Battery Equivalents and Replacements

What Will a 3000 Watt Generator Run?

3000 Watt power generators are a very popular category for homeowners, campers, outdoor enthusiasts, and similar people who want a relatively compact power generator that is able to power a relatively long list of home appliances and devices in emergencies, during blackouts, at construction sites, when camping and being generally off-the-grid.

3000 Watt power generators differ slightly in output power but can differ significantly in other features like fuel types, noise levels, start types, the list of available receptacles, and similar, so one has to choose according to the personal needs and requirements.

Updated: October 27, 2022.

generac 7127 iq3500

3000 Watt Power Generators

3000 Watt power generators feature Running Watts around 3000 Watt and Starting Watts in the 3000+ Watt range, can be powered by either gas or a combination of gas and propane (LPG - Liquid Petroleum Gas) gas, can be the inverter or classic power generators, can have a close frame or open frame construction, etc.

The following comparison chart lists some of the most popular 3000 Watt power generators with their most important features and specifications:

Model Running Watts
Starting Watts
Runtime Noise Receptacle
Champion 100263 3100/2790W
 7.5h @25% gas
14.5h @25% 20 lbs Propane Tank
59 dB AC: 120V 30A TT-30R, 2x 120V 20A 5-20R; DC: 12V, dual USB adapter
Champion 75531i 2800W
8h @25% 58 dB AC: 120V 30A TT-30R, 2x 120V 20A 5-20R; DC: 12V, dual USB adapter
Firman W3300iE 3000W
9h @25% 58 dB AC: 120V 20A Duplex 5-20R, 120V 30A TT-30R; DC: 12V 8.3A, USB 5V/2.1A port
Generac GP3000i 2300W
4.5h @50%
5.8h @25%
? AC: 120V 20A Duplex, 120V 30A L5-30R; DC: two USB ports (5V/2.1A, 5V/1A)
Generac GP3300i 2500W
4.5h @50%
7.0h @25%
? AC: 120V 20A Duplex, 120V 30A L5-30R; DC: two USB ports (5V/2.1A, 5V/1A)
Generac iQ3500 3000W
8.9h @50%
14.1h @25%
45* dB AC: 120V 20A Duplex 5-20R, 120V 30A L5-30R; DC: two USB ports (5V/2.1A, 5V/1A)
Genmax GM3300i 3000W
4.5h @50% 60 dB @25% AC: 120V 20A Duplex 5-20R, 120V 30A L5-30R; DC: 2x 5V USB
Honda EU3000IS 2800W
20h @25% 50 dB @25% AC: 120V 20A Duplex, 120V 30A L5-30R
Pulsar PG3500M 3000W
12h @50% ? AC: 120V 20A Duplex 5-20R; DC: 12V 8.3A
Pulsar PGD40ISCO 3200W
4.5h @50% 59 dB AC: 120V 20A Duplex 5-20R, 120V 30A TT-30R
WEN 56380i 3400W
8.5h @50% 57 dB AC: two 120V 15A 5-20R, 120V 30A TT-30R; DC: 12V, 5V USB
Westinghouse WGen3600DF 3600/3240W
18h @25%, 13.5h @50% Gas
10.5h @50% 20 lbs Propane Tank
68 dB AC: 120V Duplex 5-20R, 120V 30A TT-30R, 120V 30A L5-30R

Note: Amazon affiliate links (the 'Model' column) open in the new windows, feel free to check them for the most up-to-date offers and prices.

For more information about these generators feel free to check our Best 3000 Watt Power Generators article.

Wattage Charts of the Most Common Boat, Camping, RV, and Household Appliances

The following charts list the wattage requirements of various tools, gadgets, and appliances that may be powered by 3000 Watt power generators.

However, note that these are very often "the worst-case scenario" values and that in real-life, many devices require less power to operate.


Appliance/Tool Running Watts Starting Watts
Aquarium 200 250
Blender 300 800
Box Fan 20" 200 350
Ceiling Fan 100 300
Central AC 10.000 BTU 1500 2400
Central AC 24.000 BTU 3800 5000
Central AC 40.000 BTU 6000 7500
Clothes Dryer - Electric 5000 7000
Clothes Dryer - Gas 700 1800
Coffee Maker 1000 0
Curling Iron 1500 0
Deep Freezer 500 1500
Dishwasher 1300 1800
Electric Can Opener 170 220
Electric Grill 1.6 kW 1600 0
Electric Stove 2kW 2000 0
Electric Water Heater 4 kW 4000 0
Food Processor 400 0
Furnace Fan 1/3 HP 700 1400
Furnace Fan 1/2 HP 800 2350
Garage Door Opener 1/2 HP 900 2400
Hair Dryer 1.5 kW 1500 0
Heat Pump 4700 5500
Humidifier 13 gal. 175 0
Iron (Clothes) 1500 0
Iron (Waffles) 1200 0
Light Bulb 60 W 60 0
Light Bulb 75 W 75 0
Light LED Bulb 10 W 10 0
Microwave Oven 600 W 600 0
Microwave Oven 1000 W 1000 0
Refrigerator/Freezer 700 2200
RV Air Conditioner
7.000 BTU
900 1700
RV Air Conditioner
10.000 BTU
1200 2000
RV Air Conditioner
13.500 BTU
1600 2500
RV Air Conditioner
15.000 BTU
1700 2700
Security System 500 0
Space Heater 2 kW 2000 0
Sump Pump 1/3 HP 800 1300
Sump Pump 1/2 HP 1050 2200
Television 27" 500 0
Toaster 900 0
Toaster Oven 1200 0
Vacuum Cleaner 12 Amps 1440 2500
VCR 100 0
Washing Machine 1200 2300
Well Pump 1/2 HP 1000 2100
Window AC 5.000 BTU 600 900
Window AC 10.000 BTU 1200 1800
Window AC 12.000 BTU 1500 2300
Window AC 15.000 BTU 1900 2900

