⚡ Cu ρ (75°C): 0.0214 Ω·mm²/m 🔌 NEC / IEC Standards: NFPA 70 & IEC 60364 🇺🇸 US Grid Avg: $0.175/kWh 🇩🇪 DE Grid Avg: €0.345/kWh 🇸🇪 SE Elpris: 1.54 SEK/kWh 🇳🇴 NO Strøm: 1.17 NOK/kWh 🔩 Copper Ref: $9,650/t (2026-10-24)
🏭 Industrial Electrical Conversion · Three-Phase & Single-Phase

1200 kVA to Amps at 208V Three-Phase AC

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 1200 kVA on a 208V Three-Phase AC circuit.

Line Current (0.85 PF)3330.87 AAt 1.0 PF: 3330.87 A
Active / Apparent Power1020.0 kW1200.0 kVA · 632.14 kVAR
Recommended Breaker4200 A (NEC)3400 A (IEC Nominal)
Recommended Copper Wire7× 1000 kcmil (Parallel)IEC Metric: 6× 400 mm²

Engineering Breakdown for 1200 kVA at 208V

Input Rating1200 kVA (208V Three-Phase AC)
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)3330.87 Amps
Amperage at 1.00 Power Factor (Resistive Load)3330.87 Amps
Real Power (kW / Watts)1020.0 kW (1,020,000 W)
Apparent Power (kVA) & Reactive Power (kVAR)1200.0 kVA / 632.14 kVAR
Equivalent Mechanical Horsepower (HP)1367.84 HP
NEC 125% Continuous Circuit Breaker4200 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)7× 1000 kcmil (Parallel) (NEC) / 6× 400 mm² (IEC)

Frequently Asked Questions

How many amps is 1200 kVA at 208V (3-Phase)?

At 208V Three-Phase AC, 1200 kVA equals 3330.87 Amps at an industrial power factor of 0.85 (or 3330.87 Amps at unity power factor 1.0).

What size breaker and wire is needed for 1200 kVA at 208V?

For 3330.87A continuous load, NEC requires a 125% rated breaker of 4200A with 7× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 3400A breaker with 6× 400 mm² copper cable.

Other Power Ratings & Voltages

5 kVA at 208V (3P)10 kVA at 208V (3P)15 kVA at 208V (3P)20 kVA at 208V (3P)25 kVA at 208V (3P)30 kVA at 208V (3P)45 kVA at 208V (3P)50 kVA at 208V (3P)75 kVA at 208V (3P)100 kVA at 208V (3P)150 kVA at 208V (3P)200 kVA at 208V (3P)250 kVA at 208V (3P)500 kVA at 208V (3P)1200 kVA at 120V Single-Phase AC1200 kVA at 208V Single-Phase AC1200 kVA at 230V Single-Phase AC (IEC)1200 kVA at 240V Single-Phase AC (NEC)1200 kVA at 230V Three-Phase AC1200 kVA at 400V Three-Phase AC (IEC Europe)1200 kVA at 415V Three-Phase AC (UK / AU)1200 kVA at 480V Three-Phase AC (US Industrial)1200 kVA at 600V Three-Phase AC (Canada / Heavy)1200 kVA at 24V DC Direct Current1200 kVA at 48V DC Battery / Telecom Bus