750 Amp Cable Size at 50 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 50 m (164.0 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.74V (0.25%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 5.73V (0.83%)
Voltage at Load688.3 VLine Loss: 2257.1 W
Max Power & Breaker896.34 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 50m
| 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 | 926.65 V (134.3%) | 0.0 V | 1528.53 V (221.53%) | 1203750.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 555.99 V (80.58%) | 134.0 V | 917.12 V (132.92%) | 722250.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 347.49 V (50.36%) | 342.5 V | 573.2 V (83.07%) | 451406.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 231.66 V (33.57%) | 458.3 V | 382.13 V (55.38%) | 300937.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 139.0 V (20.14%) | 551.0 V | 229.28 V (33.23%) | 180562.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 86.87 V (12.59%) | 603.1 V | 143.3 V (20.77%) | 112851.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 55.6 V (8.06%) | 634.4 V | 91.71 V (13.29%) | 72225.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 39.71 V (5.76%) | 650.3 V | 65.51 V (9.49%) | 51589.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 27.8 V (4.03%) | 662.2 V | 45.86 V (6.65%) | 36112.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 19.86 V (2.88%) | 670.1 V | 32.75 V (4.75%) | 25794.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 14.63 V (2.12%) | 675.4 V | 24.13 V (3.5%) | 19006.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 11.58 V (1.68%) | 678.4 V | 19.11 V (2.77%) | 15046.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 9.27 V (1.34%) | 680.7 V | 15.29 V (2.22%) | 12037.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 7.51 V (1.09%) | 682.5 V | 12.39 V (1.8%) | 9760.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 5.79 V (0.84%) | 684.2 V | 9.55 V (1.38%) | 7523.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.63 V (0.67%) | 685.4 V | 7.64 V (1.11%) | 6018.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.47 V (0.5%) | 686.5 V | 5.73 V (0.83%) | 4514.1 W | Drop High |
FAQ — 750 Amp Cable Size at 50 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 750A at 50 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 50m at 690V (voltage drop: 1.74V or 0.25%).
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 · 60m (690V)750A · 70m (690V)10A · 50m (690V)16A · 50m (690V)20A · 50m (690V)25A · 50m (690V)32A · 50m (690V)40A · 50m (690V)50A · 50m (690V)63A · 50m (690V)80A · 50m (690V)100A · 50m (690V)125A · 50m (690V)160A · 50m (690V)200A · 50m (690V)