Scope

Power-factor arithmetic only. It does not determine utility penalties, capacitor sizing, or equipment acceptance.

Lookup table

Estimate how current rises as power factor decreases for the same real power.

Scroll sideways to keep row labels aligned with hidden columns.

Formula basis: current multiplier = 1 / power factor for the same real power and voltage.
Power factorCurrent multiplier vs PF 1.0Approx. current increaseUse
110 percentSame kW at lower power factor requires more current
0.951.0535 percentSame kW at lower power factor requires more current
0.91.11111 percentSame kW at lower power factor requires more current
0.851.17618 percentSame kW at lower power factor requires more current
0.81.2525 percentSame kW at lower power factor requires more current
0.751.33333 percentSame kW at lower power factor requires more current
0.71.42943 percentSame kW at lower power factor requires more current
0.61.66767 percentSame kW at lower power factor requires more current
Notes
  • Check table values for preliminary lookup and arithmetic checks only.
  • Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.