700 Amp Cable Size at 400 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 700 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)21× 400 mm²Drop: 1.43V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 49.42V (102.96%)
Voltage at Load46.6 VLine Loss: 998.7 W
Max Power & Breaker33.6 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 700A at 400m
| 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 | 7989.33 V (16644.44%) | 0.0 V | 13178.67 V (27455.56%) | 5592533.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 4793.6 V (9986.67%) | 0.0 V | 7907.2 V (16473.33%) | 3355520.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2996.0 V (6241.67%) | 0.0 V | 4942.0 V (10295.83%) | 2097200.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1997.33 V (4161.11%) | 0.0 V | 3294.67 V (6863.89%) | 1398133.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 1198.4 V (2496.67%) | 0.0 V | 1976.8 V (4118.33%) | 838880.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 749.0 V (1560.42%) | 0.0 V | 1235.5 V (2573.96%) | 524300.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 479.36 V (998.67%) | 0.0 V | 790.72 V (1647.33%) | 335552.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 342.4 V (713.33%) | 0.0 V | 564.8 V (1176.67%) | 239680.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 239.68 V (499.33%) | 0.0 V | 395.36 V (823.67%) | 167776.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 171.2 V (356.67%) | 0.0 V | 282.4 V (588.33%) | 119840.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 126.15 V (262.81%) | 0.0 V | 208.08 V (433.51%) | 88303.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 99.87 V (208.06%) | 0.0 V | 164.73 V (343.19%) | 69906.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 79.89 V (166.44%) | 0.0 V | 131.79 V (274.56%) | 55925.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 64.78 V (134.95%) | 0.0 V | 106.85 V (222.61%) | 45344.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 49.93 V (104.03%) | 0.0 V | 82.37 V (171.6%) | 34953.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 39.95 V (83.22%) | 8.1 V | 65.89 V (137.28%) | 27962.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 29.96 V (62.42%) | 18.0 V | 49.42 V (102.96%) | 20972.0 W | Drop High |
FAQ — 700 Amp Cable Size at 400 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 700A at 400 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 21× 400 mm² copper cable for 700A over 400m at 48V (voltage drop: 1.43V or 2.97%).
What is the power capacity of 700A at 48V?
At unity power factor, 700A at 48V supports 33.6 kW with a standard 700A circuit breaker.
Related Lengths & Currents (48V)
700A · 5m (48V)700A · 10m (48V)700A · 15m (48V)700A · 20m (48V)700A · 25m (48V)700A · 30m (48V)700A · 35m (48V)700A · 40m (48V)700A · 45m (48V)700A · 50m (48V)700A · 60m (48V)700A · 70m (48V)10A · 400m (48V)16A · 400m (48V)20A · 400m (48V)25A · 400m (48V)32A · 400m (48V)40A · 400m (48V)50A · 400m (48V)63A · 400m (48V)80A · 400m (48V)100A · 400m (48V)125A · 400m (48V)160A · 400m (48V)200A · 400m (48V)