63 Amp Cable Size at 120 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 120 m (393.7 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 11.21V (2.7%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 9.24V (2.23%)
Voltage at Load403.8 VLine Loss: 1223.1 W
Max Power & Breaker45.28 kW63A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 120m
| 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 | 186.81 V (45.01%) | 228.2 V | 308.15 V (74.25%) | 20384.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 112.09 V (27.01%) | 302.9 V | 184.89 V (44.55%) | 12230.9 W | Drop High |
| 4 mm² | 32 A | 25 A | 70.05 V (16.88%) | 344.9 V | 115.56 V (27.85%) | 7644.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 46.7 V (11.25%) | 368.3 V | 77.04 V (18.56%) | 5096.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 28.02 V (6.75%) | 387.0 V | 46.22 V (11.14%) | 3057.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.51 V (4.22%) | 397.5 V | 28.89 V (6.96%) | 1911.1 W | ~ ≤5% |
| 25 mm² | 101 A | 78 A | 11.21 V (2.7%) | 403.8 V | 18.49 V (4.46%) | 1223.1 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 8.01 V (1.93%) | 407.0 V | 13.21 V (3.18%) | 873.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 5.6 V (1.35%) | 409.4 V | 9.24 V (2.23%) | 611.5 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 4.0 V (0.96%) | 411.0 V | 6.6 V (1.59%) | 436.8 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.95 V (0.71%) | 412.1 V | 4.87 V (1.17%) | 321.9 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.34 V (0.56%) | 412.7 V | 3.85 V (0.93%) | 254.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.87 V (0.45%) | 413.1 V | 3.08 V (0.74%) | 203.8 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.51 V (0.36%) | 413.5 V | 2.5 V (0.6%) | 165.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.17 V (0.28%) | 413.8 V | 1.93 V (0.46%) | 127.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.93 V (0.23%) | 414.1 V | 1.54 V (0.37%) | 101.9 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.7 V (0.17%) | 414.3 V | 1.16 V (0.28%) | 76.4 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 120 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 63A at 120 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 63A over 120m at 415V (voltage drop: 11.21V or 2.7%).
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 · 120m (415V)16A · 120m (415V)20A · 120m (415V)25A · 120m (415V)32A · 120m (415V)40A · 120m (415V)50A · 120m (415V)80A · 120m (415V)100A · 120m (415V)125A · 120m (415V)160A · 120m (415V)200A · 120m (415V)