250 Amp Cable Size at 350 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 250 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)7× 400 mm²Drop: 1.34V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 15.44V (32.17%)
Voltage at Load46.7 VLine Loss: 334.4 W
Max Power & Breaker12.0 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 350m
| 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 | 2496.67 V (5201.39%) | 0.0 V | 4118.33 V (8579.86%) | 624166.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1498.0 V (3120.83%) | 0.0 V | 2471.0 V (5147.92%) | 374500.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 936.25 V (1950.52%) | 0.0 V | 1544.37 V (3217.45%) | 234062.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 624.17 V (1300.35%) | 0.0 V | 1029.58 V (2144.97%) | 156041.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 374.5 V (780.21%) | 0.0 V | 617.75 V (1286.98%) | 93625.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 234.06 V (487.63%) | 0.0 V | 386.09 V (804.36%) | 58515.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 149.8 V (312.08%) | 0.0 V | 247.1 V (514.79%) | 37450.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 107.0 V (222.92%) | 0.0 V | 176.5 V (367.71%) | 26750.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 74.9 V (156.04%) | 0.0 V | 123.55 V (257.4%) | 18725.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 53.5 V (111.46%) | 0.0 V | 88.25 V (183.85%) | 13375.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 39.42 V (82.13%) | 8.6 V | 65.03 V (135.47%) | 9855.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 31.21 V (65.02%) | 16.8 V | 51.48 V (107.25%) | 7802.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 24.97 V (52.01%) | 23.0 V | 41.18 V (85.8%) | 6241.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 20.24 V (42.17%) | 27.8 V | 33.39 V (69.57%) | 5060.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 15.6 V (32.51%) | 32.4 V | 25.74 V (53.62%) | 3901.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 12.48 V (26.01%) | 35.5 V | 20.59 V (42.9%) | 3120.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 9.36 V (19.51%) | 38.6 V | 15.44 V (32.17%) | 2340.6 W | Drop High |
FAQ — 250 Amp Cable Size at 350 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 250A at 350 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 250A over 350m at 48V (voltage drop: 1.34V or 2.79%).
What is the power capacity of 250A at 48V?
At unity power factor, 250A at 48V supports 12.0 kW with a standard 250A circuit breaker.
Related Lengths & Currents (48V)
250A · 5m (48V)250A · 10m (48V)250A · 15m (48V)250A · 20m (48V)250A · 25m (48V)250A · 30m (48V)250A · 35m (48V)250A · 40m (48V)250A · 45m (48V)250A · 50m (48V)250A · 60m (48V)250A · 70m (48V)10A · 350m (48V)16A · 350m (48V)20A · 350m (48V)25A · 350m (48V)32A · 350m (48V)40A · 350m (48V)50A · 350m (48V)63A · 350m (48V)80A · 350m (48V)100A · 350m (48V)125A · 350m (48V)160A · 350m (48V)200A · 350m (48V)