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

1125 kW to Amps at 208V Single-Phase AC

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 1125 kW on a 208V Single-Phase AC circuit.

Line Current (0.85 PF)6363.12 AAt 1.0 PF: 5408.65 A
Active / Apparent Power1125.0 kW1323.53 kVA · 697.21 kVAR
Recommended Breaker8000 A (NEC)6400 A (IEC Nominal)
Recommended Copper Wire12× 1000 kcmil (Parallel)IEC Metric: 12× 400 mm²

Engineering Breakdown for 1125 kW at 208V

Input Rating1125 kW (208V Single-Phase AC)
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)6363.12 Amps
Amperage at 1.00 Power Factor (Resistive Load)5408.65 Amps
Real Power (kW / Watts)1125.0 kW (1,125,000 W)
Apparent Power (kVA) & Reactive Power (kVAR)1323.53 kVA / 697.21 kVAR
Equivalent Mechanical Horsepower (HP)1508.65 HP
NEC 125% Continuous Circuit Breaker8000 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)12× 1000 kcmil (Parallel) (NEC) / 12× 400 mm² (IEC)

Frequently Asked Questions

How many amps is 1125 kW at 208V (1-Phase)?

At 208V Single-Phase AC, 1125 kW equals 6363.12 Amps at an industrial power factor of 0.85 (or 5408.65 Amps at unity power factor 1.0).

What size breaker and wire is needed for 1125 kW at 208V?

For 6363.12A continuous load, NEC requires a 125% rated breaker of 8000A with 12× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 6400A breaker with 12× 400 mm² copper cable.

Other Power Ratings & Voltages

5 kW at 208V (1P)10 kW at 208V (1P)15 kW at 208V (1P)20 kW at 208V (1P)25 kW at 208V (1P)30 kW at 208V (1P)45 kW at 208V (1P)50 kW at 208V (1P)75 kW at 208V (1P)100 kW at 208V (1P)150 kW at 208V (1P)200 kW at 208V (1P)250 kW at 208V (1P)500 kW at 208V (1P)1125 kW at 120V Single-Phase AC1125 kW at 230V Single-Phase AC (IEC)1125 kW at 240V Single-Phase AC (NEC)1125 kW at 208V Three-Phase AC1125 kW at 230V Three-Phase AC1125 kW at 400V Three-Phase AC (IEC Europe)1125 kW at 415V Three-Phase AC (UK / AU)1125 kW at 480V Three-Phase AC (US Industrial)1125 kW at 600V Three-Phase AC (Canada / Heavy)1125 kW at 24V DC Direct Current1125 kW at 48V DC Battery / Telecom Bus