TO FIND
DIRECT CURRENT
ALTERNATING CURRENT
Single Phase
Three Phase
Amperes when horsepower (Input) is known
HP X 746/E x Eff
HP X 746/E x Eff x P.F.
HP x 746/1.73 x E x Eff x P.F.
Amperes when kilowatts is known
KW x 1000/E x P.F.
KW x 1000/1.73 x E x P.F.
Amperes when Kva is known
Kva x 1000/E
Kva x 1000/1.73 x E
Kilowatts
I x E/1000
I x E x P.F./1000
1.73 x I x E x P.F./1000
Kva
1.73 x I x E/1000
P.F.
KW/Kva
Horsepower (Output)
I x E x Eff/746
I x E x Eff x P.F./746
1.73 x I x E x Eff x P.F./746
I = Amperes
Eff = Efficiency (decimal)
Kva = Kilovolt-amperes
E = Volts
P.F. = Power Factor
KW = Kilowatts
HP = Horsepower
