750 Amp Cable Size at 45 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 45 m (147.6 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.56V (0.23%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 5.16V (0.75%)
Voltage at Load688.4 VLine Loss: 2031.3 W
Max Power & Breaker896.34 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 45m
| 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 | 833.98 V (120.87%) | 0.0 V | 1375.68 V (199.37%) | 1083375.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 500.39 V (72.52%) | 189.6 V | 825.41 V (119.62%) | 650025.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 312.74 V (45.33%) | 377.3 V | 515.88 V (74.77%) | 406265.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 208.5 V (30.22%) | 481.5 V | 343.92 V (49.84%) | 270843.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 125.1 V (18.13%) | 564.9 V | 206.35 V (29.91%) | 162506.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 78.19 V (11.33%) | 611.8 V | 128.97 V (18.69%) | 101566.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 50.04 V (7.25%) | 640.0 V | 82.54 V (11.96%) | 65002.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 35.74 V (5.18%) | 654.3 V | 58.96 V (8.54%) | 46430.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 25.02 V (3.63%) | 665.0 V | 41.27 V (5.98%) | 32501.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 17.87 V (2.59%) | 672.1 V | 29.48 V (4.27%) | 23215.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 13.17 V (1.91%) | 676.8 V | 21.72 V (3.15%) | 17105.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 10.42 V (1.51%) | 679.6 V | 17.2 V (2.49%) | 13542.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 8.34 V (1.21%) | 681.7 V | 13.76 V (1.99%) | 10833.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.76 V (0.98%) | 683.2 V | 11.15 V (1.62%) | 8784.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 5.21 V (0.76%) | 684.8 V | 8.6 V (1.25%) | 6771.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.17 V (0.6%) | 685.8 V | 6.88 V (1.0%) | 5416.9 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.13 V (0.45%) | 686.9 V | 5.16 V (0.75%) | 4062.7 W | Drop High |
FAQ — 750 Amp Cable Size at 45 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 750A at 45 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 45m at 690V (voltage drop: 1.56V or 0.23%).
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 · 50m (690V)750A · 60m (690V)750A · 70m (690V)10A · 45m (690V)16A · 45m (690V)20A · 45m (690V)25A · 45m (690V)32A · 45m (690V)40A · 45m (690V)50A · 45m (690V)63A · 45m (690V)80A · 45m (690V)100A · 45m (690V)125A · 45m (690V)160A · 45m (690V)200A · 45m (690V)