Standard Electrical Formulas Used for Power Consumption

 

Power Consumption Calculations Using Standard Electrical Formulas

TO DETERMINE: SINGLE-PHASE THREE-PHASE DIRECT
CURRENT
KVA I x E
1000		 I x E x 1.73
1000		 --------
Kilowatts I x E x PF
1000		 I x E x 1.73 x PF
1000		 I x E
1000
Horsepower I x E x %EFF x PF
746		 I x E x 1.732 x %EFF x PF
746		 I x E x %EFF
746
Amperes (when HP is known)     HP x 746    
E x %EFF x PF		          HP x 746         
1.73 x E x %EFF x PF		 HP x 746
E x %EFF
Amperes (when kW is known) KW x 1000
E x PF		 KW x 1000
1.73 x E x PF		 KW x 1000
E
Amperes (when KVA is known) KVA x 1000
E		 KVA x 1000
1.73 x E		 --------