63 Amp Cable Size at 350 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 350 m (1148.3 ft).
Copper Cable (≤3% Drop)50 mm²Drop: 16.35V (2.37%)
Aluminum Cable (≤3% Drop)70 mm²Drop: 19.26V (2.79%)
Voltage at Load673.7 VLine Loss: 1783.7 W
Max Power & Breaker75.29 kW63A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 350m
| 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 | 544.87 V (78.97%) | 145.1 V | 898.78 V (130.26%) | 59455.6 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 326.92 V (47.38%) | 363.1 V | 539.27 V (78.15%) | 35673.4 W | Drop High |
| 4 mm² | 32 A | 25 A | 204.33 V (29.61%) | 485.7 V | 337.04 V (48.85%) | 22295.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 136.22 V (19.74%) | 553.8 V | 224.69 V (32.56%) | 14863.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 81.73 V (11.84%) | 608.3 V | 134.82 V (19.54%) | 8918.3 W | Drop High |
| 16 mm² | 76 A | 59 A | 51.08 V (7.4%) | 638.9 V | 84.26 V (12.21%) | 5574.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 32.69 V (4.74%) | 657.3 V | 53.93 V (7.82%) | 3567.3 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 23.35 V (3.38%) | 666.6 V | 38.52 V (5.58%) | 2548.1 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 16.35 V (2.37%) | 673.7 V | 26.96 V (3.91%) | 1783.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 11.68 V (1.69%) | 678.3 V | 19.26 V (2.79%) | 1274.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 8.6 V (1.25%) | 681.4 V | 14.19 V (2.06%) | 938.8 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 6.81 V (0.99%) | 683.2 V | 11.23 V (1.63%) | 743.2 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 5.45 V (0.79%) | 684.6 V | 8.99 V (1.3%) | 594.6 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 4.42 V (0.64%) | 685.6 V | 7.29 V (1.06%) | 482.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 3.41 V (0.49%) | 686.6 V | 5.62 V (0.81%) | 371.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.72 V (0.39%) | 687.3 V | 4.49 V (0.65%) | 297.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.04 V (0.3%) | 688.0 V | 3.37 V (0.49%) | 223.0 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 63A at 350 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 50 mm² copper cable for 63A over 350m at 690V (voltage drop: 16.35V or 2.37%).
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 · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)