universal rules and precautions you need to follow when you want to run your generator safely.
The best document on this topic is the OSHA Fact Sheet: Using Portable Generators Safely and here is a quick summary:
- Never attach a generator directly to the electrical system of a structure (home, office, trailer, etc.) unless a qualified electrician has properly installed the generator with a transfer switch.
- Always plug electrical appliances directly into the generator using the manufacturer’s supplied cords or extension cords that are grounded (3-pronged). Inspect the cords to make sure they are fully intact and not damaged, cut or abraded.
- Use ground fault circuit interrupters (GFCIs), especially where electrical equipment is used in or around wet or damp locations. GFCIs shut off power when an electrical current is detected outside normal paths.
- Never use a generator indoors or in enclosed spaces such as garages, crawl spaces, and basements. NOTE: Open windows and doors may NOT prevent CO from building up when a generator is located in an enclosed space.
- If you or others show symptoms of CO poisoning—dizziness, headaches, nausea, tiredness – get to fresh air immediately and seek medical attention.
- Keep fuel containers away from flame producing and heat generating devices (such as the generator itself, water heaters, cigarettes, lighters, and matches).
For more safety tips and precautions, read this article called “Generators and Heating Safety” from New York State Department of Health or the OSHA Fact Sheet: Using Portable Generators Safely.
In general, a 6500 running watts generator should provide enough power to run a well pump. Sadly, answering this question is hard without knowing the exact running and starting watts required by your water pump.
I have found rough estimates for different types of pumps:
- 1/3 Horse Power – It takes 750 running watts and 1500 starting watts.
- 1/2 Horse Power – It takes 1000 running watts and 2100 starting watts.
- 3/4 Horse Power – It takes 1500 running watts and 3000 starting watts.
- 1 Horse Power – It takes 2000 running watts and 4000 starting watts.
- 1 & 1/2 Horse Power – It takes 2500 running watts and 5000 starting watts.
As you can see in the estimates above, the issue is not running watts but starting watts. To get the precise numbers, you will need to find the voltage (120 or 240) and horsepower information on the info-plate of your pump.
Then, all it takes to learn required wattage is to apply this equation:
Watts (W or kW) = Volts (V) x Amps (A)
To learn more about powering water pump with your generator, I highly recommend you to read this great article from Oakville Pump Service called: So You Need a Generator Because Your Water is Off During Power Outages…
Although theoretically, you could run a very small central AC (that is modern and power efficient) with a 6500 running watts generator, we would rather go for an emergency window AC unit as 6500 generators may have too little starting power.
However, the answer to this question depends on the number of running and starting watts your AC unit requires.
Obviously, these numbers vary from one unit to another and are based on the cooling ability of individual models and brands. That is why you need to look for this data at the name tag of your central AC:
- LRA (Locked Rotor Amps) – This number represents the current you can expect under starting conditions when you apply full voltage.
- RLA (Rated Load Amps) – This number represents the maximum current a compressor should draw under any operating conditions.
- FLA (Full Load Amps) – This number represents the same as the Rated Load Amps.
Just note that you need to take into consideration the amps for both the compressor and the fan unit. To determine, if your 6500 watt generator can run a central AC, please consult the manufacturer or a professional electrician.
To discover the exact power needs of your AC unit, check out this helpful guide: How Many Watts Do 5,000 – 18,000 BTU Air Conditioners Use?
Keep in mind that a typical central air unit runs on a 208/240 volts and is often permanently mounted and hardwired into the electrical system of your house. That is why to safely run this electronic appliance you need to connect your generator through a transfer switch.
Actually, you should always connect your generator through a transfer switch if you don’t want to damage your appliances or endanger people who may be working on electric lines in your neighborhood.
In general, a 6500 running watts generator should provide enough power to run an RV AC unit (15000 BTU) without any issues. However, answering this question is really hard without knowing the exact running and starting watts required by your AC unit.
I have found rough estimates for different types of RV air conditioning units:
- 11000 BTU – It takes 1050 running watts and 1600 starting watts.
