63 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 20.02V (2.9%)
Aluminum Cable (≤3% Drop)70 mm²Drop: 16.51V (2.39%)
Voltage at Load670.0 VLine Loss: 2184.1 W
Max Power & Breaker75.29 kW63A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 300m
| 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 | 467.03 V (67.69%) | 223.0 V | 770.38 V (111.65%) | 50962.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 280.22 V (40.61%) | 409.8 V | 462.23 V (66.99%) | 30577.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 175.14 V (25.38%) | 514.9 V | 288.89 V (41.87%) | 19110.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 116.76 V (16.92%) | 573.2 V | 192.6 V (27.91%) | 12740.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 70.05 V (10.15%) | 619.9 V | 115.56 V (16.75%) | 7644.3 W | Drop High |
| 16 mm² | 76 A | 59 A | 43.78 V (6.35%) | 646.2 V | 72.22 V (10.47%) | 4777.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 28.02 V (4.06%) | 662.0 V | 46.22 V (6.7%) | 3057.7 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 20.02 V (2.9%) | 670.0 V | 33.02 V (4.78%) | 2184.1 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 14.01 V (2.03%) | 676.0 V | 23.11 V (3.35%) | 1528.9 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 10.01 V (1.45%) | 680.0 V | 16.51 V (2.39%) | 1092.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 7.37 V (1.07%) | 682.6 V | 12.16 V (1.76%) | 804.7 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 5.84 V (0.85%) | 684.2 V | 9.63 V (1.4%) | 637.0 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 4.67 V (0.68%) | 685.3 V | 7.7 V (1.12%) | 509.6 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 3.79 V (0.55%) | 686.2 V | 6.25 V (0.91%) | 413.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 2.92 V (0.42%) | 687.1 V | 4.81 V (0.7%) | 318.5 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.34 V (0.34%) | 687.7 V | 3.85 V (0.56%) | 254.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.75 V (0.25%) | 688.2 V | 2.89 V (0.42%) | 191.1 W | ✓ OK (≤3%) |
FAQ — 63 Amp Cable Size at 300 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 63A at 300 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 63A over 300m at 690V (voltage drop: 20.02V or 2.9%).
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 · 300m (690V)16A · 300m (690V)20A · 300m (690V)25A · 300m (690V)32A · 300m (690V)40A · 300m (690V)50A · 300m (690V)80A · 300m (690V)100A · 300m (690V)125A · 300m (690V)160A · 300m (690V)200A · 300m (690V)