Three-Phase Current from kW

Rearranges the three-phase power formula to find amps.

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Formula

I = P ÷ (√3 × V × PF)

Example calculation

15 kW at 600 V, PF 0.9 → 16.0 A.

Practical HVAC use

Estimate expected current for heaters and loads before metering.

Common mistakes

Using this to size conductors — use nameplate MCA and code tables.

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Educational tool. Results are estimates from the stated formulas; always confirm with manufacturer data and the code adopted in your jurisdiction. All calculators