100 Amp Cable Size at 250 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 100 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.33V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.41V (9.19%)
Voltage at Load46.7 VLine Loss: 133.8 W
Max Power & Breaker4.8 kW100A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 100A at 250m
| 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 | 713.33 V (1486.11%) | 0.0 V | 1176.67 V (2451.39%) | 71333.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 428.0 V (891.67%) | 0.0 V | 706.0 V (1470.83%) | 42800.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 267.5 V (557.29%) | 0.0 V | 441.25 V (919.27%) | 26750.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 178.33 V (371.53%) | 0.0 V | 294.17 V (612.85%) | 17833.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 107.0 V (222.92%) | 0.0 V | 176.5 V (367.71%) | 10700.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 66.88 V (139.32%) | 0.0 V | 110.31 V (229.82%) | 6687.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 42.8 V (89.17%) | 5.2 V | 70.6 V (147.08%) | 4280.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 30.57 V (63.69%) | 17.4 V | 50.43 V (105.06%) | 3057.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 21.4 V (44.58%) | 26.6 V | 35.3 V (73.54%) | 2140.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 15.29 V (31.85%) | 32.7 V | 25.21 V (52.53%) | 1528.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 11.26 V (23.46%) | 36.7 V | 18.58 V (38.71%) | 1126.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 8.92 V (18.58%) | 39.1 V | 14.71 V (30.64%) | 891.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 7.13 V (14.86%) | 40.9 V | 11.77 V (24.51%) | 713.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 5.78 V (12.05%) | 42.2 V | 9.54 V (19.88%) | 578.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.46 V (9.29%) | 43.5 V | 7.35 V (15.32%) | 445.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.57 V (7.43%) | 44.4 V | 5.88 V (12.26%) | 356.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.67 V (5.57%) | 45.3 V | 4.41 V (9.19%) | 267.5 W | Drop High |
FAQ — 100 Amp Cable Size at 250 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 100A at 250 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 100A over 250m at 48V (voltage drop: 1.33V or 2.79%).
What is the power capacity of 100A at 48V?
At unity power factor, 100A at 48V supports 4.8 kW with a standard 100A circuit breaker.
Related Lengths & Currents (48V)
100A · 5m (48V)100A · 10m (48V)100A · 15m (48V)100A · 20m (48V)100A · 25m (48V)100A · 30m (48V)100A · 35m (48V)100A · 40m (48V)100A · 45m (48V)100A · 50m (48V)100A · 60m (48V)100A · 70m (48V)10A · 250m (48V)16A · 250m (48V)20A · 250m (48V)25A · 250m (48V)32A · 250m (48V)40A · 250m (48V)50A · 250m (48V)63A · 250m (48V)80A · 250m (48V)125A · 250m (48V)160A · 250m (48V)200A · 250m (48V)