Job Site

Appliance/Tool  Running Watts Starting Watts
Air Compressor 1/4 HP 900 1600
Air Compressor 1 HP 1600 4500
Airless Sprayer 600 1200
Belt Sander 1200 2400
Circular Saw 7 1/4 inch 1400 2300
Electric Drill 3/8 inch 4 Amps 450 700
Electric Drill 1/2 inch 5.4 Amps 600 900
Halogen Work Light 300 W 300 0
Halogen Work Light 500 W 500 0
Halogen Work Light 1 kW 1000 0
Hammer Drill 1.2 kW 1200 3500
Miter Saw 10 inch 1800 2500
Planer/Jointer 6 inch 1800 2500
Reciprocating Saw 900 1300
Table Saw 10 inch 2000 2800


Appliance/Tool  Running Watts Starting Watts
Copy Machine 1600 0
Fax Machine 70 0
Inkjet Printer 80 0
Laptop 200 0
Laser Printer 900 0
PC w/21" Flat Screen 800 0


Appliance/Tool  Running Watts Starting Watts
AM/FM Radio 100 0
CD/DVD Player 100 0
Cell Phone Charger 25 0
Electric Trolling Motor
12V 55 lbs
800 1300
Electric Trolling Motor
12V 30 lbs, Kayak
450 700
Hedge Trimmer (Corded, 4 Amps) 500 900
Inflator Pump 50 150
Mower (Corded, 14 Amps) 1700 3000
Outdoor Light String 250 0
Outdoor LED Light String 35 0
Stereo 250 0
X-Box, Wii, Playstation 40 0

In order to find the exact power requirement of any device/appliance/tool, check its documentation or try to find a small label (usually at the back of the unit) with the most basic information which also contains the power requirement.

However, probably the best method to find out the actual power requirement of any device is to measure its wattage (voltage, current) while the device is being powered by mains power, power generator, power inverter, or even power station/solar generator.

wen 56380i

When powering a device with the power generators, it is recommended to start powering the largest loads and continue with the smaller ones.

Also, it is very important to take into account both Running Watts (continuous power requirements) and Starting Watts (surge/peak power requirements).

Note: power generators burn fuel during their operation and emit fumes that contain toxic and very dangerous Carbon Monoxide (CO) - power generators MUST be operated outside, at some distance from the nearest windows and doors. And no, an open garage door is not "outside".


In this example, we will try to find out what can Generac 7127 iQ3500-3500 Watt Portable Inverter Generator (Amazon link, link opens in the new window) run at home during the blackout.

Generac 7127 iQ3500 is one of the quietest power generators in its class, featuring 3000 Running Watts, 3500 Starting Watts, it can operate 8.9 hours @50% (1500W) load and 14.1 hours @25% (750W) load and features a very nice list of receptacles, including AC: 120V 20A Duplex 5-20R, 120V 30A L5-30R; DC: two USB ports (5V/2.1A, 5V/1A).

The following chart lists some of the home appliances that Generac 7127 iQ3500 can power simultaneously - if some other device or appliance must be powered, remove some of the connected devices prior to connecting a new device.

Appliance/Tool Running Watts Starting Watts
Microwave 1000W 1000 Watts 0 Watts
55" OLED TV 100 Watts 0 Watts
Medium Home Refrigerator 150 Watts 700 Watts
Home LED Lights 80 Watts 0 Watts
Large Ceiling Fan 100 Watts 300 Watts
USB Chargers 50 Watts 0 Watts
Modem/WiFi Router 50 Watts 0 Watts
Laptop 200 Watts 0 Watts
Total: 1730 Watts 2480 Watts

Note: When calculating Starting Watts, if the device has "0 Starting Watts" calculate the device's Running Watts value!

As one can see, in this example Generac 7127 iQ3500 can easily power devices in the list - the power generator load is ~58% Running Watts and ~71% Starting Watts for a few short moments when the refrigerator and ceiling fan start.

However, if somebody wants to run, for example, a window 12.000-15.000 BTU AC unit, it can be done, just be sure to check the exact wattage requirements of your AC unit(s) before connecting it to the Generac 7127 iQ3500 or any similar power generator - modern AC units are surprisingly efficient but better safe than sorry.

3000 watt gen mLong Story Short: When powering various appliances and tools using power generators, monitor your power generator, especially power output - it is the best indicator of actual power consumption and may help the user predict any possible issue.

Many modern devices are much more energy-efficient than similar units just a few years old - replacing older appliances (and recycling them properly) can keep energy bills in check and prolong runtime on a single fuel tank when such devices are powered by power generators.

If possible, prior to the blackouts, make a list of the devices that You intend to power with your power generator, write down their wattage requirements and test it - connect those devices to your power generator and measure the actual load. Often, this is the ONLY way to find out what can actually be powered by a power generator, power station/solar generator, or power inverter.