425 Amp Cable Size at 15 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 15 m (49.2 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 0.68V (2.84%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.13V (4.69%)
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 15m
| 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 | 181.9 V (757.92%) | 0.0 V | 300.05 V (1250.21%) | 77307.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 109.14 V (454.75%) | 0.0 V | 180.03 V (750.12%) | 46384.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 68.21 V (284.22%) | 0.0 V | 112.52 V (468.83%) | 28990.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 45.48 V (189.48%) | 0.0 V | 75.01 V (312.55%) | 19326.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 27.29 V (113.69%) | 0.0 V | 45.01 V (187.53%) | 11596.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.05 V (71.05%) | 6.9 V | 28.13 V (117.21%) | 7247.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.91 V (45.48%) | 13.1 V | 18.0 V (75.01%) | 4638.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.8 V (32.48%) | 16.2 V | 12.86 V (53.58%) | 3313.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.46 V (22.74%) | 18.5 V | 9.0 V (37.51%) | 2319.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.9 V (16.24%) | 20.1 V | 6.43 V (26.79%) | 1656.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.87 V (11.97%) | 21.1 V | 4.74 V (19.74%) | 1220.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.27 V (9.47%) | 21.7 V | 3.75 V (15.63%) | 966.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.82 V (7.58%) | 22.2 V | 3.0 V (12.5%) | 773.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.47 V (6.15%) | 22.5 V | 2.43 V (10.14%) | 626.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.14 V (4.74%) | 22.9 V | 1.88 V (7.81%) | 483.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.91 V (3.79%) | 23.1 V | 1.5 V (6.25%) | 386.5 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 0.68 V (2.84%) | 23.3 V | 1.13 V (4.69%) | 289.9 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 425A at 15 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 425A over 15m 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 · 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 · 15m (24V)16A · 15m (24V)20A · 15m (24V)25A · 15m (24V)32A · 15m (24V)40A · 15m (24V)50A · 15m (24V)63A · 15m (24V)80A · 15m (24V)100A · 15m (24V)125A · 15m (24V)160A · 15m (24V)200A · 15m (24V)