400 Amp Cable Size at 350 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 400 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.49V (1.62%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 21.4V (5.35%)
Voltage at Load393.5 VLine Loss: 4494.0 W
Max Power & Breaker277.13 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 400A at 350m
| 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 (864.87%) | 0.0 V | 5706.53 V (1426.63%) | 2396800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2075.69 V (518.92%) | 0.0 V | 3423.92 V (855.98%) | 1438080.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1297.31 V (324.33%) | 0.0 V | 2139.95 V (534.99%) | 898800.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 864.87 V (216.22%) | 0.0 V | 1426.63 V (356.66%) | 599200.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 518.92 V (129.73%) | 0.0 V | 855.98 V (213.99%) | 359520.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 324.33 V (81.08%) | 75.7 V | 534.99 V (133.75%) | 224700.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 207.57 V (51.89%) | 192.4 V | 342.39 V (85.6%) | 143808.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 148.26 V (37.07%) | 251.7 V | 244.57 V (61.14%) | 102720.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 103.78 V (25.95%) | 296.2 V | 171.2 V (42.8%) | 71904.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 74.13 V (18.53%) | 325.9 V | 122.28 V (30.57%) | 51360.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 54.62 V (13.66%) | 345.4 V | 90.1 V (22.53%) | 37844.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 43.24 V (10.81%) | 356.8 V | 71.33 V (17.83%) | 29960.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 34.59 V (8.65%) | 365.4 V | 57.07 V (14.27%) | 23968.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 28.05 V (7.01%) | 372.0 V | 46.27 V (11.57%) | 19433.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 21.62 V (5.41%) | 378.4 V | 35.67 V (8.92%) | 14980.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.3 V (4.32%) | 382.7 V | 28.53 V (7.13%) | 11984.0 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 12.97 V (3.24%) | 387.0 V | 21.4 V (5.35%) | 8988.0 W | ~ ≤5% |
FAQ — 400 Amp Cable Size at 350 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 400A at 350 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 400A over 350m at 400V (voltage drop: 6.49V or 1.62%).
What is the power capacity of 400A at 400V?
At unity power factor, 400A at 400V supports 277.13 kW with a standard 400A circuit breaker.
Related Lengths & Currents (400V)
400A · 5m (400V)400A · 10m (400V)400A · 15m (400V)400A · 20m (400V)400A · 25m (400V)400A · 30m (400V)400A · 35m (400V)400A · 40m (400V)400A · 45m (400V)400A · 50m (400V)400A · 60m (400V)400A · 70m (400V)10A · 350m (400V)16A · 350m (400V)20A · 350m (400V)25A · 350m (400V)32A · 350m (400V)40A · 350m (400V)50A · 350m (400V)63A · 350m (400V)80A · 350m (400V)100A · 350m (400V)125A · 350m (400V)160A · 350m (400V)200A · 350m (400V)