What Can a 7500-Watt Generator Run? – [Will It Fits My Needs]
This article aims to answer your questions about “what can a 7500-watt generator run?” How many appliances we can run simultaneously and will it fill my needs?
A 7,500-watt machine could run almost every essential of household, RV, or Job Site Including the RV/Window AC, Microwave, Refrigerator/Freezer, Electric Stove, Space Heater, Oven, Water heater, Washing Machine, Dryer, etc.
What Appliances Will a 7500 Watt Generator Run?
A 7,500-watt machine could run the following appliances of Household, Rv, or Job Site.
What Household Appliances Can I Run?
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| Microwave Oven 1000 W | 1000 | 0 |
| Furnace Fan 1/3 HP | 700 | 1400 |
| Sump Pump 1/3 HP | 800 | 1300 |
| Light Bulb 60 W | 60 | 0 |
| Electric Water Heater 4 kW | 4000 | 0 |
| Window AC 12.000 BTU | 1500 | 2300 |
| Deep Freezer | 500 | 1500 |
| Curling Iron | 1500 | 0 |
| Central AC 40.000 BTU | 6000 | 7500 |
| Light LED Bulb 10 W | 10 | 0 |
| Toaster Oven | 1200 | 0 |
| Food Processor | 400 | 0 |
| Dishwasher | 1300 | 1800 |
| Furnace Fan 1/2 HP | 800 | 2350 |
| Sump Pump 1/2 HP | 1050 | 2200 |
| Garade Door Opener 1/2 HP | 900 | 2400 |
| Electric Grill 1.6 kW | 1600 | 0 |
| Ceiling Fan | 100 | 300 |
| Refrigerator/Freezer | 700 | 2200 |
| Window AC 5.000 BTU | 600 | 900 |
| Vacuum Cleaner 12 Amps | 1440 | 2500 |
| Window AC 15.000 BTU | 1900 | 2900 |
| Toaster | 900 | 0 |
| Iron (Clothes) | 1500 | 0 |
| Clothes Dryer – Electric | 5000 | 7000 |
| Microwave Oven 600 W | 600 | 0 |
| Central AC 10.000 BTU | 1500 | 2400 |
| Window AC 12.000 BTU | 1500 | 2300 |
| Humidifier 13 gal. | 175 | 0 |
| Iron (Waffles) | 1200 | 0 |
| Hair Dryer 1.5 kW | 1500 | 0 |
| Box Fan 20″ | 200 | 350 |
| Microwave | 1000 | 1500 |
| Coffee Maker | 1000 | 0 |
| Well Pump 1/2 HP | 1000 | 2100 |
| Electric Stove 2kW | 2000 | 0 |
| Aquarium | 200 | 250 |
| Security System | 500 | 0 |
What RV Appliances Can I Run?
| Appliance | Running Wattage | Starting Watts |
|---|---|---|
| Electric Water Heater 4 kW | 4000 | 0 |
| Clothes Dryer – Electric | 5000 | 7000 |
| Deep Freezer | 500 | 1500 |
| RV Air Conditioner 7,000 BTU | 900 | 1700 |
| Blender | 300 | 800 |
| Microwave Oven 1000 W | 1000 | 0 |
| Toaster | 900 | 0 |
| Ceiling Fan | 100 | 300 |
| Dishwasher | 1300 | 1800 |
| Electric Grill 1.6 kW | 1600 | 0 |
| Television 27″ | 500 | 0 |
| Light Bulb 60 W | 60 | 0 |
| Light Bulb 75 W | 75 | 0 |
| Light LED Bulb 10 W | 10 | 0 |
| Curling Iron | 1500 | 0 |
| Iron (Clothes) | 1500 | 0 |
| Food Processor | 400 | 0 |
| Space Heater 2 kW | 2000 | 0 |
| Electric Stove 2kW | 2000 | 0 |
| Furnace Fan 1/3 HP | 700 | 1400 |
| Furnace Fan 1/2 HP | 800 | 2350 |
| Washing Machine | 1200 | 2300 |
| Vacuum Cleaner 12 Amps | 1440 | 2500 |
| Coffee Maker | 1000 | 0 |
| RV Air Conditioner 10,000 BTU | 1200 | 2000 |
| RV Air Conditioner 13,500 BTU | 1600 | 2500 |
| RV Air Conditioner 15,000 BTU | 1700 | 2700 |
What Jobsite Tools Can I Run?
| Appliance | Running Wattage | Starting Watts |
|---|---|---|
| Halogen Work Light 300 W | 300 | 0 |
| Electric Drill 1/2 inch 5.4 Amps | 600 | 900 |
| Air Compressor 1/4 HP | 900 | 1600 |
| Reciprocating Saw | 900 | 1300 |
| Belt Sander | 1200 | 2400 |
| Hammer Drill 1.2 kW | 1200 | 3500 |
| Circular Saw 7 1/4 inch | 1400 | 2300 |
| Miter Saw 10 inch | 1800 | 2500 |
| Planer/Jointer 6 inch | 1800 | 2500 |
| Airless Sprayer | 600 | 1200 |
| Electric Drill 3/8 inch 4 Amps | 450 | 700 |
| Halogen Work Light 1 kW | 1000 | 0 |
| Halogen Work Light 500 W | 500 | 0 |
| Table Saw 10 inch | 2000 | 2800 |
| Air Compressor 1 HP | 1600 | 4500 |
Recommended Guide: What appliances can a 12000-watt generator run?
Can a 7500W Generator Power Your Entire House?
It depends on the requirements; typically a 7500w generator would be more than enough to operate some of the standard appliances and tools like microwaves, refrigerators, window/RV air conditioners, sump pumps, air compressors, circular saws, electric drills, security systems, etc.
