Electrical Formulas: 
I = amperes E = volts KW = Kilowatts KVA = kilovolt/amperes HP = horsepower % Eff. = percent efficiency PF = power factor  
To
Find

Single
Phase

Three
Phase

Direct
Current

AMPERES
when KVA is known

KVA
X 1000 
KVA
X 1000
E X 1.73 
Not
Applicable

AMPERES
when horsepower is known

HP
X 746
E X % Eff.X PF 
HP
X 746
E X 1.73 X % Eff. X PF 
HP
X 746
E X % Eff. 
AMPERES
when kilowatts are known

KW
X 1000
E X PF 
KW
X 1000
E X 1.73 X PF 
KW
X 1000
E 
KILOWATTS

I
X E X PF
1000 
I
X E X 1.73 X
PF
1000 
I
X E
1000 
KILOVOLT/
AMPERES 
I
X E
1000 
I
X E X 1.73
1000 
Not
Applicable

HORSEPOWER

I
X E X % Eff. X
PF
746 
I
X E X 1.73 X
% Eff. X PF
746 
I
X E X % Eff.
746 
WATTS

E
X I X
PF

E
X I X
1.73 X PF

E
X I
