425 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy 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 (1.33%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.37V (1.65%)
Voltage at Load680.8 VLine Loss: 6764.4 W
Max Power & Breaker507.92 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 (266.36%) | 0.0 V | 3031.59 V (439.36%) | 1352881.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1102.71 V (159.81%) | 0.0 V | 1818.96 V (263.62%) | 811728.7 W | Drop High |
| 4 mm² | 32 A | 25 A | 689.19 V (99.88%) | 0.8 V | 1136.85 V (164.76%) | 507330.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 459.46 V (66.59%) | 230.5 V | 757.9 V (109.84%) | 338220.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 275.68 V (39.95%) | 414.3 V | 454.74 V (65.9%) | 202932.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 172.3 V (24.97%) | 517.7 V | 284.21 V (41.19%) | 126832.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 110.27 V (15.98%) | 579.7 V | 181.9 V (26.36%) | 81172.9 W | Drop High |
| 35 mm² | 125 A | 97 A | 78.77 V (11.42%) | 611.2 V | 129.93 V (18.83%) | 57980.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 55.14 V (7.99%) | 634.9 V | 90.95 V (13.18%) | 40586.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 39.38 V (5.71%) | 650.6 V | 64.96 V (9.41%) | 28990.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 29.02 V (4.21%) | 661.0 V | 47.87 V (6.94%) | 21361.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 22.97 V (3.33%) | 667.0 V | 37.89 V (5.49%) | 16911.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 18.38 V (2.66%) | 671.6 V | 30.32 V (4.39%) | 13528.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 14.9 V (2.16%) | 675.1 V | 24.58 V (3.56%) | 10969.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 11.49 V (1.66%) | 678.5 V | 18.95 V (2.75%) | 8455.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 9.19 V (1.33%) | 680.8 V | 15.16 V (2.2%) | 6764.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 6.89 V (1.0%) | 683.1 V | 11.37 V (1.65%) | 5073.3 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 425A at 175 meters (690V)?
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 690V (voltage drop: 9.19V or 1.33%).
What is the power capacity of 425A at 690V?
At unity power factor, 425A at 690V supports 507.92 kW with a standard 450A circuit breaker.
Related Lengths & Currents (690V)
425A · 5m (690V)425A · 10m (690V)425A · 15m (690V)425A · 20m (690V)425A · 25m (690V)425A · 30m (690V)425A · 35m (690V)425A · 40m (690V)425A · 45m (690V)425A · 50m (690V)425A · 60m (690V)425A · 70m (690V)10A · 175m (690V)16A · 175m (690V)20A · 175m (690V)25A · 175m (690V)32A · 175m (690V)40A · 175m (690V)50A · 175m (690V)63A · 175m (690V)80A · 175m (690V)100A · 175m (690V)125A · 175m (690V)160A · 175m (690V)200A · 175m (690V)