Application Chart for Determining Electrical Load for Generator
Remember  1 kW = 1000 watts    2 kW = 2000 watts  and so on
The formula for finding wattage is:  Volts x Amps = Watts
Example: an appliance nameplate states 3 amps at 120 volts. 3 amps x 120 volts = 360 watts
Typical Electrical Appliance Wattage's
Application / Equipment Running/Rated 
Watts		 Starting/Surge 
Watts
Light Bulb (100w) 100 100
Radio AM/FM 50-200 50-200
Radio, CB 50 50
Fan 200 600
Television 300-400 300-400
Microwave Oven 700 1000
Air Conditioner (12,000 BTU) 3250 5000
Furnace Fan (1/3 hp blower motor) 600 1800
Vacuum cleaner 600 750
Sump pump (1/3 hp) 700 2100
Refrigerator/freezer 800 2400
Deep Freezer 500 1500
Circular saw 1000-2500 2300-4600
Circular saw 6" 800 1000
Floodlight 1000 1000
Drill 1/2" Electric 1000 1250
Toaster 1200 1200
Coffee maker 1200 1200
Skillet 1200 1200
Chain saw 14" Electric 1200 1500
Water well pump (1/2 hp) 1000 3000
Hot plate/range (per burner) 1500 1500
Table saw 10" 2000 6000
Water heater (storage type) 5000 5000
12V DC Battery Charger 120 120
Electric Motor Wattage Usage
Electric motors present a special problem. They require up to three times their rated wattage to start.
Example: an electric motor name plate states 5 amps at 120 volts, 5 amps x 120 volts = 600 watts.
Multiply this by 3. This will show the starting watts needed. 600 watts x 3 = 1800 watts to start.
Some motor name plates will show starting watts higher in some case 9 times higher, check the name plate.
******** ********              Approximate Starting Watts * 
Motor 
HP 
Rating		 Approximate
Running
Watts		 Universal 
Motors 
(small appliances)		 Repulsion 
Induction 
Motors		 Capacitor 
Motors		 Split 
Phase 
Motor
1/8 275 400 600 850 1200
1/4 400 500 850 1050 1700
1/3 450 600 975 1350 1950
1/2 600 750 1300 1800 2600
3/4 850 1000 1900 2600 x
1 1000 1250 2300 3000 x
1-1/2 1600 1750 3200 4200 x
2 2000 2350 3900 5100 x
3 3000 x 5200 6800 x
* - Always use starting watts, not running watts, when figuring correct electrical load
x - Motors of higher horse power are not generally used
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