750 Amp Cable Size at 100 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 100 m (328.1 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 3.48V (0.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.46V (1.66%)
Voltage at Load686.5 VLine Loss: 4514.1 W
Max Power & Breaker896.34 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 100m
| 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 | 1853.29 V (268.59%) | 0.0 V | 3057.07 V (443.05%) | 2407500.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1111.98 V (161.16%) | 0.0 V | 1834.24 V (265.83%) | 1444500.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 694.99 V (100.72%) | 0.0 V | 1146.4 V (166.15%) | 902812.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 463.32 V (67.15%) | 226.7 V | 764.27 V (110.76%) | 601875.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 277.99 V (40.29%) | 412.0 V | 458.56 V (66.46%) | 361125.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 173.75 V (25.18%) | 516.3 V | 286.6 V (41.54%) | 225703.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 111.2 V (16.12%) | 578.8 V | 183.42 V (26.58%) | 144450.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 79.43 V (11.51%) | 610.6 V | 131.02 V (18.99%) | 103178.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 55.6 V (8.06%) | 634.4 V | 91.71 V (13.29%) | 72225.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 39.71 V (5.76%) | 650.3 V | 65.51 V (9.49%) | 51589.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 29.26 V (4.24%) | 660.7 V | 48.27 V (7.0%) | 38013.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 23.17 V (3.36%) | 666.8 V | 38.21 V (5.54%) | 30093.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 18.53 V (2.69%) | 671.5 V | 30.57 V (4.43%) | 24075.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 15.03 V (2.18%) | 675.0 V | 24.79 V (3.59%) | 19520.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 11.58 V (1.68%) | 678.4 V | 19.11 V (2.77%) | 15046.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 9.27 V (1.34%) | 680.7 V | 15.29 V (2.22%) | 12037.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 6.95 V (1.01%) | 683.1 V | 11.46 V (1.66%) | 9028.1 W | Drop High |
FAQ — 750 Amp Cable Size at 100 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 750A at 100 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 100m at 690V (voltage drop: 3.48V or 0.51%).
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 · 100m (690V)16A · 100m (690V)20A · 100m (690V)25A · 100m (690V)32A · 100m (690V)40A · 100m (690V)50A · 100m (690V)63A · 100m (690V)80A · 100m (690V)100A · 100m (690V)125A · 100m (690V)160A · 100m (690V)200A · 100m (690V)