78 kW to Amps at 48V DC Battery / Telecom Bus
Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 78 kW on a 48V DC Battery / Telecom Bus circuit.
Line Current (0.85 PF)1625.0 AAt 1.0 PF: 1625.0 A
Active / Apparent Power78.0 kW78.0 kVA · 0.0 kVAR
Recommended Breaker2500 A (NEC)2000 A (IEC Nominal)
Recommended Copper Wire3× 1000 kcmil (Parallel)IEC Metric: 3× 400 mm²
Engineering Breakdown for 78 kW at 48V
| Input Rating | 78 kW (48V DC Battery / Telecom Bus) |
| Amperage at 0.85 Power Factor (Industrial Motor/Transformer) | 1625.0 Amps |
| Amperage at 1.00 Power Factor (Resistive Load) | 1625.0 Amps |
| Real Power (kW / Watts) | 78.0 kW (78,000 W) |
| Apparent Power (kVA) & Reactive Power (kVAR) | 78.0 kVA / 0.0 kVAR |
| Equivalent Mechanical Horsepower (HP) | 104.6 HP |
| NEC 125% Continuous Circuit Breaker | 2500 A |
| Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop) | 3× 1000 kcmil (Parallel) (NEC) / 3× 400 mm² (IEC) |
Frequently Asked Questions
How many amps is 78 kW at 48V (1-Phase)?
At 48V DC Battery / Telecom Bus, 78 kW equals 1625.0 Amps at an industrial power factor of 1.0 (or 1625.0 Amps at unity power factor 1.0).
What size breaker and wire is needed for 78 kW at 48V?
For 1625.0A continuous load, NEC requires a 125% rated breaker of 2500A with 3× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 2000A breaker with 3× 400 mm² copper cable.
Other Power Ratings & Voltages
5 kW at 48V (1P)10 kW at 48V (1P)15 kW at 48V (1P)20 kW at 48V (1P)25 kW at 48V (1P)30 kW at 48V (1P)45 kW at 48V (1P)50 kW at 48V (1P)75 kW at 48V (1P)100 kW at 48V (1P)150 kW at 48V (1P)200 kW at 48V (1P)250 kW at 48V (1P)500 kW at 48V (1P)78 kW at 120V Single-Phase AC78 kW at 208V Single-Phase AC78 kW at 230V Single-Phase AC (IEC)78 kW at 240V Single-Phase AC (NEC)78 kW at 208V Three-Phase AC78 kW at 230V Three-Phase AC78 kW at 400V Three-Phase AC (IEC Europe)78 kW at 415V Three-Phase AC (UK / AU)78 kW at 480V Three-Phase AC (US Industrial)78 kW at 600V Three-Phase AC (Canada / Heavy)78 kW at 24V DC Direct Current