Question

A ½-hp motor requires 120 volts. What amperage is required?

hp = for every 1 hp it takes 745.7 W

P = hp * 745.7W / 1 hp)

P = IV

P = wattage

I = amperage

V = voltage

Answer 1

3.11 A

Step-by-step explanation:

Use the given relations between power, horsepower, voltage, and current to find the current requirement for the motor.

P = hp(745.7 W) = (1/2)(745.7 W) = 372.85 W

I = P/V = (372.85 W)/(120 V) = 3.1071 A

The amperage required is about 3.11 A.