30 kW to Amps — How Many Amps Is 30 kW?
30 kW equals 125.00 amps at 240V (single phase) or 72.17 amps at 240V 3-phase. Common 30kW loads: Commercial HVAC, large solar array.
30 kW to Amps
125.00 A
at 240V single phase
30 kW Amps at Every Voltage
| Voltage | 1-Phase | 3-Phase |
|---|---|---|
| 120V | 250.00A | 144.34A |
| 208V | 144.23A | 83.27A |
| 240V | 125.00A | 72.17A |
| 277V | 108.30A | 62.53A |
| 480V | 62.50A | 36.09A |
The Formula
Single Phase: Amps = (kW × 1000) ÷ Volts. For 30 kW at 240V: (30 × 1000) ÷ 240 = 125.00A.
Three Phase: Amps = (kW × 1000) ÷ (Volts × 1.732). For 30 kW at 240V 3φ: (30 × 1000) ÷ (240 × 1.732) = 72.17A.
Wire and Breaker for 30 kW
At 240V single-phase (125.0A), recommended: 1/0 AWG copper with a 125A breaker. Use our Wire Size Calculator for exact sizing.
Disclaimer: Calculations for reference. Consult a licensed electrician.