AVERAGE WATTAGE REQUIREMENT GUIDE
(AMPS X VOLTS = WATTS)
Household Running
Wattage
Requirements 		Additional
Wattage Required
For Starting
Coffee Maker 1750 0
Dishwasher
Cool Dry 		700 1400
Electric Fry Pan 1300 0
Electric Range
8-inch element 		2100 0
Microwave Oven 625 watts 625 800
Refrigerator or Freezer 700 2200
Automatic Washer 1150 2300
Clothes Dryer
Electric 		5750 1800
Lights as indicated on bulb 0
Radio 50 to 200 0
Furnace Fan, gas or fuel oil
1/8 Horsepower 300 500
1/6 Horsepower 500 750
1/4 Horsepower 600 1000
1/3 Horsepower 700 1400
1/2 Horsepower 875 2350
Sump Pump
1/3 Horsepower 800 1300
1/2 Horsepower 1050 2150
Television - Color 300 0
Central Air Conditioner 10,000 BTU 1500 2200
Contractor Running Wattage
Requirements 		Additional
Wattage Required
For Starting
Air Compressor 1 Horsepower 1500 4500
Bench Grinder 8 inches 1400 2500
Hand Drill 1/2 inch 600 0
High-pressure Washer 1 Horsepower 1200 3600
Circular Saw, Heavy Duty 7 1/4 inches 1400 2300
Electric Chain Saw 14 inches, 2 Horsepower 1100 0
Table Saw 10 inches 1800 4500
Drills
3/8 inch 4 amps 440 600
1/2 inch 5.4 amps 600 900
Industrial Motors Running Wattage
Requirements 		Additional
Wattage Required
For Starting
Split Phase
1/4 Horsepower 600 1000
1/2 Horsepower 875 2300
Capacitor Start Induction Run
1/3 Horsepower 720 1300
1 Horsepower 1600 4500
Capacitor Start Capacitor Run
1 1/2 Horsepower 2000 6100
Fan Duty
1/4 Horsepower 650 1200
Farm Equipment Running Wattage
Requirements 		Additional
Wattage Required
For Starting
Electric Fence, 25 miles 250 0
Milk Cooler 1100 1800
Milker (vacuum pump),2 Horsepower 1000 2300
Portable Heater (kerosene, diesel fuel)
50,000 BTU 400 600
90,000 BTU 500 725
150,000 BTU 625 1000
Battery Charger
15 amp 380 0
60 amp with 250-amp boost 1500/5750 0
100 amp with 300-amp boost 2400/7800 0
Electric Welder
200 amp AC 9000 0
230 amp AC, at 100 amp 7800 0
Air Compressors Running Running
Wattage Requirements 		Additional
Wattage Required
For Starting
1/2 Horsepower 975 1600
1 Horsepower 1600 4500
Computers Running Wattage
Requirements 		Additional
Wattage Required
For Starting
Desktop 600 to 800 0
Laptop 200 to 250 0
Monitor 200 to 250 0
Fax 600 to 800 0
Printer 400 to 600 0