250 Amp Cable Size at 500 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 250 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 11.58V (2.9%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 19.11V (4.78%)
Voltage at Load388.4 VLine Loss: 5015.6 W
Max Power & Breaker173.21 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 500m
| 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 | 3088.82 V (772.21%) | 0.0 V | 5095.12 V (1273.78%) | 1337500.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1853.29 V (463.32%) | 0.0 V | 3057.07 V (764.27%) | 802500.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1158.31 V (289.58%) | 0.0 V | 1910.67 V (477.67%) | 501562.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 772.21 V (193.05%) | 0.0 V | 1273.78 V (318.44%) | 334375.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 463.32 V (115.83%) | 0.0 V | 764.27 V (191.07%) | 200625.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 289.58 V (72.39%) | 110.4 V | 477.67 V (119.42%) | 125390.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 185.33 V (46.33%) | 214.7 V | 305.71 V (76.43%) | 80250.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 132.38 V (33.09%) | 267.6 V | 218.36 V (54.59%) | 57321.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 92.66 V (23.17%) | 307.3 V | 152.85 V (38.21%) | 40125.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 66.19 V (16.55%) | 333.8 V | 109.18 V (27.3%) | 28660.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 48.77 V (12.19%) | 351.2 V | 80.45 V (20.11%) | 21118.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 38.61 V (9.65%) | 361.4 V | 63.69 V (15.92%) | 16718.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 30.89 V (7.72%) | 369.1 V | 50.95 V (12.74%) | 13375.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 25.04 V (6.26%) | 375.0 V | 41.31 V (10.33%) | 10844.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 19.31 V (4.83%) | 380.7 V | 31.84 V (7.96%) | 8359.4 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 15.44 V (3.86%) | 384.6 V | 25.48 V (6.37%) | 6687.5 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 11.58 V (2.9%) | 388.4 V | 19.11 V (4.78%) | 5015.6 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 500 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 250A at 500 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 250A over 500m at 400V (voltage drop: 11.58V or 2.9%).
What is the power capacity of 250A at 400V?
At unity power factor, 250A at 400V supports 173.21 kW with a standard 250A circuit breaker.
Related Lengths & Currents (400V)
250A · 5m (400V)250A · 10m (400V)250A · 15m (400V)250A · 20m (400V)250A · 25m (400V)250A · 30m (400V)250A · 35m (400V)250A · 40m (400V)250A · 45m (400V)250A · 50m (400V)250A · 60m (400V)250A · 70m (400V)10A · 500m (400V)16A · 500m (400V)20A · 500m (400V)25A · 500m (400V)32A · 500m (400V)40A · 500m (400V)50A · 500m (400V)63A · 500m (400V)80A · 500m (400V)100A · 500m (400V)125A · 500m (400V)160A · 500m (400V)200A · 500m (400V)