425 Amp Cable Size at 500 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 500 m (1640.4 ft).
Copper Cable (≤3% Drop)32× 400 mm²Drop: 0.71V (2.96%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 37.51V (156.28%)
Voltage at Load23.3 VLine Loss: 302.0 W
Max Power & Breaker10.2 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 500m
| 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 | 6063.33 V (25263.89%) | 0.0 V | 10001.67 V (41673.61%) | 2576916.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3638.0 V (15158.33%) | 0.0 V | 6001.0 V (25004.17%) | 1546150.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2273.75 V (9473.96%) | 0.0 V | 3750.62 V (15627.6%) | 966343.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 1515.83 V (6315.97%) | 0.0 V | 2500.42 V (10418.4%) | 644229.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 909.5 V (3789.58%) | 0.0 V | 1500.25 V (6251.04%) | 386537.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 568.44 V (2368.49%) | 0.0 V | 937.66 V (3906.9%) | 241585.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 363.8 V (1515.83%) | 0.0 V | 600.1 V (2500.42%) | 154615.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 259.86 V (1082.74%) | 0.0 V | 428.64 V (1786.01%) | 110439.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 181.9 V (757.92%) | 0.0 V | 300.05 V (1250.21%) | 77307.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 129.93 V (541.37%) | 0.0 V | 214.32 V (893.01%) | 55219.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 95.74 V (398.9%) | 0.0 V | 157.92 V (658.0%) | 40688.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 75.79 V (315.8%) | 0.0 V | 125.02 V (520.92%) | 32211.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 60.63 V (252.64%) | 0.0 V | 100.02 V (416.74%) | 25769.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 49.16 V (204.84%) | 0.0 V | 81.09 V (337.89%) | 20893.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 37.9 V (157.9%) | 0.0 V | 62.51 V (260.46%) | 16105.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 30.32 V (126.32%) | 0.0 V | 50.01 V (208.37%) | 12884.6 W | Drop High |
| 400 mm² | 570 A | 445 A | 22.74 V (94.74%) | 1.3 V | 37.51 V (156.28%) | 9663.4 W | Drop High |
FAQ — 425 Amp Cable Size at 500 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 500 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 32× 400 mm² copper cable for 425A over 500m at 24V (voltage drop: 0.71V or 2.96%).
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 · 500m (24V)16A · 500m (24V)20A · 500m (24V)25A · 500m (24V)32A · 500m (24V)40A · 500m (24V)50A · 500m (24V)63A · 500m (24V)80A · 500m (24V)100A · 500m (24V)125A · 500m (24V)160A · 500m (24V)200A · 500m (24V)