⚡ 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 (2026-10-25)
🏭 Industrial Electrical Conversion · Three-Phase & Single-Phase

345 kVA to Amps at 415V Three-Phase AC (UK / AU)

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 345 kVA on a 415V Three-Phase AC (UK / AU) circuit.

Line Current (0.85 PF)479.97 AAt 1.0 PF: 479.97 A
Active / Apparent Power293.25 kW345.0 kVA · 181.74 kVAR
Recommended Breaker600 A (NEC)500 A (IEC Nominal)
Recommended Copper Wire1000 kcmilIEC Metric: 400 mm²

Engineering Breakdown for 345 kVA at 415V

Input Rating345 kVA (415V Three-Phase AC (UK / AU))
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)479.97 Amps
Amperage at 1.00 Power Factor (Resistive Load)479.97 Amps
Real Power (kW / Watts)293.25 kW (293,250 W)
Apparent Power (kVA) & Reactive Power (kVAR)345.0 kVA / 181.74 kVAR
Equivalent Mechanical Horsepower (HP)393.25 HP
NEC 125% Continuous Circuit Breaker600 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)1000 kcmil (NEC) / 400 mm² (IEC)

Frequently Asked Questions

How many amps is 345 kVA at 415V (3-Phase)?

At 415V Three-Phase AC (UK / AU), 345 kVA equals 479.97 Amps at an industrial power factor of 0.85 (or 479.97 Amps at unity power factor 1.0).

What size breaker and wire is needed for 345 kVA at 415V?

For 479.97A continuous load, NEC requires a 125% rated breaker of 600A with 1000 kcmil copper conductors, while IEC standard sizing uses a 500A breaker with 400 mm² copper cable.