425 Amp Cable Size at 350 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 350 m (1148.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.89V (1.66%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 22.74V (5.48%)
Voltage at Load408.1 VLine Loss: 5073.3 W
Max Power & Breaker305.49 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 350m
| 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 | 3675.7 V (885.71%) | 0.0 V | 6063.19 V (1461.01%) | 2705762.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2205.42 V (531.43%) | 0.0 V | 3637.91 V (876.61%) | 1623457.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 1378.39 V (332.14%) | 0.0 V | 2273.7 V (547.88%) | 1014660.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 918.93 V (221.43%) | 0.0 V | 1515.8 V (365.25%) | 676440.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 551.36 V (132.86%) | 0.0 V | 909.48 V (219.15%) | 405864.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 344.6 V (83.04%) | 70.4 V | 568.42 V (136.97%) | 253665.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 220.54 V (53.14%) | 194.5 V | 363.79 V (87.66%) | 162345.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 157.53 V (37.96%) | 257.5 V | 259.85 V (62.61%) | 115961.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 110.27 V (26.57%) | 304.7 V | 181.9 V (43.83%) | 81172.9 W | Drop High |
| 70 mm² | 192 A | 150 A | 78.77 V (18.98%) | 336.2 V | 129.93 V (31.31%) | 57980.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 58.04 V (13.98%) | 357.0 V | 95.73 V (23.07%) | 42722.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 45.95 V (11.07%) | 369.1 V | 75.79 V (18.26%) | 33822.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 36.76 V (8.86%) | 378.2 V | 60.63 V (14.61%) | 27057.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 29.8 V (7.18%) | 385.2 V | 49.16 V (11.85%) | 21938.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 22.97 V (5.54%) | 392.0 V | 37.89 V (9.13%) | 16911.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 18.38 V (4.43%) | 396.6 V | 30.32 V (7.31%) | 13528.8 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 13.78 V (3.32%) | 401.2 V | 22.74 V (5.48%) | 10146.6 W | ~ ≤5% |
FAQ — 425 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 425A at 350 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 350m at 415V (voltage drop: 6.89V or 1.66%).
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 · 350m (415V)16A · 350m (415V)20A · 350m (415V)25A · 350m (415V)32A · 350m (415V)40A · 350m (415V)50A · 350m (415V)63A · 350m (415V)80A · 350m (415V)100A · 350m (415V)125A · 350m (415V)160A · 350m (415V)200A · 350m (415V)