350 Amp Cable Size at 400 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.49V (1.56%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 21.4V (5.16%)
Voltage at Load408.5 VLine Loss: 3932.2 W
Max Power & Breaker251.58 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 400m
| 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 | 3459.48 V (833.61%) | 0.0 V | 5706.53 V (1375.07%) | 2097200.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2075.69 V (500.17%) | 0.0 V | 3423.92 V (825.04%) | 1258320.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1297.31 V (312.6%) | 0.0 V | 2139.95 V (515.65%) | 786450.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 864.87 V (208.4%) | 0.0 V | 1426.63 V (343.77%) | 524300.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 518.92 V (125.04%) | 0.0 V | 855.98 V (206.26%) | 314580.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 324.33 V (78.15%) | 90.7 V | 534.99 V (128.91%) | 196612.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 207.57 V (50.02%) | 207.4 V | 342.39 V (82.5%) | 125832.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 148.26 V (35.73%) | 266.7 V | 244.57 V (58.93%) | 89880.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 103.78 V (25.01%) | 311.2 V | 171.2 V (41.25%) | 62916.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 74.13 V (17.86%) | 340.9 V | 122.28 V (29.47%) | 44940.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 54.62 V (13.16%) | 360.4 V | 90.1 V (21.71%) | 33113.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 43.24 V (10.42%) | 371.8 V | 71.33 V (17.19%) | 26215.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 34.59 V (8.34%) | 380.4 V | 57.07 V (13.75%) | 20972.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 28.05 V (6.76%) | 387.0 V | 46.27 V (11.15%) | 17004.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 21.62 V (5.21%) | 393.4 V | 35.67 V (8.59%) | 13107.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.3 V (4.17%) | 397.7 V | 28.53 V (6.88%) | 10486.0 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 12.97 V (3.13%) | 402.0 V | 21.4 V (5.16%) | 7864.5 W | ~ ≤5% |
FAQ — 350 Amp Cable Size at 400 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 350A at 400 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 350A over 400m at 415V (voltage drop: 6.49V or 1.56%).
What is the power capacity of 350A at 415V?
At unity power factor, 350A at 415V supports 251.58 kW with a standard 350A circuit breaker.
Related Lengths & Currents (415V)
350A · 5m (415V)350A · 10m (415V)350A · 15m (415V)350A · 20m (415V)350A · 25m (415V)350A · 30m (415V)350A · 35m (415V)350A · 40m (415V)350A · 45m (415V)350A · 50m (415V)350A · 60m (415V)350A · 70m (415V)10A · 400m (415V)16A · 400m (415V)20A · 400m (415V)25A · 400m (415V)32A · 400m (415V)40A · 400m (415V)50A · 400m (415V)63A · 400m (415V)80A · 400m (415V)100A · 400m (415V)125A · 400m (415V)160A · 400m (415V)200A · 400m (415V)