425 Amp Cable Size at 45 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 45 m (147.6 ft).
Copper Cable (≤3% Drop)3× 400 mm²Drop: 0.68V (2.84%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.38V (14.06%)
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 45m
| 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 | 545.7 V (2273.75%) | 0.0 V | 900.15 V (3750.62%) | 231922.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 327.42 V (1364.25%) | 0.0 V | 540.09 V (2250.37%) | 139153.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 204.64 V (852.66%) | 0.0 V | 337.56 V (1406.48%) | 86970.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 136.43 V (568.44%) | 0.0 V | 225.04 V (937.66%) | 57980.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 81.86 V (341.06%) | 0.0 V | 135.02 V (562.59%) | 34788.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 51.16 V (213.16%) | 0.0 V | 84.39 V (351.62%) | 21742.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 32.74 V (136.42%) | 0.0 V | 54.01 V (225.04%) | 13915.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 23.39 V (97.45%) | 0.6 V | 38.58 V (160.74%) | 9939.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 16.37 V (68.21%) | 7.6 V | 27.0 V (112.52%) | 6957.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 11.69 V (48.72%) | 12.3 V | 19.29 V (80.37%) | 4969.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 8.62 V (35.9%) | 15.4 V | 14.21 V (59.22%) | 3661.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 6.82 V (28.42%) | 17.2 V | 11.25 V (46.88%) | 2899.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.46 V (22.74%) | 18.5 V | 9.0 V (37.51%) | 2319.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.42 V (18.44%) | 19.6 V | 7.3 V (30.41%) | 1880.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.41 V (14.21%) | 20.6 V | 5.63 V (23.44%) | 1449.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.73 V (11.37%) | 21.3 V | 4.5 V (18.75%) | 1159.6 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.05 V (8.53%) | 22.0 V | 3.38 V (14.06%) | 869.7 W | Drop High |
FAQ — 425 Amp Cable Size at 45 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 45 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 3× 400 mm² copper cable for 425A over 45m 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 · 50m (24V)425A · 60m (24V)425A · 70m (24V)10A · 45m (24V)16A · 45m (24V)20A · 45m (24V)25A · 45m (24V)32A · 45m (24V)40A · 45m (24V)50A · 45m (24V)63A · 45m (24V)80A · 45m (24V)100A · 45m (24V)125A · 45m (24V)160A · 45m (24V)200A · 45m (24V)