63 Amp Cable Size at 250 Meters (400V Three-Phase (IEC European Grid))
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 (2.92%)
Aluminum Cable (≤3% Drop)95 mm²Drop: 10.14V (2.53%)
Voltage at Load388.3 VLine Loss: 1274.0 W
Max Power & Breaker43.65 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 (97.3%) | 10.8 V | 641.98 V (160.5%) | 42468.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 233.52 V (58.38%) | 166.5 V | 385.19 V (96.3%) | 25481.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 145.95 V (36.49%) | 254.1 V | 240.74 V (60.19%) | 15925.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 97.3 V (24.32%) | 302.7 V | 160.5 V (40.12%) | 10617.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 58.38 V (14.59%) | 341.6 V | 96.3 V (24.07%) | 6370.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 36.49 V (9.12%) | 363.5 V | 60.19 V (15.05%) | 3981.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 23.35 V (5.84%) | 376.6 V | 38.52 V (9.63%) | 2548.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 16.68 V (4.17%) | 383.3 V | 27.51 V (6.88%) | 1820.1 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 11.68 V (2.92%) | 388.3 V | 19.26 V (4.81%) | 1274.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 8.34 V (2.08%) | 391.7 V | 13.76 V (3.44%) | 910.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 6.15 V (1.54%) | 393.9 V | 10.14 V (2.53%) | 670.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 4.86 V (1.22%) | 395.1 V | 8.02 V (2.01%) | 530.9 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 3.89 V (0.97%) | 396.1 V | 6.42 V (1.6%) | 424.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 3.16 V (0.79%) | 396.8 V | 5.21 V (1.3%) | 344.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 2.43 V (0.61%) | 397.6 V | 4.01 V (1.0%) | 265.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.95 V (0.49%) | 398.1 V | 3.21 V (0.8%) | 212.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.46 V (0.36%) | 398.5 V | 2.41 V (0.6%) | 159.3 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 250 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 63A at 250 meters (400V)?
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 400V (voltage drop: 11.68V or 2.92%).
What is the power capacity of 63A at 400V?
At unity power factor, 63A at 400V supports 43.65 kW with a standard 63A circuit breaker.
Related Lengths & Currents (400V)
63A · 5m (400V)63A · 10m (400V)63A · 15m (400V)63A · 20m (400V)63A · 25m (400V)63A · 30m (400V)63A · 35m (400V)63A · 40m (400V)63A · 45m (400V)63A · 50m (400V)63A · 60m (400V)63A · 70m (400V)10A · 250m (400V)16A · 250m (400V)20A · 250m (400V)25A · 250m (400V)32A · 250m (400V)40A · 250m (400V)50A · 250m (400V)80A · 250m (400V)100A · 250m (400V)125A · 250m (400V)160A · 250m (400V)200A · 250m (400V)