425 Amp Cable Size at 30 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 30 m (98.4 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 1.58V (0.38%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.95V (0.47%)
Voltage at Load413.4 VLine Loss: 1159.6 W
Max Power & Breaker305.49 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 30m
| 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 | 315.06 V (75.92%) | 99.9 V | 519.7 V (125.23%) | 231922.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 189.04 V (45.55%) | 226.0 V | 311.82 V (75.14%) | 139153.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 118.15 V (28.47%) | 296.9 V | 194.89 V (46.96%) | 86970.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 78.77 V (18.98%) | 336.2 V | 129.93 V (31.31%) | 57980.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 47.26 V (11.39%) | 367.7 V | 77.96 V (18.78%) | 34788.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 29.54 V (7.12%) | 385.5 V | 48.72 V (11.74%) | 21742.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 18.9 V (4.56%) | 396.1 V | 31.18 V (7.51%) | 13915.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 13.5 V (3.25%) | 401.5 V | 22.27 V (5.37%) | 9939.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 9.45 V (2.28%) | 405.5 V | 15.59 V (3.76%) | 6957.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 6.75 V (1.63%) | 408.2 V | 11.14 V (2.68%) | 4969.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 4.97 V (1.2%) | 410.0 V | 8.21 V (1.98%) | 3661.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 3.94 V (0.95%) | 411.1 V | 6.5 V (1.57%) | 2899.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.15 V (0.76%) | 411.8 V | 5.2 V (1.25%) | 2319.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.55 V (0.62%) | 412.4 V | 4.21 V (1.02%) | 1880.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.97 V (0.47%) | 413.0 V | 3.25 V (0.78%) | 1449.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 1.58 V (0.38%) | 413.4 V | 2.6 V (0.63%) | 1159.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.18 V (0.28%) | 413.8 V | 1.95 V (0.47%) | 869.7 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 30 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 425A at 30 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 30m at 415V (voltage drop: 1.58V or 0.38%).
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 · 35m (415V)425A · 40m (415V)425A · 45m (415V)425A · 50m (415V)425A · 60m (415V)425A · 70m (415V)10A · 30m (415V)16A · 30m (415V)20A · 30m (415V)25A · 30m (415V)32A · 30m (415V)40A · 30m (415V)50A · 30m (415V)63A · 30m (415V)80A · 30m (415V)100A · 30m (415V)125A · 30m (415V)160A · 30m (415V)200A · 30m (415V)