325 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 325 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)9× 400 mm²Drop: 0.68V (2.82%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 10.04V (41.83%)
Voltage at Load23.3 VLine Loss: 219.8 W
Max Power & Breaker7.8 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A 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 | 1622.83 V (6761.81%) | 0.0 V | 2676.92 V (11153.82%) | 527420.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 973.7 V (4057.08%) | 0.0 V | 1606.15 V (6692.29%) | 316452.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 608.56 V (2535.68%) | 0.0 V | 1003.84 V (4182.68%) | 197782.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 405.71 V (1690.45%) | 0.0 V | 669.23 V (2788.45%) | 131855.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 243.42 V (1014.27%) | 0.0 V | 401.54 V (1673.07%) | 79113.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 152.14 V (633.92%) | 0.0 V | 250.96 V (1045.67%) | 49445.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 97.37 V (405.71%) | 0.0 V | 160.61 V (669.23%) | 31645.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 69.55 V (289.79%) | 0.0 V | 114.72 V (478.02%) | 22603.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 48.68 V (202.85%) | 0.0 V | 80.31 V (334.61%) | 15822.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 34.77 V (144.9%) | 0.0 V | 57.36 V (239.01%) | 11301.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 25.62 V (106.77%) | 0.0 V | 42.27 V (176.11%) | 8327.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 20.29 V (84.52%) | 3.7 V | 33.46 V (139.42%) | 6592.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 16.23 V (67.62%) | 7.8 V | 26.77 V (111.54%) | 5274.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 13.16 V (54.83%) | 10.8 V | 21.7 V (90.44%) | 4276.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 10.14 V (42.26%) | 13.9 V | 16.73 V (69.71%) | 3296.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 8.11 V (33.81%) | 15.9 V | 13.38 V (55.77%) | 2637.1 W | Drop High |
| 400 mm² | 570 A | 445 A | 6.09 V (25.36%) | 17.9 V | 10.04 V (41.83%) | 1977.8 W | Drop High |
FAQ — 325 Amp Cable Size at 175 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 325A at 175 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 9× 400 mm² copper cable for 325A over 175m at 24V (voltage drop: 0.68V or 2.82%).
What is the power capacity of 325A at 24V?
At unity power factor, 325A at 24V supports 7.8 kW with a standard 350A circuit breaker.
Related Lengths & Currents (24V)
325A · 5m (24V)325A · 10m (24V)325A · 15m (24V)325A · 20m (24V)325A · 25m (24V)325A · 30m (24V)325A · 35m (24V)325A · 40m (24V)325A · 45m (24V)325A · 50m (24V)325A · 60m (24V)325A · 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)125A · 175m (24V)160A · 175m (24V)200A · 175m (24V)