Formula variables
- Amps are the entered three-phase line current.
- Voltage is the line-line nominal voltage.
- Power factor converts apparent power to real power.
- kW is an arithmetic estimate and not a billing-demand determination.
Assumptions
- The calculator assumes a balanced three-phase load.
- Power factor is entered by the user and converts kVA into kW.
- Measured current should be steady and representative before using the output.
- This calculator does not verify demand, duty cycle, harmonic content, or equipment loading limits.
Examples
Measured 600 V load. 80 A at 600 V and 0.90 PF estimates about 83.14 kVA and 74.82 kW.
Power study workflow. Use actual meter data and demand intervals before treating a current reading as a load or billing value.