425 Amp Cable Size at 500 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 500 m (1640.4 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 9.85V (2.37%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 32.48V (7.83%)
Voltage at Load405.1 VLine Loss: 7247.6 W
Max Power & Breaker305.49 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 500m
| 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 | 5251.0 V (1265.3%) | 0.0 V | 8661.7 V (2087.16%) | 3865375.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3150.6 V (759.18%) | 0.0 V | 5197.02 V (1252.29%) | 2319225.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1969.13 V (474.49%) | 0.0 V | 3248.14 V (782.68%) | 1449515.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 1312.75 V (316.33%) | 0.0 V | 2165.42 V (521.79%) | 966343.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 787.65 V (189.8%) | 0.0 V | 1299.25 V (313.07%) | 579806.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 492.28 V (118.62%) | 0.0 V | 812.03 V (195.67%) | 362378.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 315.06 V (75.92%) | 99.9 V | 519.7 V (125.23%) | 231922.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 225.04 V (54.23%) | 190.0 V | 371.22 V (89.45%) | 165658.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 157.53 V (37.96%) | 257.5 V | 259.85 V (62.61%) | 115961.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 112.52 V (27.11%) | 302.5 V | 185.61 V (44.72%) | 82829.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 82.91 V (19.98%) | 332.1 V | 136.76 V (32.96%) | 61032.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 65.64 V (15.82%) | 349.4 V | 108.27 V (26.09%) | 48317.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 52.51 V (12.65%) | 362.5 V | 86.62 V (20.87%) | 38653.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 42.58 V (10.26%) | 372.4 V | 70.23 V (16.92%) | 31340.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 32.82 V (7.91%) | 382.2 V | 54.14 V (13.04%) | 24158.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 26.26 V (6.33%) | 388.7 V | 43.31 V (10.44%) | 19326.9 W | Drop High |
| 400 mm² | 570 A | 445 A | 19.69 V (4.74%) | 395.3 V | 32.48 V (7.83%) | 14495.2 W | ~ ≤5% |
FAQ — 425 Amp Cable Size at 500 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 425A at 500 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 425A over 500m at 415V (voltage drop: 9.85V or 2.37%).
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 · 500m (415V)16A · 500m (415V)20A · 500m (415V)25A · 500m (415V)32A · 500m (415V)40A · 500m (415V)50A · 500m (415V)63A · 500m (415V)80A · 500m (415V)100A · 500m (415V)125A · 500m (415V)160A · 500m (415V)200A · 500m (415V)