325 Amp Cable Size at 35 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 35 m (114.8 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.61V (2.54%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.01V (8.37%)
Voltage at Load23.4 VLine Loss: 197.8 W
Max Power & Breaker7.8 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 35m
| 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 | 324.57 V (1352.36%) | 0.0 V | 535.38 V (2230.76%) | 105484.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 194.74 V (811.42%) | 0.0 V | 321.23 V (1338.46%) | 63290.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 121.71 V (507.14%) | 0.0 V | 200.77 V (836.54%) | 39556.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 81.14 V (338.09%) | 0.0 V | 133.85 V (557.69%) | 26371.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 48.68 V (202.85%) | 0.0 V | 80.31 V (334.61%) | 15822.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 30.43 V (126.78%) | 0.0 V | 50.19 V (209.13%) | 9889.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 19.47 V (81.14%) | 4.5 V | 32.12 V (133.85%) | 6329.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 13.91 V (57.96%) | 10.1 V | 22.95 V (95.6%) | 4520.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 9.74 V (40.57%) | 14.3 V | 16.06 V (66.92%) | 3164.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 6.96 V (28.98%) | 17.0 V | 11.47 V (47.8%) | 2260.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 5.12 V (21.35%) | 18.9 V | 8.45 V (35.22%) | 1665.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 4.06 V (16.9%) | 19.9 V | 6.69 V (27.88%) | 1318.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.25 V (13.52%) | 20.8 V | 5.35 V (22.31%) | 1054.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.63 V (10.97%) | 21.4 V | 4.34 V (18.09%) | 855.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 2.03 V (8.45%) | 22.0 V | 3.35 V (13.94%) | 659.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 1.62 V (6.76%) | 22.4 V | 2.68 V (11.15%) | 527.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 1.22 V (5.07%) | 22.8 V | 2.01 V (8.37%) | 395.6 W | Drop High |
FAQ — 325 Amp Cable Size at 35 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 325A at 35 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 325A over 35m at 24V (voltage drop: 0.61V or 2.54%).
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 · 40m (24V)325A · 45m (24V)325A · 50m (24V)325A · 60m (24V)325A · 70m (24V)10A · 35m (24V)16A · 35m (24V)20A · 35m (24V)25A · 35m (24V)32A · 35m (24V)40A · 35m (24V)50A · 35m (24V)63A · 35m (24V)80A · 35m (24V)100A · 35m (24V)125A · 35m (24V)160A · 35m (24V)200A · 35m (24V)