63 Amp Cable Size at 80 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 80 m (262.5 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 11.68V (1.69%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 12.33V (1.79%)
Voltage at Load678.3 VLine Loss: 1274.0 W
Max Power & Breaker75.29 kW63A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 80m
| 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 | 124.54 V (18.05%) | 565.5 V | 205.44 V (29.77%) | 13589.9 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 74.72 V (10.83%) | 615.3 V | 123.26 V (17.86%) | 8153.9 W | Drop High |
| 4 mm² | 32 A | 25 A | 46.7 V (6.77%) | 643.3 V | 77.04 V (11.16%) | 5096.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 31.14 V (4.51%) | 658.9 V | 51.36 V (7.44%) | 3397.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 18.68 V (2.71%) | 671.3 V | 30.82 V (4.47%) | 2038.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 11.68 V (1.69%) | 678.3 V | 19.26 V (2.79%) | 1274.0 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 7.47 V (1.08%) | 682.5 V | 12.33 V (1.79%) | 815.4 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 5.34 V (0.77%) | 684.7 V | 8.8 V (1.28%) | 582.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 3.74 V (0.54%) | 686.3 V | 6.16 V (0.89%) | 407.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 2.67 V (0.39%) | 687.3 V | 4.4 V (0.64%) | 291.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.97 V (0.28%) | 688.0 V | 3.24 V (0.47%) | 214.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.56 V (0.23%) | 688.4 V | 2.57 V (0.37%) | 169.9 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.25 V (0.18%) | 688.8 V | 2.05 V (0.3%) | 135.9 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.01 V (0.15%) | 689.0 V | 1.67 V (0.24%) | 110.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.78 V (0.11%) | 689.2 V | 1.28 V (0.19%) | 84.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.62 V (0.09%) | 689.4 V | 1.03 V (0.15%) | 67.9 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.47 V (0.07%) | 689.5 V | 0.77 V (0.11%) | 51.0 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 80 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 63A at 80 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 80m at 690V (voltage drop: 11.68V or 1.69%).
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 · 80m (690V)16A · 80m (690V)20A · 80m (690V)25A · 80m (690V)32A · 80m (690V)40A · 80m (690V)50A · 80m (690V)80A · 80m (690V)100A · 80m (690V)125A · 80m (690V)160A · 80m (690V)200A · 80m (690V)