125 Amp Cable Size at 175 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 125 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)4× 400 mm²Drop: 0.58V (2.44%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.86V (16.09%)
Voltage at Load23.4 VLine Loss: 73.2 W
Max Power & Breaker3.0 kW125A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 125A at 175m
| 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 | 624.17 V (2600.69%) | 0.0 V | 1029.58 V (4289.93%) | 78020.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 374.5 V (1560.42%) | 0.0 V | 617.75 V (2573.96%) | 46812.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 234.06 V (975.26%) | 0.0 V | 386.09 V (1608.72%) | 29257.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 156.04 V (650.17%) | 0.0 V | 257.4 V (1072.48%) | 19505.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 93.62 V (390.1%) | 0.0 V | 154.44 V (643.49%) | 11703.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 58.52 V (243.82%) | 0.0 V | 96.52 V (402.18%) | 7314.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 37.45 V (156.04%) | 0.0 V | 61.77 V (257.4%) | 4681.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 26.75 V (111.46%) | 0.0 V | 44.12 V (183.85%) | 3343.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 18.72 V (78.02%) | 5.3 V | 30.89 V (128.7%) | 2340.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 13.37 V (55.73%) | 10.6 V | 22.06 V (91.93%) | 1671.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 9.86 V (41.06%) | 14.1 V | 16.26 V (67.74%) | 1231.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 7.8 V (32.51%) | 16.2 V | 12.87 V (53.62%) | 975.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 6.24 V (26.01%) | 17.8 V | 10.3 V (42.9%) | 780.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 5.06 V (21.09%) | 18.9 V | 8.35 V (34.78%) | 632.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.9 V (16.25%) | 20.1 V | 6.43 V (26.81%) | 487.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.12 V (13.0%) | 20.9 V | 5.15 V (21.45%) | 390.1 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.34 V (9.75%) | 21.7 V | 3.86 V (16.09%) | 292.6 W | Drop High |
FAQ — 125 Amp Cable Size at 175 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 125A at 175 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4× 400 mm² copper cable for 125A over 175m at 24V (voltage drop: 0.58V or 2.44%).
What is the power capacity of 125A at 24V?
At unity power factor, 125A at 24V supports 3.0 kW with a standard 125A circuit breaker.
Related Lengths & Currents (24V)
125A · 5m (24V)125A · 10m (24V)125A · 15m (24V)125A · 20m (24V)125A · 25m (24V)125A · 30m (24V)125A · 35m (24V)125A · 40m (24V)125A · 45m (24V)125A · 50m (24V)125A · 60m (24V)125A · 70m (24V)10A · 175m (24V)16A · 175m (24V)20A · 175m (24V)25A · 175m (24V)32A · 175m (24V)40A · 175m (24V)50A · 175m (24V)63A · 175m (24V)80A · 175m (24V)100A · 175m (24V)160A · 175m (24V)200A · 175m (24V)