550 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 550 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)3× 400 mm²Drop: 1.37V (2.86%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.8V (14.16%)
Voltage at Load46.6 VLine Loss: 755.2 W
Max Power & Breaker26.4 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A 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 | 1098.53 V (2288.61%) | 0.0 V | 1812.07 V (3775.14%) | 604193.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 659.12 V (1373.17%) | 0.0 V | 1087.24 V (2265.08%) | 362516.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 411.95 V (858.23%) | 0.0 V | 679.52 V (1415.68%) | 226572.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 274.63 V (572.15%) | 0.0 V | 453.02 V (943.78%) | 151048.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 164.78 V (343.29%) | 0.0 V | 271.81 V (566.27%) | 90629.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 102.99 V (214.56%) | 0.0 V | 169.88 V (353.92%) | 56643.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 65.91 V (137.32%) | 0.0 V | 108.72 V (226.51%) | 36251.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 47.08 V (98.08%) | 0.9 V | 77.66 V (161.79%) | 25894.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 32.96 V (68.66%) | 15.0 V | 54.36 V (113.25%) | 18125.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 23.54 V (49.04%) | 24.5 V | 38.83 V (80.9%) | 12947.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 17.35 V (36.14%) | 30.7 V | 28.61 V (59.61%) | 9539.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.73 V (28.61%) | 34.3 V | 22.65 V (47.19%) | 7552.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.99 V (22.89%) | 37.0 V | 18.12 V (37.75%) | 6041.9 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.91 V (18.56%) | 39.1 V | 14.69 V (30.61%) | 4898.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.87 V (14.3%) | 41.1 V | 11.33 V (23.59%) | 3776.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.49 V (11.44%) | 42.5 V | 9.06 V (18.88%) | 3021.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.12 V (8.58%) | 43.9 V | 6.8 V (14.16%) | 2265.7 W | Drop High |
FAQ — 550 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 550A 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 550A over 70m at 48V (voltage drop: 1.37V or 2.86%).
What is the power capacity of 550A at 48V?
At unity power factor, 550A at 48V supports 26.4 kW with a standard 600A circuit breaker.
Related Lengths & Currents (48V)
550A · 5m (48V)550A · 10m (48V)550A · 15m (48V)550A · 20m (48V)550A · 25m (48V)550A · 30m (48V)550A · 35m (48V)550A · 40m (48V)550A · 45m (48V)550A · 50m (48V)550A · 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)