Electrical power/ CALCULATOR

Single-phase AC load current

Convert real input power, voltage and power factor into apparent power and approximate steady current.

Real input powerWUse measured input power or the relevant manufacturer input rating—not useful heat or mechanical output.

Operating voltageVUse the voltage expected at the load during operation.

Power factor%Use documented or measured power factor. Enter 100% only for a near-resistive load.

Planning allowance% of estimated currentA transparent scenario allowance, not a universal breaker-sizing rule.

Approximate apparent power

2,316 VA

Estimated steady current

10.07 A

Current including allowance

12.59 A

Single-phase sinusoidal AC, steady RMS voltage, stated real input power and power factor, and one load. Starting current, harmonics, waveform, duty cycle, efficiency, voltage variation, conductor ampacity, breaker characteristics and local rules are excluded. Do not select a cable or protective device from this result alone.

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Electrical power

Single-phase copper voltage-drop screen

Estimate the resistive part of voltage drop and cable heat for a two-conductor single-phase run.