63 Amp Cable Size at 250 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 63 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)50 mm²Drop: 11.68V (2.81%)
Aluminum Cable (≤3% Drop)95 mm²Drop: 10.14V (2.44%)
Voltage at Load403.3 VLine Loss: 1274.0 W
Max Power & Breaker45.28 kW63A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 250m
| 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 | 389.19 V (93.78%) | 25.8 V | 641.98 V (154.7%) | 42468.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 233.52 V (56.27%) | 181.5 V | 385.19 V (92.82%) | 25481.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 145.95 V (35.17%) | 269.1 V | 240.74 V (58.01%) | 15925.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 97.3 V (23.45%) | 317.7 V | 160.5 V (38.67%) | 10617.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 58.38 V (14.07%) | 356.6 V | 96.3 V (23.2%) | 6370.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 36.49 V (8.79%) | 378.5 V | 60.19 V (14.5%) | 3981.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 23.35 V (5.63%) | 391.6 V | 38.52 V (9.28%) | 2548.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 16.68 V (4.02%) | 398.3 V | 27.51 V (6.63%) | 1820.1 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 11.68 V (2.81%) | 403.3 V | 19.26 V (4.64%) | 1274.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 8.34 V (2.01%) | 406.7 V | 13.76 V (3.31%) | 910.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 6.15 V (1.48%) | 408.9 V | 10.14 V (2.44%) | 670.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 4.86 V (1.17%) | 410.1 V | 8.02 V (1.93%) | 530.9 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 3.89 V (0.94%) | 411.1 V | 6.42 V (1.55%) | 424.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 3.16 V (0.76%) | 411.8 V | 5.21 V (1.25%) | 344.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 2.43 V (0.59%) | 412.6 V | 4.01 V (0.97%) | 265.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.95 V (0.47%) | 413.1 V | 3.21 V (0.77%) | 212.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.46 V (0.35%) | 413.5 V | 2.41 V (0.58%) | 159.3 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 250 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 63A at 250 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 50 mm² copper cable for 63A over 250m at 415V (voltage drop: 11.68V or 2.81%).
What is the power capacity of 63A at 415V?
At unity power factor, 63A at 415V supports 45.28 kW with a standard 63A circuit breaker.
Related Lengths & Currents (415V)
63A · 5m (415V)63A · 10m (415V)63A · 15m (415V)63A · 20m (415V)63A · 25m (415V)63A · 30m (415V)63A · 35m (415V)63A · 40m (415V)63A · 45m (415V)63A · 50m (415V)63A · 60m (415V)63A · 70m (415V)10A · 250m (415V)16A · 250m (415V)20A · 250m (415V)25A · 250m (415V)32A · 250m (415V)40A · 250m (415V)50A · 250m (415V)80A · 250m (415V)100A · 250m (415V)125A · 250m (415V)160A · 250m (415V)200A · 250m (415V)