425 Amp Cable Size at 10 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 10 m (32.8 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 0.53V (0.08%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 0.65V (0.09%)
Voltage at Load689.5 VLine Loss: 386.5 W
Max Power & Breaker507.92 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 10m
| 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 | 105.02 V (15.22%) | 585.0 V | 173.23 V (25.11%) | 77307.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 63.01 V (9.13%) | 627.0 V | 103.94 V (15.06%) | 46384.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 39.38 V (5.71%) | 650.6 V | 64.96 V (9.41%) | 28990.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 26.26 V (3.81%) | 663.7 V | 43.31 V (6.28%) | 19326.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 15.75 V (2.28%) | 674.2 V | 25.99 V (3.77%) | 11596.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 9.85 V (1.43%) | 680.2 V | 16.24 V (2.35%) | 7247.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 6.3 V (0.91%) | 683.7 V | 10.39 V (1.51%) | 4638.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.5 V (0.65%) | 685.5 V | 7.42 V (1.08%) | 3313.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 3.15 V (0.46%) | 686.8 V | 5.2 V (0.75%) | 2319.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.25 V (0.33%) | 687.7 V | 3.71 V (0.54%) | 1656.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.66 V (0.24%) | 688.3 V | 2.74 V (0.4%) | 1220.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 1.31 V (0.19%) | 688.7 V | 2.17 V (0.31%) | 966.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.05 V (0.15%) | 688.9 V | 1.73 V (0.25%) | 773.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.85 V (0.12%) | 689.1 V | 1.4 V (0.2%) | 626.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 0.66 V (0.1%) | 689.3 V | 1.08 V (0.16%) | 483.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.53 V (0.08%) | 689.5 V | 0.87 V (0.13%) | 386.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.39 V (0.06%) | 689.6 V | 0.65 V (0.09%) | 289.9 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 10 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 425A at 10 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 10m at 690V (voltage drop: 0.53V or 0.08%).
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 · 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 · 10m (690V)16A · 10m (690V)20A · 10m (690V)25A · 10m (690V)32A · 10m (690V)40A · 10m (690V)50A · 10m (690V)63A · 10m (690V)80A · 10m (690V)100A · 10m (690V)125A · 10m (690V)160A · 10m (690V)200A · 10m (690V)