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

20 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 20 kVA on a 240V Single-Phase AC (NEC) circuit.

Line Current (0.85 PF)83.33 AAt 1.0 PF: 83.33 A
Active / Apparent Power17.0 kW20.0 kVA · 10.54 kVAR
Recommended Breaker110 A (NEC)90 A (IEC Nominal)
Recommended Copper Wire4 AWGIEC Metric: 25 mm²

Engineering Breakdown for 20 kVA at 240V

Input Rating20 kVA (240V Single-Phase AC (NEC))
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)83.33 Amps
Amperage at 1.00 Power Factor (Resistive Load)83.33 Amps
Real Power (kW / Watts)17.0 kW (17,000 W)
Apparent Power (kVA) & Reactive Power (kVAR)20.0 kVA / 10.54 kVAR
Equivalent Mechanical Horsepower (HP)22.8 HP
NEC 125% Continuous Circuit Breaker110 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)4 AWG (NEC) / 25 mm² (IEC)

Frequently Asked Questions

How many amps is 20 kVA at 240V (1-Phase)?

At 240V Single-Phase AC (NEC), 20 kVA equals 83.33 Amps at an industrial power factor of 0.85 (or 83.33 Amps at unity power factor 1.0).

What size breaker and wire is needed for 20 kVA at 240V?

For 83.33A continuous load, NEC requires a 125% rated breaker of 110A with 4 AWG copper conductors, while IEC standard sizing uses a 90A breaker with 25 mm² copper cable.

Other Power Ratings & Voltages

5 kVA at 240V (1P)10 kVA at 240V (1P)15 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)20 kVA at 120V Single-Phase AC20 kVA at 208V Single-Phase AC20 kVA at 230V Single-Phase AC (IEC)20 kVA at 208V Three-Phase AC20 kVA at 230V Three-Phase AC20 kVA at 400V Three-Phase AC (IEC Europe)20 kVA at 415V Three-Phase AC (UK / AU)20 kVA at 480V Three-Phase AC (US Industrial)20 kVA at 600V Three-Phase AC (Canada / Heavy)20 kVA at 24V DC Direct Current20 kVA at 48V DC Battery / Telecom Bus