400 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 400 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 10.81V (1.57%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 10.7V (1.55%)
Voltage at Load679.2 VLine Loss: 7490.0 W
Max Power & Breaker478.05 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 400A 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 | 1729.74 V (250.69%) | 0.0 V | 2853.27 V (413.52%) | 1198400.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1037.84 V (150.41%) | 0.0 V | 1711.96 V (248.11%) | 719040.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 648.65 V (94.01%) | 41.3 V | 1069.97 V (155.07%) | 449400.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 432.44 V (62.67%) | 257.6 V | 713.32 V (103.38%) | 299600.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 259.46 V (37.6%) | 430.5 V | 427.99 V (62.03%) | 179760.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 162.16 V (23.5%) | 527.8 V | 267.49 V (38.77%) | 112350.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 103.78 V (15.04%) | 586.2 V | 171.2 V (24.81%) | 71904.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 74.13 V (10.74%) | 615.9 V | 122.28 V (17.72%) | 51360.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 51.89 V (7.52%) | 638.1 V | 85.6 V (12.41%) | 35952.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 37.07 V (5.37%) | 652.9 V | 61.14 V (8.86%) | 25680.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 27.31 V (3.96%) | 662.7 V | 45.05 V (6.53%) | 18922.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 21.62 V (3.13%) | 668.4 V | 35.67 V (5.17%) | 14980.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 17.3 V (2.51%) | 672.7 V | 28.53 V (4.14%) | 11984.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 14.02 V (2.03%) | 676.0 V | 23.13 V (3.35%) | 9716.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 10.81 V (1.57%) | 679.2 V | 17.83 V (2.58%) | 7490.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 8.65 V (1.25%) | 681.4 V | 14.27 V (2.07%) | 5992.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 6.49 V (0.94%) | 683.5 V | 10.7 V (1.55%) | 4494.0 W | ✓ OK (≤3%) |
FAQ — 400 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 400A at 175 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 400A over 175m at 690V (voltage drop: 10.81V or 1.57%).
What is the power capacity of 400A at 690V?
At unity power factor, 400A at 690V supports 478.05 kW with a standard 400A circuit breaker.
Related Lengths & Currents (690V)
400A · 5m (690V)400A · 10m (690V)400A · 15m (690V)400A · 20m (690V)400A · 25m (690V)400A · 30m (690V)400A · 35m (690V)400A · 40m (690V)400A · 45m (690V)400A · 50m (690V)400A · 60m (690V)400A · 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)