effappcost

Most appliances and other electrical equipment have a nameplate that indicates the power requirements.



To calculate the wattage for any appliance, use the formulas below:

For single phase equipment (any residential equipment):

Watts = volts x amps

For three phase equipment (found in some commercial and most industrial equipment):

Watts = volts x amps x 1.732 (1.732 is the square root of 3)