750 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 750 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)14× 400 mm²Drop: 1.43V (2.99%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 33.09V (68.95%)
Voltage at Load46.6 VLine Loss: 1074.8 W
Max Power & Breaker36.0 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A 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 | 5350.0 V (11145.83%) | 0.0 V | 8825.0 V (18385.42%) | 4012500.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3210.0 V (6687.5%) | 0.0 V | 5295.0 V (11031.25%) | 2407500.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2006.25 V (4179.69%) | 0.0 V | 3309.37 V (6894.53%) | 1504687.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 1337.5 V (2786.46%) | 0.0 V | 2206.25 V (4596.35%) | 1003125.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 802.5 V (1671.87%) | 0.0 V | 1323.75 V (2757.81%) | 601875.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 501.56 V (1044.92%) | 0.0 V | 827.34 V (1723.63%) | 376171.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 321.0 V (668.75%) | 0.0 V | 529.5 V (1103.12%) | 240750.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 229.29 V (477.68%) | 0.0 V | 378.21 V (787.95%) | 171964.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 160.5 V (334.38%) | 0.0 V | 264.75 V (551.56%) | 120375.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 114.64 V (238.84%) | 0.0 V | 189.11 V (393.97%) | 85982.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 84.47 V (175.99%) | 0.0 V | 139.34 V (290.3%) | 63355.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 66.88 V (139.32%) | 0.0 V | 110.31 V (229.82%) | 50156.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 53.5 V (111.46%) | 0.0 V | 88.25 V (183.85%) | 40125.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 43.38 V (90.37%) | 4.6 V | 71.55 V (149.07%) | 32533.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 33.44 V (69.66%) | 14.6 V | 55.16 V (114.91%) | 25078.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 26.75 V (55.73%) | 21.2 V | 44.12 V (91.93%) | 20062.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 20.06 V (41.8%) | 27.9 V | 33.09 V (68.95%) | 15046.9 W | Drop High |
FAQ — 750 Amp Cable Size at 250 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 750A at 250 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 14× 400 mm² copper cable for 750A over 250m at 48V (voltage drop: 1.43V or 2.99%).
What is the power capacity of 750A at 48V?
At unity power factor, 750A at 48V supports 36.0 kW with a standard 800A circuit breaker.
Related Lengths & Currents (48V)
750A · 5m (48V)750A · 10m (48V)750A · 15m (48V)750A · 20m (48V)750A · 25m (48V)750A · 30m (48V)750A · 35m (48V)750A · 40m (48V)750A · 45m (48V)750A · 50m (48V)750A · 60m (48V)750A · 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)100A · 250m (48V)125A · 250m (48V)160A · 250m (48V)200A · 250m (48V)