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

4 kVA to Amps at 240V Single-Phase AC (NEC)

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 4 kVA on a 240V Single-Phase AC (NEC) circuit.

Line Current (0.85 PF)16.67 AAt 1.0 PF: 16.67 A
Active / Apparent Power3.4 kW4.0 kVA · 2.11 kVAR
Recommended Breaker25 A (NEC)20 A (IEC Nominal)
Recommended Copper Wire12 AWGIEC Metric: 4 mm²

Engineering Breakdown for 4 kVA at 240V

Input Rating4 kVA (240V Single-Phase AC (NEC))
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)16.67 Amps
Amperage at 1.00 Power Factor (Resistive Load)16.67 Amps
Real Power (kW / Watts)3.4 kW (3,400 W)
Apparent Power (kVA) & Reactive Power (kVAR)4.0 kVA / 2.11 kVAR
Equivalent Mechanical Horsepower (HP)4.56 HP
NEC 125% Continuous Circuit Breaker25 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)12 AWG (NEC) / 4 mm² (IEC)

Frequently Asked Questions

How many amps is 4 kVA at 240V (1-Phase)?

At 240V Single-Phase AC (NEC), 4 kVA equals 16.67 Amps at an industrial power factor of 0.85 (or 16.67 Amps at unity power factor 1.0).

What size breaker and wire is needed for 4 kVA at 240V?

For 16.67A continuous load, NEC requires a 125% rated breaker of 25A with 12 AWG copper conductors, while IEC standard sizing uses a 20A breaker with 4 mm² copper cable.

Other Power Ratings & Voltages

5 kVA at 240V (1P)10 kVA at 240V (1P)15 kVA at 240V (1P)20 kVA at 240V (1P)25 kVA at 240V (1P)30 kVA at 240V (1P)45 kVA at 240V (1P)50 kVA at 240V (1P)75 kVA at 240V (1P)100 kVA at 240V (1P)150 kVA at 240V (1P)200 kVA at 240V (1P)250 kVA at 240V (1P)500 kVA at 240V (1P)4 kVA at 120V Single-Phase AC4 kVA at 208V Single-Phase AC4 kVA at 230V Single-Phase AC (IEC)4 kVA at 208V Three-Phase AC4 kVA at 230V Three-Phase AC4 kVA at 400V Three-Phase AC (IEC Europe)4 kVA at 415V Three-Phase AC (UK / AU)4 kVA at 480V Three-Phase AC (US Industrial)4 kVA at 600V Three-Phase AC (Canada / Heavy)4 kVA at 24V DC Direct Current4 kVA at 48V DC Battery / Telecom Bus