425 Amp Cable Size at 100 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 100 m (328.1 ft).
Copper Cable (≤3% Drop)7× 400 mm²Drop: 0.65V (2.71%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.5V (31.26%)
Voltage at Load23.4 VLine Loss: 276.1 W
Max Power & Breaker10.2 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 100m
| 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 | 1212.67 V (5052.78%) | 0.0 V | 2000.33 V (8334.72%) | 515383.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 727.6 V (3031.67%) | 0.0 V | 1200.2 V (5000.83%) | 309230.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 454.75 V (1894.79%) | 0.0 V | 750.12 V (3125.52%) | 193268.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 303.17 V (1263.19%) | 0.0 V | 500.08 V (2083.68%) | 128845.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 181.9 V (757.92%) | 0.0 V | 300.05 V (1250.21%) | 77307.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 113.69 V (473.7%) | 0.0 V | 187.53 V (781.38%) | 48317.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 72.76 V (303.17%) | 0.0 V | 120.02 V (500.08%) | 30923.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 51.97 V (216.55%) | 0.0 V | 85.73 V (357.2%) | 22087.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 36.38 V (151.58%) | 0.0 V | 60.01 V (250.04%) | 15461.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 25.99 V (108.27%) | 0.0 V | 42.86 V (178.6%) | 11043.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 19.15 V (79.78%) | 4.9 V | 31.58 V (131.6%) | 8137.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 15.16 V (63.16%) | 8.8 V | 25.0 V (104.18%) | 6442.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 12.13 V (50.53%) | 11.9 V | 20.0 V (83.35%) | 5153.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.83 V (40.97%) | 14.2 V | 16.22 V (67.58%) | 4178.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.58 V (31.58%) | 16.4 V | 12.5 V (52.09%) | 3221.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 6.06 V (25.26%) | 17.9 V | 10.0 V (41.67%) | 2576.9 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.55 V (18.95%) | 19.5 V | 7.5 V (31.26%) | 1932.7 W | Drop High |
FAQ — 425 Amp Cable Size at 100 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 100 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 425A over 100m at 24V (voltage drop: 0.65V or 2.71%).
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 · 100m (24V)16A · 100m (24V)20A · 100m (24V)25A · 100m (24V)32A · 100m (24V)40A · 100m (24V)50A · 100m (24V)63A · 100m (24V)80A · 100m (24V)100A · 100m (24V)125A · 100m (24V)160A · 100m (24V)200A · 100m (24V)