63 Amp Cable Size at 45 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 45 m (147.6 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 6.57V (0.95%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 6.93V (1.0%)
Voltage at Load683.4 VLine Loss: 716.7 W
Max Power & Breaker75.29 kW63A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 45m
| 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 | 70.05 V (10.15%) | 619.9 V | 115.56 V (16.75%) | 7644.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 42.03 V (6.09%) | 648.0 V | 69.33 V (10.05%) | 4586.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 26.27 V (3.81%) | 663.7 V | 43.33 V (6.28%) | 2866.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 17.51 V (2.54%) | 672.5 V | 28.89 V (4.19%) | 1911.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 10.51 V (1.52%) | 679.5 V | 17.33 V (2.51%) | 1146.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 6.57 V (0.95%) | 683.4 V | 10.83 V (1.57%) | 716.7 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 4.2 V (0.61%) | 685.8 V | 6.93 V (1.0%) | 458.7 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 3.0 V (0.44%) | 687.0 V | 4.95 V (0.72%) | 327.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 2.1 V (0.3%) | 687.9 V | 3.47 V (0.5%) | 229.3 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.5 V (0.22%) | 688.5 V | 2.48 V (0.36%) | 163.8 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.11 V (0.16%) | 688.9 V | 1.82 V (0.26%) | 120.7 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.88 V (0.13%) | 689.1 V | 1.44 V (0.21%) | 95.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.7 V (0.1%) | 689.3 V | 1.16 V (0.17%) | 76.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.57 V (0.08%) | 689.4 V | 0.94 V (0.14%) | 62.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.44 V (0.06%) | 689.6 V | 0.72 V (0.1%) | 47.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.35 V (0.05%) | 689.6 V | 0.58 V (0.08%) | 38.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.26 V (0.04%) | 689.7 V | 0.43 V (0.06%) | 28.7 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 45 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 63A at 45 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 45m at 690V (voltage drop: 6.57V or 0.95%).
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 · 50m (690V)63A · 60m (690V)63A · 70m (690V)10A · 45m (690V)16A · 45m (690V)20A · 45m (690V)25A · 45m (690V)32A · 45m (690V)40A · 45m (690V)50A · 45m (690V)80A · 45m (690V)100A · 45m (690V)125A · 45m (690V)160A · 45m (690V)200A · 45m (690V)