325 Amp Cable Size at 90 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 90 m (295.3 ft).
Copper Cable (≤3% Drop)5× 400 mm²Drop: 0.63V (2.61%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 5.16V (21.51%)
Voltage at Load23.4 VLine Loss: 203.4 W
Max Power & Breaker7.8 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 90m
| 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 | 834.6 V (3477.5%) | 0.0 V | 1376.7 V (5736.25%) | 271245.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 500.76 V (2086.5%) | 0.0 V | 826.02 V (3441.75%) | 162747.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 312.97 V (1304.06%) | 0.0 V | 516.26 V (2151.09%) | 101716.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 208.65 V (869.38%) | 0.0 V | 344.17 V (1434.06%) | 67811.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 125.19 V (521.62%) | 0.0 V | 206.5 V (860.44%) | 40686.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 78.24 V (326.02%) | 0.0 V | 129.07 V (537.77%) | 25429.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 50.08 V (208.65%) | 0.0 V | 82.6 V (344.17%) | 16274.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 35.77 V (149.04%) | 0.0 V | 59.0 V (245.84%) | 11624.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 25.04 V (104.33%) | 0.0 V | 41.3 V (172.09%) | 8137.3 W | Drop High |
| 70 mm² | 192 A | 150 A | 17.88 V (74.52%) | 6.1 V | 29.5 V (122.92%) | 5812.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 13.18 V (54.91%) | 10.8 V | 21.74 V (90.57%) | 4282.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 10.43 V (43.47%) | 13.6 V | 17.21 V (71.7%) | 3390.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 8.35 V (34.77%) | 15.7 V | 13.77 V (57.36%) | 2712.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.77 V (28.2%) | 17.2 V | 11.16 V (46.51%) | 2199.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 5.22 V (21.73%) | 18.8 V | 8.6 V (35.85%) | 1695.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.17 V (17.39%) | 19.8 V | 6.88 V (28.68%) | 1356.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.13 V (13.04%) | 20.9 V | 5.16 V (21.51%) | 1017.2 W | Drop High |
FAQ — 325 Amp Cable Size at 90 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 325A at 90 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 5× 400 mm² copper cable for 325A over 90m at 24V (voltage drop: 0.63V or 2.61%).
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 · 90m (24V)16A · 90m (24V)20A · 90m (24V)25A · 90m (24V)32A · 90m (24V)40A · 90m (24V)50A · 90m (24V)63A · 90m (24V)80A · 90m (24V)100A · 90m (24V)125A · 90m (24V)160A · 90m (24V)200A · 90m (24V)