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kW ↔ Amps Converter

Instant conversion at any voltage and phase — transparent math, with generator-sizing context.

kW

Voltage

Phase

0.80
0.701.00

Three-phase generators are conventionally rated at 0.8 power factor.

Result

150.4A

I = 100 kW × 1000 ÷ (√3 × 480 V × 0.8) = 150.4 A

Common generator sizes at 480 V · 3φ · PF 0.80

GeneratorFull-load amps
20 kW30.1 A
50 kW75.2 A
100 kW150.4 A
150 kW225.5 A
200 kW300.7 A

These amps drive your transfer-switch and feeder sizing. Not sure what kW you need? Run the 60-second finder

This tool is a planning aid. It does not replace final engineering review, AHJ determination, or a formal quote. Verify requirements with your AHJ and a licensed engineer.

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