350 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 350 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)4× 400 mm²Drop: 1.12V (2.34%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.41V (15.44%)
Voltage at Load46.9 VLine Loss: 393.2 W
Max Power & Breaker16.8 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A 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 | 1198.4 V (2496.67%) | 0.0 V | 1976.8 V (4118.33%) | 419440.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 719.04 V (1498.0%) | 0.0 V | 1186.08 V (2471.0%) | 251664.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 449.4 V (936.25%) | 0.0 V | 741.3 V (1544.38%) | 157290.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 299.6 V (624.17%) | 0.0 V | 494.2 V (1029.58%) | 104860.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 179.76 V (374.5%) | 0.0 V | 296.52 V (617.75%) | 62916.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 112.35 V (234.06%) | 0.0 V | 185.32 V (386.09%) | 39322.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 71.9 V (149.8%) | 0.0 V | 118.61 V (247.1%) | 25166.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 51.36 V (107.0%) | 0.0 V | 84.72 V (176.5%) | 17976.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 35.95 V (74.9%) | 12.0 V | 59.3 V (123.55%) | 12583.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 25.68 V (53.5%) | 22.3 V | 42.36 V (88.25%) | 8988.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 18.92 V (39.42%) | 29.1 V | 31.21 V (65.03%) | 6622.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 14.98 V (31.21%) | 33.0 V | 24.71 V (51.48%) | 5243.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 11.98 V (24.97%) | 36.0 V | 19.77 V (41.18%) | 4194.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.72 V (20.24%) | 38.3 V | 16.03 V (33.39%) | 3400.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.49 V (15.6%) | 40.5 V | 12.35 V (25.74%) | 2621.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.99 V (12.48%) | 42.0 V | 9.88 V (20.59%) | 2097.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.49 V (9.36%) | 43.5 V | 7.41 V (15.44%) | 1572.9 W | Drop High |
FAQ — 350 Amp Cable Size at 120 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 350A at 120 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4× 400 mm² copper cable for 350A over 120m at 48V (voltage drop: 1.12V or 2.34%).
What is the power capacity of 350A at 48V?
At unity power factor, 350A at 48V supports 16.8 kW with a standard 350A circuit breaker.
Related Lengths & Currents (48V)
350A · 5m (48V)350A · 10m (48V)350A · 15m (48V)350A · 20m (48V)350A · 25m (48V)350A · 30m (48V)350A · 35m (48V)350A · 40m (48V)350A · 45m (48V)350A · 50m (48V)350A · 60m (48V)350A · 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)