425 Amp Cable Size at 15 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 0.91V (1.89%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.13V (2.34%)
Voltage at Load47.1 VLine Loss: 386.5 W
Max Power & Breaker20.4 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 15m
| Cross-Section (mm²) | Cu Ampacity | Al Ampacity | Cu Voltage Drop | Load Voltage | Al Voltage Drop | Power Loss | Status |
|---|---|---|---|---|---|---|---|
| 1.5 mm² | 16 A | 12 A | 181.9 V (378.96%) | 0.0 V | 300.05 V (625.1%) | 77307.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 109.14 V (227.38%) | 0.0 V | 180.03 V (375.06%) | 46384.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 68.21 V (142.11%) | 0.0 V | 112.52 V (234.41%) | 28990.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 45.48 V (94.74%) | 2.5 V | 75.01 V (156.28%) | 19326.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 27.29 V (56.84%) | 20.7 V | 45.01 V (93.77%) | 11596.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.05 V (35.53%) | 30.9 V | 28.13 V (58.6%) | 7247.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.91 V (22.74%) | 37.1 V | 18.0 V (37.51%) | 4638.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.8 V (16.24%) | 40.2 V | 12.86 V (26.79%) | 3313.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.46 V (11.37%) | 42.5 V | 9.0 V (18.75%) | 2319.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.9 V (8.12%) | 44.1 V | 6.43 V (13.4%) | 1656.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.87 V (5.98%) | 45.1 V | 4.74 V (9.87%) | 1220.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.27 V (4.74%) | 45.7 V | 3.75 V (7.81%) | 966.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.82 V (3.79%) | 46.2 V | 3.0 V (6.25%) | 773.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.47 V (3.07%) | 46.5 V | 2.43 V (5.07%) | 626.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.14 V (2.37%) | 46.9 V | 1.88 V (3.91%) | 483.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.91 V (1.89%) | 47.1 V | 1.5 V (3.13%) | 386.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.68 V (1.42%) | 47.3 V | 1.13 V (2.34%) | 289.9 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 15 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 425A at 15 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 425A over 15m at 48V (voltage drop: 0.91V or 1.89%).
What is the power capacity of 425A at 48V?
At unity power factor, 425A at 48V supports 20.4 kW with a standard 450A circuit breaker.
Related Lengths & Currents (48V)
425A · 5m (48V)425A · 10m (48V)425A · 20m (48V)425A · 25m (48V)425A · 30m (48V)425A · 35m (48V)425A · 40m (48V)425A · 45m (48V)425A · 50m (48V)425A · 60m (48V)425A · 70m (48V)10A · 15m (48V)16A · 15m (48V)20A · 15m (48V)25A · 15m (48V)32A · 15m (48V)40A · 15m (48V)50A · 15m (48V)63A · 15m (48V)80A · 15m (48V)100A · 15m (48V)125A · 15m (48V)160A · 15m (48V)200A · 15m (48V)