- 13000 BTU – It takes 1800 running watts and 2800 starting watts.
- 15000 BTU – It takes 2000 running watts and 3300 starting watts.
As you can see in the estimates above, the issue is not running watts but starting watts. To get the precise numbers, you will need to find the voltage, and amperage information on the info-plate of your RV AC unit.
Then, all it takes to learn required wattage is to apply this equation:
Watts (W or kW) = Volts (V) x Amps (A)
You can read more about this topic here:
In general, a refrigerator takes around 1200 surge watts at the beginning while the compressor kicks in and then it gradually drops down to around 200 running watts. As you can see, each and every generator in this article could run a mid-sized refrigerator.
A 6500 watt generator will run a refrigerator with a freezer with no problems. If you choose at least a 2000 starting watts inverter generator (Yamaha EF2000iSv2, WEN 56200i, or Generac GP2200i), you can power any modern refrigerator with a freezer easily.
Most fridges require about 800 – 1200 starting watts and 6500 watts is more than enough to power them safely.
Also, if your generator has a high total harmonic distortion, your fridge (especially if you have a modern type) may get damaged (that is why we recommend getting an inverter generator).
The size of a generator depends on the type of fridge you want to power:
- While modern appliances have much lower power consumption (around 300 – 400 watts), even while the compressor starts to kick in, the older types of fridges are going to need a bigger power supply (around 300 – 1,200 watts).
- Another aspect that will affect the required size of your generator is whether your fridge also comes with a freezer. In such a case it will require even more power (add 80 – 100 watts to those numbers mentioned above).
Learn more about power consumption of different types of refrigerators in our guide FAQ: What Size Generator Do I Need to Run a Refrigerator?
Usually, a 6500 running watts generator should provide enough power to run a small sump pump (1/2 horse power) without any issues. However, answering this question is really hard without knowing the exact running and starting watts required by your pump.
I have found rough estimates for different types of sump pumps:
- 1/3 Horse Power – It takes 800 running watts and 1300 starting watts.
- 1/2 Horse Power – It takes 1050 running watts and 2150 starting watts.
As you can see in the estimates above, the issue is not running watts but starting watts. To get the precise numbers, you will need to find the voltage, amperage, and horsepower information on the info-plate of your pump.
Then, all it takes to learn required wattage is to apply this equation:
Watts (W or kW) = Volts (V) x Amps (A)
Just keep in mind that your sump pump will probably require a 240V outlet on your generator. More on this topic can be found in these articles:
In general, a 6500 running watts generator should provide enough power to run an air compressor (1 horse power) without any issues. However, answering this question is really hard without knowing the exact running and starting watts required by your air compressor.
I have found rough estimates for different types of compressors:
- 1/2 Horse Power – It takes 975 running watts and 1600 starting watts.
- 1 Horse Power – It takes 1600 running watts and 4500 starting watts.
As you can see in the estimates above, the issue is not running watts but starting watts. To get the precise numbers, you will need to find the voltage, amperage, and horsepower information on the info-plate of your compressor.
Then, all it takes to learn required wattage is to apply this equation:
Watts (W or kW) = Volts (V) x Amps (A)
Read more in these articles:
Usually, a 6500 watt gasoline generator has a 4-stroke engine. If this is the case, you will need to use either SAE 30 (if you live in a hotter climate) or a SAE 10W-30 if you are going to use it in a colder climate.
However, there are many things you need to consider while choosing the best oil for your machine:
- Whether you got a 2-stroke or a 4-stroke engine
- Starting and operating temperatures
- Type of fuel your machine runs on
- Certifications and classifications of the oil
- Reputation of the brand and company behind the oil
If you need to learn more information on how to choose the best oil for your generator, then consult our guide that is available right here. We provide you also with a list of best brands in various categories of oil.
In general, a 6500 watt generator provides approximately 54.2 amps, in case of 120 volts or 27.0 amps in case of 240 volts. To learn more, you should check out the owner´s manual to the machine you want to buy.
