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

12.5 kW to Amps at 230V Three-Phase AC

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 12.5 kW on a 230V Three-Phase AC circuit.

Line Current (0.85 PF)36.91 AAt 1.0 PF: 31.38 A
Active / Apparent Power12.5 kW14.71 kVA · 7.75 kVAR
Recommended Breaker50 A (NEC)40 A (IEC Nominal)
Recommended Copper Wire8 AWGIEC Metric: 6 mm²

Engineering Breakdown for 12.5 kW at 230V

Input Rating12.5 kW (230V Three-Phase AC)
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)36.91 Amps
Amperage at 1.00 Power Factor (Resistive Load)31.38 Amps
Real Power (kW / Watts)12.5 kW (12,500 W)
Apparent Power (kVA) & Reactive Power (kVAR)14.71 kVA / 7.75 kVAR
Equivalent Mechanical Horsepower (HP)16.76 HP
NEC 125% Continuous Circuit Breaker50 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)8 AWG (NEC) / 6 mm² (IEC)

Frequently Asked Questions

How many amps is 12.5 kW at 230V (3-Phase)?

At 230V Three-Phase AC, 12.5 kW equals 36.91 Amps at an industrial power factor of 0.85 (or 31.38 Amps at unity power factor 1.0).

What size breaker and wire is needed for 12.5 kW at 230V?

For 36.91A continuous load, NEC requires a 125% rated breaker of 50A with 8 AWG copper conductors, while IEC standard sizing uses a 40A breaker with 6 mm² copper cable.

Other Power Ratings & Voltages

5 kW at 230V (3P)10 kW at 230V (3P)15 kW at 230V (3P)20 kW at 230V (3P)25 kW at 230V (3P)30 kW at 230V (3P)45 kW at 230V (3P)50 kW at 230V (3P)75 kW at 230V (3P)100 kW at 230V (3P)150 kW at 230V (3P)200 kW at 230V (3P)250 kW at 230V (3P)500 kW at 230V (3P)12.5 kW at 120V Single-Phase AC12.5 kW at 208V Single-Phase AC12.5 kW at 230V Single-Phase AC (IEC)12.5 kW at 240V Single-Phase AC (NEC)12.5 kW at 208V Three-Phase AC12.5 kW at 400V Three-Phase AC (IEC Europe)12.5 kW at 415V Three-Phase AC (UK / AU)12.5 kW at 480V Three-Phase AC (US Industrial)12.5 kW at 600V Three-Phase AC (Canada / Heavy)12.5 kW at 24V DC Direct Current12.5 kW at 48V DC Battery / Telecom Bus