175 Amp Cable Size at 70 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 175 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.66V (2.73%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.16V (9.01%)
Voltage at Load23.3 VLine Loss: 114.7 W
Max Power & Breaker4.2 kW175A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 175A 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 | 349.53 V (1456.39%) | 0.0 V | 576.57 V (2402.36%) | 61168.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 209.72 V (873.83%) | 0.0 V | 345.94 V (1441.42%) | 36701.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 131.07 V (546.15%) | 0.0 V | 216.21 V (900.89%) | 22938.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 87.38 V (364.1%) | 0.0 V | 144.14 V (600.59%) | 15292.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 52.43 V (218.46%) | 0.0 V | 86.48 V (360.35%) | 9175.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 32.77 V (136.54%) | 0.0 V | 54.05 V (225.22%) | 5734.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 20.97 V (87.38%) | 3.0 V | 34.59 V (144.14%) | 3670.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 14.98 V (62.42%) | 9.0 V | 24.71 V (102.96%) | 2621.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 10.49 V (43.69%) | 13.5 V | 17.3 V (72.07%) | 1835.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 7.49 V (31.21%) | 16.5 V | 12.35 V (51.48%) | 1310.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 5.52 V (23.0%) | 18.5 V | 9.1 V (37.93%) | 965.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 4.37 V (18.2%) | 19.6 V | 7.21 V (30.03%) | 764.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.5 V (14.56%) | 20.5 V | 5.77 V (24.02%) | 611.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.83 V (11.81%) | 21.2 V | 4.67 V (19.48%) | 496.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 2.18 V (9.1%) | 21.8 V | 3.6 V (15.01%) | 382.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 1.75 V (7.28%) | 22.3 V | 2.88 V (12.01%) | 305.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 1.31 V (5.46%) | 22.7 V | 2.16 V (9.01%) | 229.4 W | Drop High |
FAQ — 175 Amp Cable Size at 70 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 175A at 70 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 175A over 70m at 24V (voltage drop: 0.66V or 2.73%).
What is the power capacity of 175A at 24V?
At unity power factor, 175A at 24V supports 4.2 kW with a standard 175A circuit breaker.
Related Lengths & Currents (24V)
175A · 5m (24V)175A · 10m (24V)175A · 15m (24V)175A · 20m (24V)175A · 25m (24V)175A · 30m (24V)175A · 35m (24V)175A · 40m (24V)175A · 45m (24V)175A · 50m (24V)175A · 60m (24V)10A · 70m (24V)16A · 70m (24V)20A · 70m (24V)25A · 70m (24V)32A · 70m (24V)40A · 70m (24V)50A · 70m (24V)63A · 70m (24V)80A · 70m (24V)100A · 70m (24V)125A · 70m (24V)160A · 70m (24V)200A · 70m (24V)