Wanco AB Series, Owner'S Manual

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Owner’s Manual 23
Wanco Two-Bearing Belt-Drive Generators
Appendix A
Power requirements
The information provided in this appendix is for reference only.
Values presented here are not necessarily representative of all such
equipment.
A.1 Sizing the generator
In most applications, the generator will provide power to devices
that use a total wattage rating up to the rated wattage output of the
generator. For example, to power ten 100 watt light bulbs, the
generator rated wattage output would need to be 1000 watts
(10

100 = 1000).
In order to operate an appliance that has an electric motor, such as a
compressor, pump, freezer, saw, or drill, you must calculate the
wattage required to start the appliance motor. The rule of thumb is
to multiply the wattage requirement by three. For example, to run a
drill with a rated wattage requirement of 300 watts, the wattage
requirement to start the electric motor would be 900 watts
(300

3 = 900).
■
To calculate wattage, use the formula in Figure A-1.
■
For the approximate starting wattage for appliances with motors,
see Table A-1.
■
When using extension cords, refer to Table A-2.
■
For approximate equipment power requirements, see Table A-3.
Figure A-1 Formula for calculating wattage
Volts Amps

Watts =