475 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 475 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 7.04V (1.02%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 8.71V (1.26%)
Voltage at Load683.0 VLine Loss: 5794.1 W
Max Power & Breaker567.68 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 120m
| 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 | 1408.5 V (204.13%) | 0.0 V | 2323.37 V (336.72%) | 1158810.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 845.1 V (122.48%) | 0.0 V | 1394.02 V (202.03%) | 695286.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 528.19 V (76.55%) | 161.8 V | 871.26 V (126.27%) | 434553.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 352.13 V (51.03%) | 337.9 V | 580.84 V (84.18%) | 289702.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 211.28 V (30.62%) | 478.7 V | 348.51 V (50.51%) | 173821.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 132.05 V (19.14%) | 558.0 V | 217.82 V (31.57%) | 108638.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 84.51 V (12.25%) | 605.5 V | 139.4 V (20.2%) | 69528.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 60.36 V (8.75%) | 629.6 V | 99.57 V (14.43%) | 49663.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 42.26 V (6.12%) | 647.7 V | 69.7 V (10.1%) | 34764.3 W | Drop High |
| 70 mm² | 192 A | 150 A | 30.18 V (4.37%) | 659.8 V | 49.79 V (7.22%) | 24831.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 22.24 V (3.22%) | 667.8 V | 36.68 V (5.32%) | 18297.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 17.61 V (2.55%) | 672.4 V | 29.04 V (4.21%) | 14485.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 14.09 V (2.04%) | 675.9 V | 23.23 V (3.37%) | 11588.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 11.42 V (1.66%) | 678.6 V | 18.84 V (2.73%) | 9395.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 8.8 V (1.28%) | 681.2 V | 14.52 V (2.1%) | 7242.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.04 V (1.02%) | 683.0 V | 11.62 V (1.68%) | 5794.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 5.28 V (0.77%) | 684.7 V | 8.71 V (1.26%) | 4345.5 W | ✓ OK (≤3%) |
FAQ — 475 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 475A at 120 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 475A over 120m at 690V (voltage drop: 7.04V or 1.02%).
What is the power capacity of 475A at 690V?
At unity power factor, 475A at 690V supports 567.68 kW with a standard 500A circuit breaker.
Related Lengths & Currents (690V)
475A · 5m (690V)475A · 10m (690V)475A · 15m (690V)475A · 20m (690V)475A · 25m (690V)475A · 30m (690V)475A · 35m (690V)475A · 40m (690V)475A · 45m (690V)475A · 50m (690V)475A · 60m (690V)475A · 70m (690V)10A · 120m (690V)16A · 120m (690V)20A · 120m (690V)25A · 120m (690V)32A · 120m (690V)40A · 120m (690V)50A · 120m (690V)63A · 120m (690V)80A · 120m (690V)100A · 120m (690V)125A · 120m (690V)160A · 120m (690V)200A · 120m (690V)