750 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 750 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 12.16V (1.76%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 40.12V (5.82%)
Voltage at Load677.8 VLine Loss: 15799.2 W
Max Power & Breaker896.34 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A 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 | 6486.53 V (940.08%) | 0.0 V | 10699.74 V (1550.69%) | 8426250.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3891.92 V (564.05%) | 0.0 V | 6419.85 V (930.41%) | 5055750.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2432.45 V (352.53%) | 0.0 V | 4012.4 V (581.51%) | 3159843.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 1621.63 V (235.02%) | 0.0 V | 2674.94 V (387.67%) | 2106562.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 972.98 V (141.01%) | 0.0 V | 1604.96 V (232.6%) | 1263937.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 608.11 V (88.13%) | 81.9 V | 1003.1 V (145.38%) | 789960.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 389.19 V (56.4%) | 300.8 V | 641.98 V (93.04%) | 505575.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 277.99 V (40.29%) | 412.0 V | 458.56 V (66.46%) | 361125.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 194.6 V (28.2%) | 495.4 V | 320.99 V (46.52%) | 252787.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 139.0 V (20.14%) | 551.0 V | 229.28 V (33.23%) | 180562.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 102.42 V (14.84%) | 587.6 V | 168.94 V (24.48%) | 133046.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 81.08 V (11.75%) | 608.9 V | 133.75 V (19.38%) | 105328.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 64.87 V (9.4%) | 625.1 V | 107.0 V (15.51%) | 84262.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 52.59 V (7.62%) | 637.4 V | 86.75 V (12.57%) | 68320.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 40.54 V (5.88%) | 649.5 V | 66.87 V (9.69%) | 52664.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 32.43 V (4.7%) | 657.6 V | 53.5 V (7.75%) | 42131.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 24.32 V (3.53%) | 665.7 V | 40.12 V (5.82%) | 31598.4 W | Drop High |
FAQ — 750 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 750A at 350 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 350m at 690V (voltage drop: 12.16V or 1.76%).
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 · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)63A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)