475 Amp Cable Size at 250 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 475 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 11.0V (2.65%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 18.15V (4.37%)
Voltage at Load404.0 VLine Loss: 9053.2 W
Max Power & Breaker341.43 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 250m
| 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 | 2934.38 V (707.08%) | 0.0 V | 4840.36 V (1166.35%) | 2414187.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1760.63 V (424.25%) | 0.0 V | 2904.22 V (699.81%) | 1448512.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 1100.39 V (265.16%) | 0.0 V | 1815.14 V (437.38%) | 905320.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 733.6 V (176.77%) | 0.0 V | 1210.09 V (291.59%) | 603546.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 440.16 V (106.06%) | 0.0 V | 726.05 V (174.95%) | 362128.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 275.1 V (66.29%) | 139.9 V | 453.78 V (109.35%) | 226330.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 176.06 V (42.42%) | 238.9 V | 290.42 V (69.98%) | 144851.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 125.76 V (30.3%) | 289.2 V | 207.44 V (49.99%) | 103465.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 88.03 V (21.21%) | 327.0 V | 145.21 V (34.99%) | 72425.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 62.88 V (15.15%) | 352.1 V | 103.72 V (24.99%) | 51732.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 46.33 V (11.16%) | 368.7 V | 76.43 V (18.42%) | 38118.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 36.68 V (8.84%) | 378.3 V | 60.5 V (14.58%) | 30177.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 29.34 V (7.07%) | 385.7 V | 48.4 V (11.66%) | 24141.9 W | Drop High |
| 185 mm² | 353 A | 275 A | 23.79 V (5.73%) | 391.2 V | 39.25 V (9.46%) | 19574.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 18.34 V (4.42%) | 396.7 V | 30.25 V (7.29%) | 15088.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 14.67 V (3.54%) | 400.3 V | 24.2 V (5.83%) | 12070.9 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 11.0 V (2.65%) | 404.0 V | 18.15 V (4.37%) | 9053.2 W | ✓ OK (≤3%) |
FAQ — 475 Amp Cable Size at 250 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 475A at 250 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 475A over 250m at 415V (voltage drop: 11.0V or 2.65%).
What is the power capacity of 475A at 415V?
At unity power factor, 475A at 415V supports 341.43 kW with a standard 500A circuit breaker.
Related Lengths & Currents (415V)
475A · 5m (415V)475A · 10m (415V)475A · 15m (415V)475A · 20m (415V)475A · 25m (415V)475A · 30m (415V)475A · 35m (415V)475A · 40m (415V)475A · 45m (415V)475A · 50m (415V)475A · 60m (415V)475A · 70m (415V)10A · 250m (415V)16A · 250m (415V)20A · 250m (415V)25A · 250m (415V)32A · 250m (415V)40A · 250m (415V)50A · 250m (415V)63A · 250m (415V)80A · 250m (415V)100A · 250m (415V)125A · 250m (415V)160A · 250m (415V)200A · 250m (415V)