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

20 kVA to Amps at 120V Single-Phase AC

Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 20 kVA on a 120V Single-Phase AC circuit.

Line Current (0.85 PF)166.67 AAt 1.0 PF: 166.67 A
Active / Apparent Power17.0 kW20.0 kVA · 10.54 kVAR
Recommended Breaker225 A (NEC)175 A (IEC Nominal)
Recommended Copper Wire2/0 AWGIEC Metric: 70 mm²

Engineering Breakdown for 20 kVA at 120V

Input Rating20 kVA (120V Single-Phase AC)
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)166.67 Amps
Amperage at 1.00 Power Factor (Resistive Load)166.67 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 Breaker225 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)2/0 AWG (NEC) / 70 mm² (IEC)

Frequently Asked Questions

How many amps is 20 kVA at 120V (1-Phase)?

At 120V Single-Phase AC, 20 kVA equals 166.67 Amps at an industrial power factor of 0.85 (or 166.67 Amps at unity power factor 1.0).

What size breaker and wire is needed for 20 kVA at 120V?

For 166.67A continuous load, NEC requires a 125% rated breaker of 225A with 2/0 AWG copper conductors, while IEC standard sizing uses a 175A breaker with 70 mm² copper cable.

Other Power Ratings & Voltages

5 kVA at 120V (1P)10 kVA at 120V (1P)15 kVA at 120V (1P)25 kVA at 120V (1P)30 kVA at 120V (1P)45 kVA at 120V (1P)50 kVA at 120V (1P)75 kVA at 120V (1P)100 kVA at 120V (1P)150 kVA at 120V (1P)200 kVA at 120V (1P)250 kVA at 120V (1P)500 kVA at 120V (1P)20 kVA at 208V Single-Phase AC20 kVA at 230V Single-Phase AC (IEC)20 kVA at 240V Single-Phase AC (NEC)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