Actually, identifying how many amps there are in a 6500 running watt generator is a very simple process. All you have to do is to apply the following formula:
Amps (A) = Watts (W or kW) / Volts (V)
You need to divide the wattage by the voltage. So, in this case you need to divide 6500 by 120 or 240 to get the correct numbers. Here is a great conversion calculator, in case you want to check for yourself and our helpful list of over 100+ products and their power needs.
Here is our handy cheat sheet as well:
- 500 Watts, 120 V = 4.2 A, 240 V = 2.1 A
- 1000 Watts, 120 V = 8.3 A, 240 V = 4.2 A
- 2000 Watts, 120 V = 16.7 A, 240 V = 8.3 A
- 3000 Watts, 120 V = 25.0 A, 240 V = 12.5 A
- 4000 Watts, 120 V = 33.3 A, 240 V = 16.7 A
- 5000 Watts, 120 V = 41.6 A, 240 V = 20.8 A
- 6000 Watts, 120 V = 50.0 A, 240 V = 25.0 A
- 7000 Watts, 120 V = 58.3 A, 240 V = 29.2 A
- 8000 Watts, 120 V = 66.7 A, 240 V = 33.3 A
- 9000 Watts, 120 V = 75.0 A, 240 V = 37.5 A
- 10000 Watts, 120 V = 83.3 A, 240 V = 41.7 A
- 12000 Watts, 120 V = 100.0 A, 240 V = 50.0 A
- 14000 Watts, 120 V = 116.7 A, 240 V = 58.3 A
- 16000 Watts, 120 V = 133.3 A, 240 V = 66.7 A
One of the most notable advantages of inverter generators is that they’re perfect for powering small devices, such as computers, televisions, and smartphones.
If you prioritize things like fuel efficiency, quietness, portability, and the ability to safely power sensitive electronics, you really can’t go wrong with an inverter generator.
While some traditional generators can produce upwards of 17,000 watts, inverter generators don’t usually reach figures higher than around 7,000.
PROS OF AN INVERTER GENERATOR:
- Produces power with significantly lower THD
- Lighter and smaller
- More energy efficient than traditional generators
- Much lower fuel consumption
- Parallel capability
- Safe for sensitive electronics like laptops or mobile phones
- Quieter than traditional generators
CONS OF AN INVERTER GENERATOR:
- Significantly more expensive than traditional generators
- Lower power output – limited wattage range
- Costly repairs and servicing
- Limited fuel options
For a comprehensive overview of inverter generators and how they work, read our guide here: What Is an Inverter Generator & How Does It Work? (Pros + Cons Included)
There are several features you can consider while shopping for the best generator for your home. Our team here at Generatorist recommends the following:
- At least 1 alternative fuel source if gasoline is not available
- Electric start with manual recoil backup for convenient use by anyone
- Included maintenance-free electric battery with a trickle charger
- Built-in inverter or automatic voltage regulation
- Automatic idle control for reduced fuel consumption
- Durable frame and steel fuel tank
- Fuel gauge and low-oil shutoff
- Manual fuel-shutoff switch/valve
- Longer run time
- OHV (overhead valve) engine
- Spark arrestor
- Multiple types of outlets with covers
- At least one outlet for higher wattage items (30 amp)
- Folding handles with a wheel kit
To read more about how to pick the best generator for your home, check out our helpful guide linked above.
We recommend you to consider the following features:
- Fuel Type – For job contractors, we recommend generators that are running on diesel as this type of fuel is more frequently used in other machines that are usually present on the job site. This way, your fuel management will be much easier.
- Long run time – The worst thing that can happen on a job-site is a downtime as it leads to profit loss. Every refueling takes your machine out of service for some time. Therefore, it is vital to get a generator that can run for a whole shift without the need to refuel. This way, you can do the refueling with basic maintenance after the work shift is over.
- Large gas tank – Although a large gas tank will diminish the portability of your generator, it will enable you to run it for a longer period of time without the need to refuel.
