In reply to:

I may be wrong but I think you would use the formula Watts = volts x amps (this is used for single phase motors) I'm sure others will know if it's correct or not...

edit Actually that won't work because it's a DC equation.




The correct power formula for AC is watts= volts x amps x PF with PF being the power factor of less than or equal to 1. Resistive loads approach 1.0, whereas inductive loads such as electric motors develop peak current consumption out of phase, reducing overall power consumption.

Stu
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