250 Amp Cable Size at 90 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 250 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)150 mm²Drop: 6.42V (2.79%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 6.62V (2.88%)
Voltage at Load223.6 VLine Loss: 1605.0 W
Max Power & Breaker57.5 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 90m
| 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 | 642.0 V (279.13%) | 0.0 V | 1059.0 V (460.43%) | 160500.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 385.2 V (167.48%) | 0.0 V | 635.4 V (276.26%) | 96300.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 240.75 V (104.67%) | 0.0 V | 397.12 V (172.66%) | 60187.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 160.5 V (69.78%) | 69.5 V | 264.75 V (115.11%) | 40125.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 96.3 V (41.87%) | 133.7 V | 158.85 V (69.07%) | 24075.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 60.19 V (26.17%) | 169.8 V | 99.28 V (43.17%) | 15046.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 38.52 V (16.75%) | 191.5 V | 63.54 V (27.63%) | 9630.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 27.51 V (11.96%) | 202.5 V | 45.39 V (19.73%) | 6878.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 19.26 V (8.37%) | 210.7 V | 31.77 V (13.81%) | 4815.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 13.76 V (5.98%) | 216.2 V | 22.69 V (9.87%) | 3439.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 10.14 V (4.41%) | 219.9 V | 16.72 V (7.27%) | 2534.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 8.02 V (3.49%) | 222.0 V | 13.24 V (5.76%) | 2006.2 W | ~ ≤5% |
| 150 mm² | 309 A | 241 A | 6.42 V (2.79%) | 223.6 V | 10.59 V (4.6%) | 1605.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 5.21 V (2.26%) | 224.8 V | 8.59 V (3.73%) | 1301.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 4.01 V (1.74%) | 226.0 V | 6.62 V (2.88%) | 1003.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 3.21 V (1.4%) | 226.8 V | 5.29 V (2.3%) | 802.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.41 V (1.05%) | 227.6 V | 3.97 V (1.73%) | 601.9 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 90 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 250A at 90 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 150 mm² copper cable for 250A over 90m at 230V (voltage drop: 6.42V or 2.79%).
What is the power capacity of 250A at 230V?
At unity power factor, 250A at 230V supports 57.5 kW with a standard 250A circuit breaker.
Related Lengths & Currents (230V)
250A · 5m (230V)250A · 10m (230V)250A · 15m (230V)250A · 20m (230V)250A · 25m (230V)250A · 30m (230V)250A · 35m (230V)250A · 40m (230V)250A · 45m (230V)250A · 50m (230V)250A · 60m (230V)250A · 70m (230V)10A · 90m (230V)16A · 90m (230V)20A · 90m (230V)25A · 90m (230V)32A · 90m (230V)40A · 90m (230V)50A · 90m (230V)63A · 90m (230V)80A · 90m (230V)100A · 90m (230V)125A · 90m (230V)160A · 90m (230V)200A · 90m (230V)