400 Amp Cable Size at 50 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 400 A over 50 m (164.0 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.07V (2.23%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.53V (7.35%)
Voltage at Load46.9 VLine Loss: 428.0 W
Max Power & Breaker19.2 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 400A at 50m
| 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 | 570.67 V (1188.89%) | 0.0 V | 941.33 V (1961.11%) | 228266.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 342.4 V (713.33%) | 0.0 V | 564.8 V (1176.67%) | 136960.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 214.0 V (445.83%) | 0.0 V | 353.0 V (735.42%) | 85600.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 142.67 V (297.22%) | 0.0 V | 235.33 V (490.28%) | 57066.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 85.6 V (178.33%) | 0.0 V | 141.2 V (294.17%) | 34240.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 53.5 V (111.46%) | 0.0 V | 88.25 V (183.85%) | 21400.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 34.24 V (71.33%) | 13.8 V | 56.48 V (117.67%) | 13696.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 24.46 V (50.95%) | 23.5 V | 40.34 V (84.05%) | 9782.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 17.12 V (35.67%) | 30.9 V | 28.24 V (58.83%) | 6848.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 12.23 V (25.48%) | 35.8 V | 20.17 V (42.02%) | 4891.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 9.01 V (18.77%) | 39.0 V | 14.86 V (30.96%) | 3604.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 7.13 V (14.86%) | 40.9 V | 11.77 V (24.51%) | 2853.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.71 V (11.89%) | 42.3 V | 9.41 V (19.61%) | 2282.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.63 V (9.64%) | 43.4 V | 7.63 V (15.9%) | 1850.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.57 V (7.43%) | 44.4 V | 5.88 V (12.26%) | 1426.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.85 V (5.94%) | 45.1 V | 4.71 V (9.81%) | 1141.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.14 V (4.46%) | 45.9 V | 3.53 V (7.35%) | 856.0 W | ~ ≤5% |
FAQ — 400 Amp Cable Size at 50 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 400A at 50 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 400A over 50m at 48V (voltage drop: 1.07V or 2.23%).
What is the power capacity of 400A at 48V?
At unity power factor, 400A at 48V supports 19.2 kW with a standard 400A circuit breaker.
Related Lengths & Currents (48V)
400A · 5m (48V)400A · 10m (48V)400A · 15m (48V)400A · 20m (48V)400A · 25m (48V)400A · 30m (48V)400A · 35m (48V)400A · 40m (48V)400A · 45m (48V)400A · 60m (48V)400A · 70m (48V)10A · 50m (48V)16A · 50m (48V)20A · 50m (48V)25A · 50m (48V)32A · 50m (48V)40A · 50m (48V)50A · 50m (48V)63A · 50m (48V)80A · 50m (48V)100A · 50m (48V)125A · 50m (48V)160A · 50m (48V)200A · 50m (48V)