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Electrical Load Current Calculator

Convert electrical input power to line current, per-phase real power and apparent power for a single-phase or balanced three-phase supply.

Inputs

Supply and load

Range: 0–100,000 kW

Enter electrical input power. For a motor, use nameplate input power or use the separate motor current calculator from shaft output, efficiency and power factor; do not enter mechanical shaft kW here.

Range: 1–100,000 V

Use phase-to-neutral voltage for single phase, and line-to-line voltage for balanced three phase. Typical Australian examples are 230/240 V single phase and 400/415 V three phase.

Range: 0.01–1

Enter the operating displacement power factor for the load. PF must be above zero; it is not a cable or protection rating.

Choose single phase for phase-to-neutral voltage or balanced three phase for line-to-line voltage.

Result

Apparent power (kVA)
11.11
Line current (A)
16.04
Balanced per-phase real power (kW)
3.33

Formula

Calculation logic

Formula definitions and substituted values.

Before relying on the result

  • Estimate current from a known kW load
  • Convert real power and power factor to apparent power
  • Use the calculated current as a basic electrical estimate with the entered voltage and power factor.

Related calculators

Use the calculated current as a basic electrical estimate with the entered voltage and power factor.