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Formula Chart

Standard Electrical Formulas Used for Power Consumption Calculations

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
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