- Automatic idle control – The automatic idle control (also known as Eco Throttle or Smart Throttle) can save you a lot of fuel costs and can reduce the noise of your generator. It automatically adapts the rotations of your engine in relation to the actual load. If your generator runs idle, this system can significantly reduce the number of rotations per minute.
To discover more features you should look for in your next generator, read our tips in this article here: Choosing The Best Generator for Contractors
There is no single answer to this question. Actually, there are several features of your 6500 watt generator you need to consider while choosing your transfer switch.
We are going to cover this topic soon but in the meantime, feel free to read this comprehensive guide from Electric Generators Direct: How to Pick the Perfect Manual Transfer Switch or this one from GeneratorGrid: Transfer Switch for Your Portable Generator: Buyer’s Guide
Household Appliances
Kitchen Appliances | Rated (Running) Watts | Additional Surge Watts |
---|---|---|
Toaster | 850 W | 0 W |
Microwave | 1,000 W | 0 W |
Refrigerator / Freezer | 700 W | 2,200 W |
Coffee Maker | 1,000 W | 0 W |
Electric Stove (8" Element) | 2,100 W | 0 W |
Deep Freezer | 500 W | 1,500 W |
Electric Can Opener | 170 W | 0 W |
Dishwasher | 1,500 W | 1,500 W |
Food Processor | 400 W | 0 W |
Essential Appliances | Rated (Running) Watts | Additional Surge Watts |
---|---|---|
Electric Water Heater | 4,000 W | 0 W |
Well Water Pump (1/2 HP) | 1,000 W | 2,100 W |
Window AC (10,000 BTU) | 1,200 W | 3,600 W |
Window AC (12,000 BTU) | 3,250 W | 9,750 W |
Central AC (10,000 BTU) | 1,500 W | 4,500 W |
Central AC (24,000 BTU) | 3,800 W | 11,400 W |
Sump Pump (1/3 HP) | 800 W | 1,300 W |
Sump Pump (1/2 HP) | 1,050 W | 2,150 W |
Furnace Fan Blower (1/3 HP) | 700 W | 1,400 W |
Furnace Fan Blower (1/2 HP) | 800 W | 2,350 W |
Garage Door Opener (1/2 HP) | 875 W | 2,350 W |
Common Light Bulb | 75 W | 0 W |
Space Heater | 1,800 W | 0 W |
Laundry Appliances | Rated (Running) Watts | Additional Surge Watts |
---|---|---|
Washing Machine | 1,150 W | 2,250 W |
Clothes Dryer (Electric) | 5,400 W | 6,750 W |
Iron | 1,200 W | 0 W |
Hair Dryer | 1,250 W | 0 W |
Entertainment Appliances | Rated (Running) Watts | Additional Surge Watts |
---|---|---|
Laptop | 50 W | 0 W |
Television | 500 W | 0 W |
Stereo | 450 W | 0 W |
VCR / DVD Player | 100 W | 0 W |
Video Game System | 40 W | 0 W |
Other Appliances | Rated (Running) Watts | Additional Surge Watts |
---|---|---|
Clock Radio | 50 - 200 W | 0 W |
power tools & machines
Power tools | Rated (Running) Watts | Additional Surge Watts |
---|---|---|
Radial Arm Saw | 2,000 W | 2,000 W |
Circular Saw (7.25") | 1,400 W | 4,200 W |
Air Compressor (1/4 HP) | 975 W | 1,600 W |
Air Compressor (1 HP) | 1,600 W | 4,500 W |
Miter Saw (10") | 1,800 W | 1,800 W |
Reciprocating Saw | 960 W | 0 W |
Electric Drill | 600 W | 900 W |
Belt Sander | 1,200 W | 2,400 W |
Bench Grinder | 1,400 W | 2,500 W |
About Generatorist
Matthew Gerther
Founder, Generator enthusiast
Our aim here at the Generatorist is to become the No. 1 resource for all things related to generators & your power needs. We have helped over 600,000 visitors with our tips, articles and reviews and we will help you as well.
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