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

8 kW to Amps at 400V Three-Phase AC (IEC Europe)

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 8 kW on a 400V Three-Phase AC (IEC Europe) circuit.

Line Current (0.85 PF)13.58 AAt 1.0 PF: 11.55 A
Active / Apparent Power8.0 kW9.41 kVA · 4.96 kVAR
Recommended Breaker20 A (NEC)15 A (IEC Nominal)
Recommended Copper Wire14 AWGIEC Metric: 1.5 mm²

Engineering Breakdown for 8 kW at 400V

Input Rating8 kW (400V Three-Phase AC (IEC Europe))
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)13.58 Amps
Amperage at 1.00 Power Factor (Resistive Load)11.55 Amps
Real Power (kW / Watts)8.0 kW (8,000 W)
Apparent Power (kVA) & Reactive Power (kVAR)9.41 kVA / 4.96 kVAR
Equivalent Mechanical Horsepower (HP)10.73 HP
NEC 125% Continuous Circuit Breaker20 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)14 AWG (NEC) / 1.5 mm² (IEC)

Frequently Asked Questions

How many amps is 8 kW at 400V (3-Phase)?

At 400V Three-Phase AC (IEC Europe), 8 kW equals 13.58 Amps at an industrial power factor of 0.85 (or 11.55 Amps at unity power factor 1.0).

What size breaker and wire is needed for 8 kW at 400V?

For 13.58A continuous load, NEC requires a 125% rated breaker of 20A with 14 AWG copper conductors, while IEC standard sizing uses a 15A breaker with 1.5 mm² copper cable.

Other Power Ratings & Voltages

5 kW at 400V (3P)10 kW at 400V (3P)15 kW at 400V (3P)20 kW at 400V (3P)25 kW at 400V (3P)30 kW at 400V (3P)45 kW at 400V (3P)50 kW at 400V (3P)75 kW at 400V (3P)100 kW at 400V (3P)150 kW at 400V (3P)200 kW at 400V (3P)250 kW at 400V (3P)500 kW at 400V (3P)8 kW at 120V Single-Phase AC8 kW at 208V Single-Phase AC8 kW at 230V Single-Phase AC (IEC)8 kW at 240V Single-Phase AC (NEC)8 kW at 208V Three-Phase AC8 kW at 230V Three-Phase AC8 kW at 415V Three-Phase AC (UK / AU)8 kW at 480V Three-Phase AC (US Industrial)8 kW at 600V Three-Phase AC (Canada / Heavy)8 kW at 24V DC Direct Current8 kW at 48V DC Battery / Telecom Bus