550 Amp Cable Size at 120 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 120 m (393.7 ft).
Copper Cable (≤3% Drop)5× 400 mm²Drop: 1.41V (2.94%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.65V (24.27%)
Voltage at Load46.6 VLine Loss: 776.8 W
Max Power & Breaker26.4 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 120m
| 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 | 1883.2 V (3923.33%) | 0.0 V | 3106.4 V (6471.67%) | 1035760.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1129.92 V (2354.0%) | 0.0 V | 1863.84 V (3883.0%) | 621456.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 706.2 V (1471.25%) | 0.0 V | 1164.9 V (2426.87%) | 388410.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 470.8 V (980.83%) | 0.0 V | 776.6 V (1617.92%) | 258940.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 282.48 V (588.5%) | 0.0 V | 465.96 V (970.75%) | 155364.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 176.55 V (367.81%) | 0.0 V | 291.22 V (606.72%) | 97102.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 112.99 V (235.4%) | 0.0 V | 186.38 V (388.3%) | 62145.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 80.71 V (168.14%) | 0.0 V | 133.13 V (277.36%) | 44389.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 56.5 V (117.7%) | 0.0 V | 93.19 V (194.15%) | 31072.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 40.35 V (84.07%) | 7.6 V | 66.57 V (138.68%) | 22194.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 29.73 V (61.95%) | 18.3 V | 49.05 V (102.18%) | 16354.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 23.54 V (49.04%) | 24.5 V | 38.83 V (80.9%) | 12947.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 18.83 V (39.23%) | 29.2 V | 31.06 V (64.72%) | 10357.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 15.27 V (31.81%) | 32.7 V | 25.19 V (52.47%) | 8398.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 11.77 V (24.52%) | 36.2 V | 19.41 V (40.45%) | 6473.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 9.42 V (19.62%) | 38.6 V | 15.53 V (32.36%) | 5178.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 7.06 V (14.71%) | 40.9 V | 11.65 V (24.27%) | 3884.1 W | Drop High |
FAQ — 550 Amp Cable Size at 120 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 550A at 120 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 5× 400 mm² copper cable for 550A over 120m at 48V (voltage drop: 1.41V or 2.94%).
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)550A · 70m (48V)10A · 120m (48V)16A · 120m (48V)20A · 120m (48V)25A · 120m (48V)32A · 120m (48V)40A · 120m (48V)50A · 120m (48V)63A · 120m (48V)80A · 120m (48V)100A · 120m (48V)125A · 120m (48V)160A · 120m (48V)200A · 120m (48V)