650 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 650 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 3.62V (0.53%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.92V (1.73%)
Voltage at Load686.4 VLine Loss: 4068.7 W
Max Power & Breaker776.82 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 650A 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 | 1927.43 V (279.34%) | 0.0 V | 3179.35 V (460.78%) | 2169960.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1156.46 V (167.6%) | 0.0 V | 1907.61 V (276.47%) | 1301976.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 722.78 V (104.75%) | 0.0 V | 1192.26 V (172.79%) | 813735.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 481.86 V (69.83%) | 208.1 V | 794.84 V (115.19%) | 542490.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 289.11 V (41.9%) | 400.9 V | 476.9 V (69.12%) | 325494.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 180.7 V (26.19%) | 509.3 V | 298.06 V (43.2%) | 203433.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 115.65 V (16.76%) | 574.4 V | 190.76 V (27.65%) | 130197.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 82.6 V (11.97%) | 607.4 V | 136.26 V (19.75%) | 92998.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 57.82 V (8.38%) | 632.2 V | 95.38 V (13.82%) | 65098.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 41.3 V (5.99%) | 648.7 V | 68.13 V (9.87%) | 46499.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 30.43 V (4.41%) | 659.6 V | 50.2 V (7.28%) | 34262.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 24.09 V (3.49%) | 665.9 V | 39.74 V (5.76%) | 27124.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 19.27 V (2.79%) | 670.7 V | 31.79 V (4.61%) | 21699.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 15.63 V (2.26%) | 674.4 V | 25.78 V (3.74%) | 17594.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 12.05 V (1.75%) | 678.0 V | 19.87 V (2.88%) | 13562.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 9.64 V (1.4%) | 680.4 V | 15.9 V (2.3%) | 10849.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 7.23 V (1.05%) | 682.8 V | 11.92 V (1.73%) | 8137.4 W | Drop High |
FAQ — 650 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 650A at 120 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 650A over 120m at 690V (voltage drop: 3.62V or 0.53%).
What is the power capacity of 650A at 690V?
At unity power factor, 650A at 690V supports 776.82 kW with a standard 700A circuit breaker.
Related Lengths & Currents (690V)
650A · 5m (690V)650A · 10m (690V)650A · 15m (690V)650A · 20m (690V)650A · 25m (690V)650A · 30m (690V)650A · 35m (690V)650A · 40m (690V)650A · 45m (690V)650A · 50m (690V)650A · 60m (690V)650A · 70m (690V)10A · 120m (690V)16A · 120m (690V)20A · 120m (690V)25A · 120m (690V)32A · 120m (690V)40A · 120m (690V)50A · 120m (690V)63A · 120m (690V)80A · 120m (690V)100A · 120m (690V)125A · 120m (690V)160A · 120m (690V)200A · 120m (690V)