A ½-hp Motor Amperage Requirement Calculation

What is the required amperage for a ½-hp motor that operates on 120 volts?

The required amperage for a ½-hp motor operating on 120 volts can be calculated using the formula P = IV, where P represents the wattage, I represents the amperage, and V represents the voltage. Given: - 1 hp = 745.7 Watts - Motor power (P) = ½ hp = 372.85 Watts - Voltage (V) = 120 Volts Now, we can calculate the amperage required for the motor: I = P / V I = 372.85 W / 120 V I ≈ 3.11 Amperes Therefore, the amperage required for the ½-hp motor operating on 120 volts is approximately 3.11 Amperes.

Amperage Requirement Calculation Details

Power (P): The power rating of the ½-hp motor can be calculated by converting the horsepower to watts. Since 1 hp is equivalent to 745.7 Watts, half of that would be 372.85 Watts.

Amperage (I): To find the required amperage, we use the formula I = P / V, where the power is 372.85 Watts and the voltage is 120 Volts. By substituting these values into the formula, we get:

I = 372.85 W / 120 V = 3.1071 A

Therefore, to operate the ½-hp motor on 120 volts, it requires an amperage of approximately 3.11 Amperes.

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