In a DC circuit Power (P) in watts is equal to Voltage (E) times Current (I).1000 Watt = 1 kWP = EI thus I= P/EFor kW then I = (P x 1000)/EExample with Power of 2 kW and Voltage of 250 V DC:I =...
Single phase formula for you to use kW = I x E x pf/1000. Three phase kW = I x E x 1.73 x pf/1000. pf = power factor. Use .9 for pf and the answer will be close.