425 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)23× 400 mm²Drop: 0.69V (2.88%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 26.25V (109.39%)
Voltage at Load23.3 VLine Loss: 294.1 W
Max Power & Breaker10.2 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 350m
| 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 | 4244.33 V (17684.72%) | 0.0 V | 7001.17 V (29171.53%) | 1803841.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2546.6 V (10610.83%) | 0.0 V | 4200.7 V (17502.92%) | 1082305.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1591.62 V (6631.77%) | 0.0 V | 2625.44 V (10939.32%) | 676440.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 1061.08 V (4421.18%) | 0.0 V | 1750.29 V (7292.88%) | 450960.4 W | Drop High |
| 10 mm² | 57 A | 44 A | 636.65 V (2652.71%) | 0.0 V | 1050.17 V (4375.73%) | 270576.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 397.91 V (1657.94%) | 0.0 V | 656.36 V (2734.83%) | 169110.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 254.66 V (1061.08%) | 0.0 V | 420.07 V (1750.29%) | 108230.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 181.9 V (757.92%) | 0.0 V | 300.05 V (1250.21%) | 77307.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 127.33 V (530.54%) | 0.0 V | 210.03 V (875.15%) | 54115.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 90.95 V (378.96%) | 0.0 V | 150.03 V (625.1%) | 38653.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 67.02 V (279.23%) | 0.0 V | 110.54 V (460.6%) | 28481.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 53.05 V (221.06%) | 0.0 V | 87.51 V (364.64%) | 22548.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 42.44 V (176.85%) | 0.0 V | 70.01 V (291.72%) | 18038.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 34.41 V (143.39%) | 0.0 V | 56.77 V (236.53%) | 14625.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 26.53 V (110.53%) | 0.0 V | 43.76 V (182.32%) | 11274.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 21.22 V (88.42%) | 2.8 V | 35.01 V (145.86%) | 9019.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 15.92 V (66.32%) | 8.1 V | 26.25 V (109.39%) | 6764.4 W | Drop High |
FAQ — 425 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 350 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 23× 400 mm² copper cable for 425A over 350m at 24V (voltage drop: 0.69V or 2.88%).
What is the power capacity of 425A at 24V?
At unity power factor, 425A at 24V supports 10.2 kW with a standard 450A circuit breaker.
Related Lengths & Currents (24V)
425A · 5m (24V)425A · 10m (24V)425A · 15m (24V)425A · 20m (24V)425A · 25m (24V)425A · 30m (24V)425A · 35m (24V)425A · 40m (24V)425A · 45m (24V)425A · 50m (24V)425A · 60m (24V)425A · 70m (24V)10A · 350m (24V)16A · 350m (24V)20A · 350m (24V)25A · 350m (24V)32A · 350m (24V)40A · 350m (24V)50A · 350m (24V)63A · 350m (24V)80A · 350m (24V)100A · 350m (24V)125A · 350m (24V)160A · 350m (24V)200A · 350m (24V)