750 Amp Cable Size at 500 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 750 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 17.38V (2.52%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 57.32V (8.31%)
Voltage at Load672.6 VLine Loss: 22570.3 W
Max Power & Breaker896.34 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 500m
| 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 | 9266.47 V (1342.97%) | 0.0 V | 15285.35 V (2215.27%) | 12037500.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 5559.88 V (805.78%) | 0.0 V | 9171.21 V (1329.16%) | 7222500.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 3474.93 V (503.61%) | 0.0 V | 5732.01 V (830.73%) | 4514062.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 2316.62 V (335.74%) | 0.0 V | 3821.34 V (553.82%) | 3009375.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 1389.97 V (201.45%) | 0.0 V | 2292.8 V (332.29%) | 1805625.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 868.73 V (125.9%) | 0.0 V | 1433.0 V (207.68%) | 1128515.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 555.99 V (80.58%) | 134.0 V | 917.12 V (132.92%) | 722250.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 397.13 V (57.56%) | 292.9 V | 655.09 V (94.94%) | 515892.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 277.99 V (40.29%) | 412.0 V | 458.56 V (66.46%) | 361125.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 198.57 V (28.78%) | 491.4 V | 327.54 V (47.47%) | 257946.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 146.31 V (21.2%) | 543.7 V | 241.35 V (34.98%) | 190065.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 115.83 V (16.79%) | 574.2 V | 191.07 V (27.69%) | 150468.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 92.66 V (13.43%) | 597.3 V | 152.85 V (22.15%) | 120375.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 75.13 V (10.89%) | 614.9 V | 123.94 V (17.96%) | 97601.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 57.92 V (8.39%) | 632.1 V | 95.53 V (13.85%) | 75234.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 46.33 V (6.71%) | 643.7 V | 76.43 V (11.08%) | 60187.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 34.75 V (5.04%) | 655.3 V | 57.32 V (8.31%) | 45140.6 W | Drop High |
FAQ — 750 Amp Cable Size at 500 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 750A at 500 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 750A over 500m at 690V (voltage drop: 17.38V or 2.52%).
What is the power capacity of 750A at 690V?
At unity power factor, 750A at 690V supports 896.34 kW with a standard 800A circuit breaker.
Related Lengths & Currents (690V)
750A · 5m (690V)750A · 10m (690V)750A · 15m (690V)750A · 20m (690V)750A · 25m (690V)750A · 30m (690V)750A · 35m (690V)750A · 40m (690V)750A · 45m (690V)750A · 50m (690V)750A · 60m (690V)750A · 70m (690V)10A · 500m (690V)16A · 500m (690V)20A · 500m (690V)25A · 500m (690V)32A · 500m (690V)40A · 500m (690V)50A · 500m (690V)63A · 500m (690V)80A · 500m (690V)100A · 500m (690V)125A · 500m (690V)160A · 500m (690V)200A · 500m (690V)