375 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 375 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)4× 400 mm²Drop: 0.7V (2.92%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.63V (19.3%)
Voltage at Load23.3 VLine Loss: 263.3 W
Max Power & Breaker9.0 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A 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 | 749.0 V (3120.83%) | 0.0 V | 1235.5 V (5147.92%) | 280875.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 449.4 V (1872.5%) | 0.0 V | 741.3 V (3088.75%) | 168525.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 280.88 V (1170.31%) | 0.0 V | 463.31 V (1930.47%) | 105328.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 187.25 V (780.21%) | 0.0 V | 308.88 V (1286.98%) | 70218.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 112.35 V (468.12%) | 0.0 V | 185.33 V (772.19%) | 42131.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 70.22 V (292.58%) | 0.0 V | 115.83 V (482.62%) | 26332.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 44.94 V (187.25%) | 0.0 V | 74.13 V (308.87%) | 16852.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 32.1 V (133.75%) | 0.0 V | 52.95 V (220.62%) | 12037.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 22.47 V (93.62%) | 1.5 V | 37.06 V (154.44%) | 8426.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 16.05 V (66.88%) | 7.9 V | 26.47 V (110.31%) | 6018.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 11.83 V (49.28%) | 12.2 V | 19.51 V (81.28%) | 4434.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 9.36 V (39.01%) | 14.6 V | 15.44 V (64.35%) | 3510.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 7.49 V (31.21%) | 16.5 V | 12.36 V (51.48%) | 2808.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.07 V (25.3%) | 17.9 V | 10.02 V (41.74%) | 2277.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.68 V (19.51%) | 19.3 V | 7.72 V (32.17%) | 1755.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.74 V (15.6%) | 20.3 V | 6.18 V (25.74%) | 1404.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.81 V (11.7%) | 21.2 V | 4.63 V (19.3%) | 1053.3 W | Drop High |
FAQ — 375 Amp Cable Size at 70 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 375A at 70 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4× 400 mm² copper cable for 375A over 70m at 24V (voltage drop: 0.7V or 2.92%).
What is the power capacity of 375A at 24V?
At unity power factor, 375A at 24V supports 9.0 kW with a standard 400A circuit breaker.
Related Lengths & Currents (24V)
375A · 5m (24V)375A · 10m (24V)375A · 15m (24V)375A · 20m (24V)375A · 25m (24V)375A · 30m (24V)375A · 35m (24V)375A · 40m (24V)375A · 45m (24V)375A · 50m (24V)375A · 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)