63 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy 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)16 mm²Drop: 17.51V (2.54%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 18.49V (2.68%)
Voltage at Load672.5 VLine Loss: 1911.1 W
Max Power & Breaker75.29 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 (27.07%) | 503.2 V | 308.15 V (44.66%) | 20384.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 112.09 V (16.24%) | 577.9 V | 184.89 V (26.8%) | 12230.9 W | Drop High |
| 4 mm² | 32 A | 25 A | 70.05 V (10.15%) | 619.9 V | 115.56 V (16.75%) | 7644.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 46.7 V (6.77%) | 643.3 V | 77.04 V (11.16%) | 5096.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 28.02 V (4.06%) | 662.0 V | 46.22 V (6.7%) | 3057.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.51 V (2.54%) | 672.5 V | 28.89 V (4.19%) | 1911.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 11.21 V (1.62%) | 678.8 V | 18.49 V (2.68%) | 1223.1 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 8.01 V (1.16%) | 682.0 V | 13.21 V (1.91%) | 873.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 5.6 V (0.81%) | 684.4 V | 9.24 V (1.34%) | 611.5 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 4.0 V (0.58%) | 686.0 V | 6.6 V (0.96%) | 436.8 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.95 V (0.43%) | 687.1 V | 4.87 V (0.71%) | 321.9 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.34 V (0.34%) | 687.7 V | 3.85 V (0.56%) | 254.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.87 V (0.27%) | 688.1 V | 3.08 V (0.45%) | 203.8 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.51 V (0.22%) | 688.5 V | 2.5 V (0.36%) | 165.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.17 V (0.17%) | 688.8 V | 1.93 V (0.28%) | 127.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.93 V (0.14%) | 689.1 V | 1.54 V (0.22%) | 101.9 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.7 V (0.1%) | 689.3 V | 1.16 V (0.17%) | 76.4 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 63A at 120 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 63A over 120m at 690V (voltage drop: 17.51V or 2.54%).
What is the power capacity of 63A at 690V?
At unity power factor, 63A at 690V supports 75.29 kW with a standard 63A circuit breaker.
Related Lengths & Currents (690V)
63A · 5m (690V)63A · 10m (690V)63A · 15m (690V)63A · 20m (690V)63A · 25m (690V)63A · 30m (690V)63A · 35m (690V)63A · 40m (690V)63A · 45m (690V)63A · 50m (690V)63A · 60m (690V)63A · 70m (690V)10A · 120m (690V)16A · 120m (690V)20A · 120m (690V)25A · 120m (690V)32A · 120m (690V)40A · 120m (690V)50A · 120m (690V)80A · 120m (690V)100A · 120m (690V)125A · 120m (690V)160A · 120m (690V)200A · 120m (690V)