what is the formula to find Amp. for an 3 phase moter both if H.P. or if kW is known?
Answer Posted / tripathi
The formula for three phase power is p=root3*v*i*cos(fi)&
voltage gernally 415V & power factor is given in motor name
plate & kw is also mention in name plate.So u can calculate
current easily.if the power is given in H.P then multiplied
by .746.
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