Standard Electrical Formulas Used for Power Consumption Calculations

Standard Electrical Formulas Used for Power Consumption Calculations

TO DETERMINE SINGLE-PHASE THREE-PHASE DIRECT CURRENT 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 Not Applicable

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 Kilovolt/ Amperes I x E 1000 I x E x 1.73 1000 Not Applicable

Kilowatts
I x E x PF 1000

I x E x 1.73 x PF 1000

I x E 1000

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