250 Amp Cable Size at 150 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 150 m (492.1 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 11.58V (2.9%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 9.55V (2.39%)
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 150m
| 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 | 926.65 V (231.66%) | 0.0 V | 1528.53 V (382.13%) | 401250.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 555.99 V (139.0%) | 0.0 V | 917.12 V (229.28%) | 240750.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 347.49 V (86.87%) | 52.5 V | 573.2 V (143.3%) | 150468.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 231.66 V (57.92%) | 168.3 V | 382.13 V (95.53%) | 100312.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 139.0 V (34.75%) | 261.0 V | 229.28 V (57.32%) | 60187.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 86.87 V (21.72%) | 313.1 V | 143.3 V (35.83%) | 37617.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 55.6 V (13.9%) | 344.4 V | 91.71 V (22.93%) | 24075.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 39.71 V (9.93%) | 360.3 V | 65.51 V (16.38%) | 17196.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 27.8 V (6.95%) | 372.2 V | 45.86 V (11.46%) | 12037.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 19.86 V (4.96%) | 380.1 V | 32.75 V (8.19%) | 8598.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 14.63 V (3.66%) | 385.4 V | 24.13 V (6.03%) | 6335.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 11.58 V (2.9%) | 388.4 V | 19.11 V (4.78%) | 5015.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 9.27 V (2.32%) | 390.7 V | 15.29 V (3.82%) | 4012.5 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 7.51 V (1.88%) | 392.5 V | 12.39 V (3.1%) | 3253.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 5.79 V (1.45%) | 394.2 V | 9.55 V (2.39%) | 2507.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 4.63 V (1.16%) | 395.4 V | 7.64 V (1.91%) | 2006.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.47 V (0.87%) | 396.5 V | 5.73 V (1.43%) | 1504.7 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 150 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 250A at 150 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 250A over 150m 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 · 150m (400V)16A · 150m (400V)20A · 150m (400V)25A · 150m (400V)32A · 150m (400V)40A · 150m (400V)50A · 150m (400V)63A · 150m (400V)80A · 150m (400V)100A · 150m (400V)125A · 150m (400V)160A · 150m (400V)200A · 150m (400V)