425 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 425 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)6× 400 mm²Drop: 0.68V (2.84%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.75V (28.13%)
Voltage at Load23.3 VLine Loss: 289.9 W
Max Power & Breaker10.2 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A 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 | 1091.4 V (4547.5%) | 0.0 V | 1800.3 V (7501.25%) | 463845.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 654.84 V (2728.5%) | 0.0 V | 1080.18 V (4500.75%) | 278307.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 409.27 V (1705.31%) | 0.0 V | 675.11 V (2812.97%) | 173941.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 272.85 V (1136.88%) | 0.0 V | 450.07 V (1875.31%) | 115961.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 163.71 V (682.12%) | 0.0 V | 270.04 V (1125.19%) | 69576.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 102.32 V (426.33%) | 0.0 V | 168.78 V (703.24%) | 43485.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 65.48 V (272.85%) | 0.0 V | 108.02 V (450.07%) | 27830.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 46.77 V (194.89%) | 0.0 V | 77.16 V (321.48%) | 19879.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 32.74 V (136.42%) | 0.0 V | 54.01 V (225.04%) | 13915.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 23.39 V (97.45%) | 0.6 V | 38.58 V (160.74%) | 9939.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 17.23 V (71.8%) | 6.8 V | 28.43 V (118.44%) | 7323.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.64 V (56.84%) | 10.4 V | 22.5 V (93.77%) | 5798.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.91 V (45.48%) | 13.1 V | 18.0 V (75.01%) | 4638.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.85 V (36.87%) | 15.2 V | 14.6 V (60.82%) | 3760.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.82 V (28.42%) | 17.2 V | 11.25 V (46.88%) | 2899.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.46 V (22.74%) | 18.5 V | 9.0 V (37.51%) | 2319.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.09 V (17.05%) | 19.9 V | 6.75 V (28.13%) | 1739.4 W | Drop High |
FAQ — 425 Amp Cable Size at 90 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 90 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6× 400 mm² copper cable for 425A over 90m at 24V (voltage drop: 0.68V or 2.84%).
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 · 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)