0
HP/.00134= Watts
Then
Watts divided by Volts = AMPS
For expample.
a .75 HP electric motor running on 220VAC uses 2.544 amps
.75 / .00134 = 559.7015 Watts
then
559.7015 / 220 = 2.544
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoA motor's horsepower is its output power, which will be less than its input power, due to the efficiency of the machine. So, you need to know the efficiency to calculate the inputpower. To calculate the supply current then depends on whether it is a d.c. motor, a single-phase a.c. motor, or a three-phase a.c. motor. For a d.c. motor and a single-phase a.c. motor, you can determine the current from P=EI; for a three-phase a.c. motor, you can determine the current from P=1.732x EI.
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