750 Amp Cable Size at 45 Meters (415V Three-Phase (UK / Australia 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 (0.38%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 5.16V (1.24%)
Voltage at Load413.4 VLine Loss: 2031.3 W
Max Power & Breaker539.1 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 (200.96%) | 0.0 V | 1375.68 V (331.49%) | 1083375.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 500.39 V (120.58%) | 0.0 V | 825.41 V (198.89%) | 650025.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 312.74 V (75.36%) | 102.3 V | 515.88 V (124.31%) | 406265.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 208.5 V (50.24%) | 206.5 V | 343.92 V (82.87%) | 270843.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 125.1 V (30.14%) | 289.9 V | 206.35 V (49.72%) | 162506.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 78.19 V (18.84%) | 336.8 V | 128.97 V (31.08%) | 101566.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 50.04 V (12.06%) | 365.0 V | 82.54 V (19.89%) | 65002.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 35.74 V (8.61%) | 379.3 V | 58.96 V (14.21%) | 46430.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 25.02 V (6.03%) | 390.0 V | 41.27 V (9.94%) | 32501.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 17.87 V (4.31%) | 397.1 V | 29.48 V (7.1%) | 23215.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 13.17 V (3.17%) | 401.8 V | 21.72 V (5.23%) | 17105.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 10.42 V (2.51%) | 404.6 V | 17.2 V (4.14%) | 13542.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 8.34 V (2.01%) | 406.7 V | 13.76 V (3.31%) | 10833.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.76 V (1.63%) | 408.2 V | 11.15 V (2.69%) | 8784.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 5.21 V (1.26%) | 409.8 V | 8.6 V (2.07%) | 6771.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.17 V (1.0%) | 410.8 V | 6.88 V (1.66%) | 5416.9 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.13 V (0.75%) | 411.9 V | 5.16 V (1.24%) | 4062.7 W | Drop High |
FAQ — 750 Amp Cable Size at 45 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 750A at 45 meters (415V)?
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 415V (voltage drop: 1.56V or 0.38%).
What is the power capacity of 750A at 415V?
At unity power factor, 750A at 415V supports 539.1 kW with a standard 800A circuit breaker.
Related Lengths & Currents (415V)
750A · 5m (415V)750A · 10m (415V)750A · 15m (415V)750A · 20m (415V)750A · 25m (415V)750A · 30m (415V)750A · 35m (415V)750A · 40m (415V)750A · 50m (415V)750A · 60m (415V)750A · 70m (415V)10A · 45m (415V)16A · 45m (415V)20A · 45m (415V)25A · 45m (415V)32A · 45m (415V)40A · 45m (415V)50A · 45m (415V)63A · 45m (415V)80A · 45m (415V)100A · 45m (415V)125A · 45m (415V)160A · 45m (415V)200A · 45m (415V)