400 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 400 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 10.81V (2.61%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 10.7V (2.58%)
Voltage at Load404.2 VLine Loss: 7490.0 W
Max Power & Breaker287.52 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 (416.81%) | 0.0 V | 2853.27 V (687.53%) | 1198400.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1037.84 V (250.08%) | 0.0 V | 1711.96 V (412.52%) | 719040.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 648.65 V (156.3%) | 0.0 V | 1069.97 V (257.83%) | 449400.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 432.44 V (104.2%) | 0.0 V | 713.32 V (171.88%) | 299600.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 259.46 V (62.52%) | 155.5 V | 427.99 V (103.13%) | 179760.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 162.16 V (39.08%) | 252.8 V | 267.49 V (64.46%) | 112350.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 103.78 V (25.01%) | 311.2 V | 171.2 V (41.25%) | 71904.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 74.13 V (17.86%) | 340.9 V | 122.28 V (29.47%) | 51360.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 51.89 V (12.5%) | 363.1 V | 85.6 V (20.63%) | 35952.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 37.07 V (8.93%) | 377.9 V | 61.14 V (14.73%) | 25680.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 27.31 V (6.58%) | 387.7 V | 45.05 V (10.86%) | 18922.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 21.62 V (5.21%) | 393.4 V | 35.67 V (8.59%) | 14980.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 17.3 V (4.17%) | 397.7 V | 28.53 V (6.88%) | 11984.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 14.02 V (3.38%) | 401.0 V | 23.13 V (5.57%) | 9716.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 10.81 V (2.61%) | 404.2 V | 17.83 V (4.3%) | 7490.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 8.65 V (2.08%) | 406.4 V | 14.27 V (3.44%) | 5992.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 6.49 V (1.56%) | 408.5 V | 10.7 V (2.58%) | 4494.0 W | ✓ OK (≤3%) |
FAQ — 400 Amp Cable Size at 175 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 400A at 175 meters (415V)?
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 415V (voltage drop: 10.81V or 2.61%).
What is the power capacity of 400A at 415V?
At unity power factor, 400A at 415V supports 287.52 kW with a standard 400A circuit breaker.
Related Lengths & Currents (415V)
400A · 5m (415V)400A · 10m (415V)400A · 15m (415V)400A · 20m (415V)400A · 25m (415V)400A · 30m (415V)400A · 35m (415V)400A · 40m (415V)400A · 45m (415V)400A · 50m (415V)400A · 60m (415V)400A · 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)