To Find

Direct Current 

AC / 1phase
115v or 120v 

AC / 1phase
208,230, or 240v 

 AC 3 phase
All Voltages

Amps when
Horsepower is Known

 HP x 746
E x Eff

 HP x 746
E x Eff X PF

 HP x 746
E x Eff x PF

 HP x 746
1.73 x E x Eff x PF

Amps when
Kilowatts is known

 kW x 1000
E

 kW x 1000
E x PF

 kW x 1000
E x PF

 kW x 1000
1.73 x E x PF

Amps when
kVA is known

 kVA x 1000
E

 kVA x 1000
E

 kVA x 1000
1.73 x E

Kilowatts

 I x E
1000

 I x E x PF
1000

 I x E x PF
1000

 I x E x 1.73 PF
1000

Kilovolt-Amps

 I x E
1000

 I x E
1000

 I x E x 1.73
1000