500 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 500 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)3× 400 mm²Drop: 1.25V (2.6%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.18V (12.87%)
Voltage at Load46.8 VLine Loss: 624.2 W
Max Power & Breaker24.0 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 500A 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 | 998.67 V (2080.56%) | 0.0 V | 1647.33 V (3431.94%) | 499333.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 599.2 V (1248.33%) | 0.0 V | 988.4 V (2059.17%) | 299600.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 374.5 V (780.21%) | 0.0 V | 617.75 V (1286.98%) | 187250.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 249.67 V (520.14%) | 0.0 V | 411.83 V (857.99%) | 124833.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 149.8 V (312.08%) | 0.0 V | 247.1 V (514.79%) | 74900.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 93.62 V (195.05%) | 0.0 V | 154.44 V (321.74%) | 46812.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 59.92 V (124.83%) | 0.0 V | 98.84 V (205.92%) | 29960.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 42.8 V (89.17%) | 5.2 V | 70.6 V (147.08%) | 21400.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 29.96 V (62.42%) | 18.0 V | 49.42 V (102.96%) | 14980.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 21.4 V (44.58%) | 26.6 V | 35.3 V (73.54%) | 10700.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 15.77 V (32.85%) | 32.2 V | 26.01 V (54.19%) | 7884.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 12.48 V (26.01%) | 35.5 V | 20.59 V (42.9%) | 6241.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 9.99 V (20.81%) | 38.0 V | 16.47 V (34.32%) | 4993.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.1 V (16.87%) | 39.9 V | 13.36 V (27.83%) | 4048.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.24 V (13.0%) | 41.8 V | 10.3 V (21.45%) | 3120.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.99 V (10.4%) | 43.0 V | 8.24 V (17.16%) | 2496.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.75 V (7.8%) | 44.3 V | 6.18 V (12.87%) | 1872.5 W | Drop High |
FAQ — 500 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 500A at 70 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 3× 400 mm² copper cable for 500A over 70m at 48V (voltage drop: 1.25V or 2.6%).
What is the power capacity of 500A at 48V?
At unity power factor, 500A at 48V supports 24.0 kW with a standard 500A circuit breaker.
Related Lengths & Currents (48V)
500A · 5m (48V)500A · 10m (48V)500A · 15m (48V)500A · 20m (48V)500A · 25m (48V)500A · 30m (48V)500A · 35m (48V)500A · 40m (48V)500A · 45m (48V)500A · 50m (48V)500A · 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)