We recommend doing the manual power calculation before making any buying decision. Power calculation will not only provide you with a rough idea about the wattage needs of the household or RV but also save your ongoing cost of maintenance, fuel, and costly repairs.
How Many Appliances Can I Run Simultaneously?
It depends, if you are going to operate some of the standard wattage appliances like fans, microwaves, refrigerators, lights, LCDs, etc. you can run 10 – 12 simultaneously, however, if you have already plugged in a power-hungry appliance of 6,000 – 7,000 watts, you will have access to plug in another.
NOTE: You don’t have to overload your generator at any cost, however within the limits of 0 – 7,500 watts you can plug any appliance/equipment you want.
Check out the guide about fixing an overloaded generator.
How Can I Determine My Power Needs?
- List down the appliances/tools of your household/RV or job site with their starting and running wattages. You can find the power ratings from the energy labeling of a particular appliance.
- If you have found the power ratings in amps, make sure to convert them into the wattages with the help of Ohm’s law.
Ohm’s Law: W (watts X kilowatts) = Amps (amperes) X V (Voltages)
e.g.: An appliance consumes about 10 running and 15 starting amps at the voltage of 220V.
With the help of Ohm’s Law
W (watts X kilowatts) = Amps (amperes) X V (Voltages)
Running watts: 10 x 220 = 2200 watts
Starting Watts: 15×220 = 3300 watts
- Sum up the starting and running wattages of the appliances also make sure to keep them in a separate column.
- Compare the sum of wattages with a machine you are going to own.
Practical Example:
| Appliances | Starting Watts | Running Watts |
|---|---|---|
| Refrigerator | 1200 Watts | 200 Watts |
| Dishwasher | 1500 Watts | 1500 Watts |
| Deep Freezer | 1300 Watts | 700 Watts |
| Washing Machine | 0 Watts | 1200 Watts |
| Vacuum Cleaner 12 Amps | 2500 | 1440 |
| Microwave | 0 Watts | 800 Watts |
| TOTAL | 6,500 Watts | 5,840 Watts |
From the above calculations we got 6,500 starting and 5,840 running watts, hence a solid machine of 7.5kw would be enough for this quotation.
Recommended Read: What Can a 6500 Watt Generator Run?
NOTE: Keep a margin of 10 – 20% of the load so that the machine can run smoothly with decent efficiency.
Pulling the 100% load from a machine would not only overload the generator but also the flow of voltages, and as a result, you may have contaminated power with unstable voltages.
Recommended Guide: How to clean up the generator’s power?
What Size Breaker Do I Need for a 7500 Watt Generator?
30amp breakers would work like a charm for a 7,500-watt generator; however, for a machine with more than 9,000 watts, you should consider a 50-amp breaker.
Will a 7500-watt Generator Run My Air Conditioner?
A window or RV air-conditioner wouldn’t be a problem for a 7500-watt machine, however, if you own a central air conditioner unit with more than 40,000 BTUs you may have to consider a bigger generator of at least 12 – 15Kw.
Below are the air conditioners with different BTU and Wattage ratings that can run smoothly with a 7.5k unit.
- Window air conditioner of 5,000 – 18,000 BTUs (650 – 2250 Watts).
- RV air conditioner of 5,000 – 20,000 BTUs (500 – 3000Watts).
- A central air conditioner with 1450 – 6,000 running and 2,000 – 7000 starting Watts.
How Long Will a 7500-Watt Generator Run?
It depends on the fuel tank site, the efficiency of the generator, and how much power you are pulling from the machine. Typically a solid 7,500-watt machine like Champion 7500 provides at least 10 hours of runtime with a single tank of 5.5 – 6 gallons at 25% (1/4) load.
Will a 7500 Watt Generator Run a Furnace?
A standard household or RV furnace will not be a big problem for a 7.5kw machine since they typically consume about 600 – 3,000 depending on the size and model, however, if you are going to operate a huge furnace of 10,000 – 20,000 wattage you may have to consider a bigger machine of 15 – 24k.
Here is the Guide about what size generator I need to run a furnace.
How Many Amps Does a 7500 Watts Generator Provide?
Below are the readings we have got at the different voltages.
| Voltage | Amperes |
|---|---|
| At 240 volts | 31.25 amps |
| At 220 volts | 34.09 amps |
| At 120 volts | 62.5 amps |
NOTE: The above conversion has been made with the help of ohm’s law: W (watts) = V (volts) X Amps (amperes)
Verdicts
Though a 7500-watt generator would be enough for a small household, Class “B” or “C” RV, or a job site, still we recommend doing the wattage calculation to make sure that you will have a machine that not only fills your needs but also cut down the initial and future cost of fuel and maintenance.
FAQs – Frequently Asked Questions
How Long Will a 7500 Watt Generator Run on a Gallon of Gas?
It depends on the load you are pulling, however, a decent generator should provide at least 1.5 hours of runtime at 25% – 30% load.
How Long Will a 7500 Watt Generator Run On 5 Gallons of Propane?
A 7500w generator can provide about 5 – 5.5 hours of runtime with 5 gallons of propane.
How Many Things Can You Run on a 7500-Watt Generator?
It is a lengthy process to calculate how many appliances a 7,500-watt machine can run, however, you can run anything within the 0 – 7,500-watt range. I have included a section in this article that explains which appliances can be run simultaneously, please have a look.
Kashif has been a valuable asset to the electric generator industry for over 5 years. Now, As a skilled energy engineer, he’s been on the front lines of diagnosing problems, fixing broken parts, and performing routine maintenance tasks to keep generators running smoothly.