How to Calculate Current From HP – Electrical Engineering XYZ Formulae

Today Electrical Engineering XYZ shares 4 formulas to calculate current from the horsepowers.

These four formulas will help you to:

current-from-horsepower-formula

Calculate current from HP in DC Circuits

A 24 V DC Motor draws is rated at 1/8 HP. Find the current flowing through it. The recorded efficiency is 95%.

I = ((1/8) * 746) / (24 * 0.95) = 4.08 Amps

Calculate current from HP in single phase ac circuits

A single phase ac motor whose Horsepower is 1 is connected to the voltage source having value 120 V. Find the electrical current if the efficiency is 90%. (The power factor is 0.85)

I = (1 * 746) / (120 * 0.9 * 0.85) = 8.126 Amps

Click here to Download Power Factor HandBook from Electrical Engineering XYZ

Calculate current from HP in case of three phase circuits

Determine the electrical current which flows through a 1000 watt load, having a power factor 0.9 and which has a 230 V three phase ac source connected to it.

I = ( 1500 watt * 746 / 746) / (230 * 1.73 * 0.9) = 4.18 Amps

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