425 Amp Cable Size at 175 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 9.19V (2.21%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.37V (2.74%)
Voltage at Load405.8 VLine Loss: 6764.4 W
Max Power & Breaker305.49 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 175m
| 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 | 1837.85 V (442.86%) | 0.0 V | 3031.59 V (730.5%) | 1352881.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1102.71 V (265.71%) | 0.0 V | 1818.96 V (438.3%) | 811728.7 W | Drop High |
| 4 mm² | 32 A | 25 A | 689.19 V (166.07%) | 0.0 V | 1136.85 V (273.94%) | 507330.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 459.46 V (110.71%) | 0.0 V | 757.9 V (182.63%) | 338220.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 275.68 V (66.43%) | 139.3 V | 454.74 V (109.58%) | 202932.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 172.3 V (41.52%) | 242.7 V | 284.21 V (68.48%) | 126832.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 110.27 V (26.57%) | 304.7 V | 181.9 V (43.83%) | 81172.9 W | Drop High |
| 35 mm² | 125 A | 97 A | 78.77 V (18.98%) | 336.2 V | 129.93 V (31.31%) | 57980.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 55.14 V (13.29%) | 359.9 V | 90.95 V (21.92%) | 40586.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 39.38 V (9.49%) | 375.6 V | 64.96 V (15.65%) | 28990.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 29.02 V (6.99%) | 386.0 V | 47.87 V (11.53%) | 21361.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 22.97 V (5.54%) | 392.0 V | 37.89 V (9.13%) | 16911.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 18.38 V (4.43%) | 396.6 V | 30.32 V (7.31%) | 13528.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 14.9 V (3.59%) | 400.1 V | 24.58 V (5.92%) | 10969.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 11.49 V (2.77%) | 403.5 V | 18.95 V (4.57%) | 8455.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 9.19 V (2.21%) | 405.8 V | 15.16 V (3.65%) | 6764.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 6.89 V (1.66%) | 408.1 V | 11.37 V (2.74%) | 5073.3 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 175 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 425A at 175 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 425A over 175m at 415V (voltage drop: 9.19V or 2.21%).
What is the power capacity of 425A at 415V?
At unity power factor, 425A at 415V supports 305.49 kW with a standard 450A circuit breaker.
Related Lengths & Currents (415V)
425A · 5m (415V)425A · 10m (415V)425A · 15m (415V)425A · 20m (415V)425A · 25m (415V)425A · 30m (415V)425A · 35m (415V)425A · 40m (415V)425A · 45m (415V)425A · 50m (415V)425A · 60m (415V)425A · 70m (415V)10A · 175m (415V)16A · 175m (415V)20A · 175m (415V)25A · 175m (415V)32A · 175m (415V)40A · 175m (415V)50A · 175m (415V)63A · 175m (415V)80A · 175m (415V)100A · 175m (415V)125A · 175m (415V)160A · 175m (415V)200A · 175m (415V)