400 Amp Cable Size at 10 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 10 m (32.8 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 0.62V (0.15%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 0.61V (0.15%)
Voltage at Load414.4 VLine Loss: 428.0 W
Max Power & Breaker287.52 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 400A at 10m
| 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 | 98.84 V (23.82%) | 316.2 V | 163.04 V (39.29%) | 68480.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 59.31 V (14.29%) | 355.7 V | 97.83 V (23.57%) | 41088.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 37.07 V (8.93%) | 377.9 V | 61.14 V (14.73%) | 25680.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 24.71 V (5.95%) | 390.3 V | 40.76 V (9.82%) | 17120.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 14.83 V (3.57%) | 400.2 V | 24.46 V (5.89%) | 10272.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 9.27 V (2.23%) | 405.7 V | 15.29 V (3.68%) | 6420.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 5.93 V (1.43%) | 409.1 V | 9.78 V (2.36%) | 4108.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.24 V (1.02%) | 410.8 V | 6.99 V (1.68%) | 2934.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 2.97 V (0.71%) | 412.0 V | 4.89 V (1.18%) | 2054.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.12 V (0.51%) | 412.9 V | 3.49 V (0.84%) | 1467.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.56 V (0.38%) | 413.4 V | 2.57 V (0.62%) | 1081.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 1.24 V (0.3%) | 413.8 V | 2.04 V (0.49%) | 856.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.99 V (0.24%) | 414.0 V | 1.63 V (0.39%) | 684.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.8 V (0.19%) | 414.2 V | 1.32 V (0.32%) | 555.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 0.62 V (0.15%) | 414.4 V | 1.02 V (0.25%) | 428.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.49 V (0.12%) | 414.5 V | 0.82 V (0.2%) | 342.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.37 V (0.09%) | 414.6 V | 0.61 V (0.15%) | 256.8 W | ✓ OK (≤3%) |
FAQ — 400 Amp Cable Size at 10 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 400A at 10 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 10m at 415V (voltage drop: 0.62V or 0.15%).
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 · 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 · 10m (415V)16A · 10m (415V)20A · 10m (415V)25A · 10m (415V)32A · 10m (415V)40A · 10m (415V)50A · 10m (415V)63A · 10m (415V)80A · 10m (415V)100A · 10m (415V)125A · 10m (415V)160A · 10m (415V)200A · 10m (415V)