900 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 900 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)5× 400 mm²Drop: 1.35V (2.81%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.12V (23.17%)
Voltage at Load46.6 VLine Loss: 1213.4 W
Max Power & Breaker43.2 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 70m
| 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 | 1797.6 V (3745.0%) | 0.0 V | 2965.2 V (6177.5%) | 1617840.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1078.56 V (2247.0%) | 0.0 V | 1779.12 V (3706.5%) | 970704.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 674.1 V (1404.38%) | 0.0 V | 1111.95 V (2316.56%) | 606690.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 449.4 V (936.25%) | 0.0 V | 741.3 V (1544.38%) | 404460.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 269.64 V (561.75%) | 0.0 V | 444.78 V (926.63%) | 242676.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 168.53 V (351.09%) | 0.0 V | 277.99 V (579.14%) | 151672.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 107.86 V (224.7%) | 0.0 V | 177.91 V (370.65%) | 97070.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 77.04 V (160.5%) | 0.0 V | 127.08 V (264.75%) | 69336.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 53.93 V (112.35%) | 0.0 V | 88.96 V (185.33%) | 48535.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 38.52 V (80.25%) | 9.5 V | 63.54 V (132.38%) | 34668.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 28.38 V (59.13%) | 19.6 V | 46.82 V (97.54%) | 25544.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 22.47 V (46.81%) | 25.5 V | 37.07 V (77.22%) | 20223.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 17.98 V (37.45%) | 30.0 V | 29.65 V (61.77%) | 16178.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 14.58 V (30.36%) | 33.4 V | 24.04 V (50.09%) | 13117.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 11.24 V (23.41%) | 36.8 V | 18.53 V (38.61%) | 10111.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 8.99 V (18.73%) | 39.0 V | 14.83 V (30.89%) | 8089.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 6.74 V (14.04%) | 41.3 V | 11.12 V (23.17%) | 6066.9 W | Drop High |
FAQ — 900 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 900A at 70 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 5× 400 mm² copper cable for 900A over 70m at 48V (voltage drop: 1.35V or 2.81%).
What is the power capacity of 900A at 48V?
At unity power factor, 900A at 48V supports 43.2 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (48V)
900A · 5m (48V)900A · 10m (48V)900A · 15m (48V)900A · 20m (48V)900A · 25m (48V)900A · 30m (48V)900A · 35m (48V)900A · 40m (48V)900A · 45m (48V)900A · 50m (48V)900A · 60m (48V)10A · 70m (48V)16A · 70m (48V)20A · 70m (48V)25A · 70m (48V)32A · 70m (48V)40A · 70m (48V)50A · 70m (48V)63A · 70m (48V)80A · 70m (48V)100A · 70m (48V)125A · 70m (48V)160A · 70m (48V)200A · 70m (48V)