425 Amp Cable Size at 100 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 100 m (328.1 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 5.25V (1.27%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.5V (1.57%)
Voltage at Load409.7 VLine Loss: 3865.4 W
Max Power & Breaker305.49 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A 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 | 1050.2 V (253.06%) | 0.0 V | 1732.34 V (417.43%) | 773075.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 630.12 V (151.84%) | 0.0 V | 1039.4 V (250.46%) | 463845.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 393.83 V (94.9%) | 21.2 V | 649.63 V (156.54%) | 289903.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 262.55 V (63.27%) | 152.4 V | 433.08 V (104.36%) | 193268.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 157.53 V (37.96%) | 257.5 V | 259.85 V (62.61%) | 115961.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 98.46 V (23.72%) | 316.5 V | 162.41 V (39.13%) | 72475.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 63.01 V (15.18%) | 352.0 V | 103.94 V (25.05%) | 46384.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 45.01 V (10.85%) | 370.0 V | 74.24 V (17.89%) | 33131.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 31.51 V (7.59%) | 383.5 V | 51.97 V (12.52%) | 23192.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 22.5 V (5.42%) | 392.5 V | 37.12 V (8.94%) | 16565.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 16.58 V (4.0%) | 398.4 V | 27.35 V (6.59%) | 12206.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.13 V (3.16%) | 401.9 V | 21.65 V (5.22%) | 9663.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.5 V (2.53%) | 404.5 V | 17.32 V (4.17%) | 7730.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.52 V (2.05%) | 406.5 V | 14.05 V (3.38%) | 6268.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.56 V (1.58%) | 408.4 V | 10.83 V (2.61%) | 4831.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.25 V (1.27%) | 409.7 V | 8.66 V (2.09%) | 3865.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.94 V (0.95%) | 411.1 V | 6.5 V (1.57%) | 2899.0 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 100 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 425A at 100 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 425A over 100m at 415V (voltage drop: 5.25V or 1.27%).
What is the power capacity of 425A at 415V?
At unity power factor, 425A at 415V supports 305.49 kW with a standard 450A circuit breaker.
Related Lengths & Currents (415V)
425A · 5m (415V)425A · 10m (415V)425A · 15m (415V)425A · 20m (415V)425A · 25m (415V)425A · 30m (415V)425A · 35m (415V)425A · 40m (415V)425A · 45m (415V)425A · 50m (415V)425A · 60m (415V)425A · 70m (415V)10A · 100m (415V)16A · 100m (415V)20A · 100m (415V)25A · 100m (415V)32A · 100m (415V)40A · 100m (415V)50A · 100m (415V)63A · 100m (415V)80A · 100m (415V)100A · 100m (415V)125A · 100m (415V)160A · 100m (415V)200A · 100m (415V)