425 Amp Cable Size at 150 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 150 m (492.1 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 7.88V (1.14%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.74V (1.41%)
Voltage at Load682.1 VLine Loss: 5798.1 W
Max Power & Breaker507.92 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 150m
| 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 | 1575.3 V (228.3%) | 0.0 V | 2598.51 V (376.6%) | 1159612.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 945.18 V (136.98%) | 0.0 V | 1559.11 V (225.96%) | 695767.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 590.74 V (85.61%) | 99.3 V | 974.44 V (141.22%) | 434854.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 393.83 V (57.08%) | 296.2 V | 649.63 V (94.15%) | 289903.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 236.3 V (34.25%) | 453.7 V | 389.78 V (56.49%) | 173941.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 147.68 V (21.4%) | 542.3 V | 243.61 V (35.31%) | 108713.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 94.52 V (13.7%) | 595.5 V | 155.91 V (22.6%) | 69576.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 67.51 V (9.78%) | 622.5 V | 111.36 V (16.14%) | 49697.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 47.26 V (6.85%) | 642.7 V | 77.96 V (11.3%) | 34788.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 33.76 V (4.89%) | 656.2 V | 55.68 V (8.07%) | 24848.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 24.87 V (3.6%) | 665.1 V | 41.03 V (5.95%) | 18309.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 19.69 V (2.85%) | 670.3 V | 32.48 V (4.71%) | 14495.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 15.75 V (2.28%) | 674.2 V | 25.99 V (3.77%) | 11596.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 12.77 V (1.85%) | 677.2 V | 21.07 V (3.05%) | 9402.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 9.85 V (1.43%) | 680.2 V | 16.24 V (2.35%) | 7247.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.88 V (1.14%) | 682.1 V | 12.99 V (1.88%) | 5798.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 5.91 V (0.86%) | 684.1 V | 9.74 V (1.41%) | 4348.5 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 150 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 425A at 150 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 425A over 150m at 690V (voltage drop: 7.88V or 1.14%).
What is the power capacity of 425A at 690V?
At unity power factor, 425A at 690V supports 507.92 kW with a standard 450A circuit breaker.
Related Lengths & Currents (690V)
425A · 5m (690V)425A · 10m (690V)425A · 15m (690V)425A · 20m (690V)425A · 25m (690V)425A · 30m (690V)425A · 35m (690V)425A · 40m (690V)425A · 45m (690V)425A · 50m (690V)425A · 60m (690V)425A · 70m (690V)10A · 150m (690V)16A · 150m (690V)20A · 150m (690V)25A · 150m (690V)32A · 150m (690V)40A · 150m (690V)50A · 150m (690V)63A · 150m (690V)80A · 150m (690V)100A · 150m (690V)125A · 150m (690V)160A · 150m (690V)200A · 150m (690V)