What is the technical formula to calculate the load taken by a motor in Amperes ?

Answer Posted / anand_gupta112001

Amperes when horsepower is known

1) HP x 746/E x Eff x pf (for single phase)

2) HP x 746/1.73 x E x Eff x pf (for 3 phase)

Amperes when kilowatts are known
3) Kw x 1000/E x pf (for single phase)

4) Kw x 1000/1.73 x E x pf (for 3 phase)

Note: I = Amperes; E = Volts; Eff = Efficiency; pf = Power Factor; Kva = Kilovolt-amperes; Kw = Kilowatts

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