Fig. 11 - Estimated wattage requirements of common electrical devices
USING THE GENERATOR
DETERMINING ELECTRICAL DEVICES
Rated (Running) Wattage: 4500W. The rated wattage is the wattage that the generator can produce on a con-
tinuous basis. The total running wattage requirement of the electrical devices connected to the generator should not
exceed the rated wattage of the generator 4500W.
Surge Wattage: 5000W. The surge wattage is the maximum amount of power the generator can produce for an
extremely short period of time (seconds). Many electrical devices such as refrigerators require short bursts of extra
power in addition to the rated wattage listed by the device to start their motors. The surge wattage ability of the gen-
erator covers this extra power requirement.
The wattage of each electrical device should be listed on the device or in its instruction manual. If this wattage
cannot be found, calculate it by multiplying the Voltage requirement by the Amperage drawn: Watts = Volts x Am-
peres. Use the chart below only as an estimated reference. However, do not solely rely on this chart - all electronics
and appliances are built differently. These are not standard wattages across the board, only estimations. Always
check the wattage listed on the electrical device before consulting this chart.
Tool or Appliance Rated (Running) Watts Surge (Starting) Watts
Electric water heater (40 Gal) 4000 0
Hot plate 2500 0
Saw - radial arm 2000 2000
Electric stove (each element) 1500-2800 0
Saw - circular 1500 1500
Air compressor (1 HP) 1500 3000
Window air conditioner 1200 1800
Saw - miter 1200 1200
Microwave 1000 0
Well water pump 1000 1000
Saw - reciprocating 960 1040
Sump pump 800 1200
Refrigerator freezer 800 1200
Furnace blower 800 1300
Computer 800 0
Electric drill 600 900
Television 500 0
Deep freezer 500 500
Garage door opener 480 0
Stereo 400 0
Box fan 300 600
Clock radio 300 0
Security system 180 0
DVD player / VCR 100 0
Common light bulb 75 0
14
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