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Size factor table

Apparatus
Size factor for inverter*
Dishwasher, Washing machine 3
Sump, well or submersible pump 3
Boiler fan 3
Industrial motor 3
Portable heaters powered by Kerosene or Diesel 3
Circular saw, Bench grinder 3
Lighting 3
Cutting device 3
Microwave oven (when nominal output power is also cooking power) 3
Illuminating lights, stroboscope 4
Air compressor 4
Laser printer, Device using Quartz lamps for heating 4
Air conditioner, refrigerator, freezer (compressor) 4

*Multiply the active rated power (Watts) of the device by this factor to find the continuous nominal power of the inverter to make it work.