425 Amp Cable Size at 100 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 100 m (328.1 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 5.25V (0.76%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.5V (0.94%)
Voltage at Load684.7 VLine Loss: 3865.4 W
Max Power & Breaker507.92 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 100m
| 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 | 1050.2 V (152.2%) | 0.0 V | 1732.34 V (251.06%) | 773075.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 630.12 V (91.32%) | 59.9 V | 1039.4 V (150.64%) | 463845.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 393.83 V (57.08%) | 296.2 V | 649.63 V (94.15%) | 289903.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 262.55 V (38.05%) | 427.4 V | 433.08 V (62.77%) | 193268.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 157.53 V (22.83%) | 532.5 V | 259.85 V (37.66%) | 115961.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 98.46 V (14.27%) | 591.5 V | 162.41 V (23.54%) | 72475.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 63.01 V (9.13%) | 627.0 V | 103.94 V (15.06%) | 46384.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 45.01 V (6.52%) | 645.0 V | 74.24 V (10.76%) | 33131.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 31.51 V (4.57%) | 658.5 V | 51.97 V (7.53%) | 23192.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 22.5 V (3.26%) | 667.5 V | 37.12 V (5.38%) | 16565.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 16.58 V (2.4%) | 673.4 V | 27.35 V (3.96%) | 12206.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.13 V (1.9%) | 676.9 V | 21.65 V (3.14%) | 9663.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.5 V (1.52%) | 679.5 V | 17.32 V (2.51%) | 7730.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.52 V (1.23%) | 681.5 V | 14.05 V (2.04%) | 6268.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.56 V (0.95%) | 683.4 V | 10.83 V (1.57%) | 4831.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.25 V (0.76%) | 684.7 V | 8.66 V (1.26%) | 3865.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.94 V (0.57%) | 686.1 V | 6.5 V (0.94%) | 2899.0 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 100 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 425A at 100 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 100m at 690V (voltage drop: 5.25V or 0.76%).
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 · 100m (690V)16A · 100m (690V)20A · 100m (690V)25A · 100m (690V)32A · 100m (690V)40A · 100m (690V)50A · 100m (690V)63A · 100m (690V)80A · 100m (690V)100A · 100m (690V)125A · 100m (690V)160A · 100m (690V)200A · 100m (690V)