425 Amp Cable Size at 80 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 80 m (262.5 ft).
Copper Cable (≤3% Drop)6× 400 mm²Drop: 0.61V (2.53%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.0V (25.0%)
Voltage at Load23.4 VLine Loss: 257.7 W
Max Power & Breaker10.2 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 80m
| 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 | 970.13 V (4042.22%) | 0.0 V | 1600.27 V (6667.78%) | 412306.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 582.08 V (2425.33%) | 0.0 V | 960.16 V (4000.67%) | 247384.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 363.8 V (1515.83%) | 0.0 V | 600.1 V (2500.42%) | 154615.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 242.53 V (1010.56%) | 0.0 V | 400.07 V (1666.94%) | 103076.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 145.52 V (606.33%) | 0.0 V | 240.04 V (1000.17%) | 61846.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 90.95 V (378.96%) | 0.0 V | 150.03 V (625.1%) | 38653.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 58.21 V (242.53%) | 0.0 V | 96.02 V (400.07%) | 24738.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 41.58 V (173.24%) | 0.0 V | 68.58 V (285.76%) | 17670.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 29.1 V (121.27%) | 0.0 V | 48.01 V (200.03%) | 12369.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 20.79 V (86.62%) | 3.2 V | 34.29 V (142.88%) | 8835.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 15.32 V (63.82%) | 8.7 V | 25.27 V (105.28%) | 6510.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 12.13 V (50.53%) | 11.9 V | 20.0 V (83.35%) | 5153.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 9.7 V (40.42%) | 14.3 V | 16.0 V (66.68%) | 4123.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 7.87 V (32.77%) | 16.1 V | 12.98 V (54.06%) | 3343.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.06 V (25.26%) | 17.9 V | 10.0 V (41.67%) | 2576.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.85 V (20.21%) | 19.1 V | 8.0 V (33.34%) | 2061.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.64 V (15.16%) | 20.4 V | 6.0 V (25.0%) | 1546.2 W | Drop High |
FAQ — 425 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 80 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 80m at 24V (voltage drop: 0.61V or 2.53%).
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 · 80m (24V)16A · 80m (24V)20A · 80m (24V)25A · 80m (24V)32A · 80m (24V)40A · 80m (24V)50A · 80m (24V)63A · 80m (24V)80A · 80m (24V)100A · 80m (24V)125A · 80m (24V)160A · 80m (24V)200A · 80m (24V)