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🏭 Industrial Electrical Conversion · Three-Phase & Single-Phase

30 kW to Amps at 480V Three-Phase AC (US Industrial)

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 30 kW on a 480V Three-Phase AC (US Industrial) circuit.

Line Current (0.85 PF)42.45 AAt 1.0 PF: 36.08 A
Active / Apparent Power30.0 kW35.29 kVA · 18.59 kVAR
Recommended Breaker60 A (NEC)45 A (IEC Nominal)
Recommended Copper Wire8 AWGIEC Metric: 10 mm²

Engineering Breakdown for 30 kW at 480V

Input Rating30 kW (480V Three-Phase AC (US Industrial))
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)42.45 Amps
Amperage at 1.00 Power Factor (Resistive Load)36.08 Amps
Real Power (kW / Watts)30.0 kW (30,000 W)
Apparent Power (kVA) & Reactive Power (kVAR)35.29 kVA / 18.59 kVAR
Equivalent Mechanical Horsepower (HP)40.23 HP
NEC 125% Continuous Circuit Breaker60 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)8 AWG (NEC) / 10 mm² (IEC)

Frequently Asked Questions

How many amps is 30 kW at 480V (3-Phase)?

At 480V Three-Phase AC (US Industrial), 30 kW equals 42.45 Amps at an industrial power factor of 0.85 (or 36.08 Amps at unity power factor 1.0).

What size breaker and wire is needed for 30 kW at 480V?

For 42.45A continuous load, NEC requires a 125% rated breaker of 60A with 8 AWG copper conductors, while IEC standard sizing uses a 45A breaker with 10 mm² copper cable.

Other Power Ratings & Voltages

5 kW at 480V (3P)10 kW at 480V (3P)15 kW at 480V (3P)20 kW at 480V (3P)25 kW at 480V (3P)45 kW at 480V (3P)50 kW at 480V (3P)75 kW at 480V (3P)100 kW at 480V (3P)150 kW at 480V (3P)200 kW at 480V (3P)250 kW at 480V (3P)500 kW at 480V (3P)30 kW at 120V Single-Phase AC30 kW at 208V Single-Phase AC30 kW at 230V Single-Phase AC (IEC)30 kW at 240V Single-Phase AC (NEC)30 kW at 208V Three-Phase AC30 kW at 230V Three-Phase AC30 kW at 400V Three-Phase AC (IEC Europe)30 kW at 415V Three-Phase AC (UK / AU)30 kW at 600V Three-Phase AC (Canada / Heavy)30 kW at 24V DC Direct Current30 kW at 48V DC Battery / Telecom Bus