475 Amp Cable Size at 80 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 80 m (262.5 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 4.7V (0.68%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 5.81V (0.84%)
Voltage at Load685.3 VLine Loss: 3862.7 W
Max Power & Breaker567.68 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 80m
| 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 | 939.0 V (136.09%) | 0.0 V | 1548.92 V (224.48%) | 772540.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 563.4 V (81.65%) | 126.6 V | 929.35 V (134.69%) | 463524.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 352.13 V (51.03%) | 337.9 V | 580.84 V (84.18%) | 289702.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 234.75 V (34.02%) | 455.2 V | 387.23 V (56.12%) | 193135.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 140.85 V (20.41%) | 549.1 V | 232.34 V (33.67%) | 115881.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 88.03 V (12.76%) | 602.0 V | 145.21 V (21.05%) | 72425.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 56.34 V (8.17%) | 633.7 V | 92.93 V (13.47%) | 46352.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 40.24 V (5.83%) | 649.8 V | 66.38 V (9.62%) | 33108.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 28.17 V (4.08%) | 661.8 V | 46.47 V (6.73%) | 23176.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 20.12 V (2.92%) | 669.9 V | 33.19 V (4.81%) | 16554.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 14.83 V (2.15%) | 675.2 V | 24.46 V (3.54%) | 12198.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 11.74 V (1.7%) | 678.3 V | 19.36 V (2.81%) | 9656.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 9.39 V (1.36%) | 680.6 V | 15.49 V (2.24%) | 7725.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 7.61 V (1.1%) | 682.4 V | 12.56 V (1.82%) | 6263.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 5.87 V (0.85%) | 684.1 V | 9.68 V (1.4%) | 4828.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.7 V (0.68%) | 685.3 V | 7.74 V (1.12%) | 3862.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.52 V (0.51%) | 686.5 V | 5.81 V (0.84%) | 2897.0 W | ✓ OK (≤3%) |
FAQ — 475 Amp Cable Size at 80 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 475A at 80 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 80m at 690V (voltage drop: 4.7V or 0.68%).
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 · 80m (690V)16A · 80m (690V)20A · 80m (690V)25A · 80m (690V)32A · 80m (690V)40A · 80m (690V)50A · 80m (690V)63A · 80m (690V)80A · 80m (690V)100A · 80m (690V)125A · 80m (690V)160A · 80m (690V)200A · 80m (690V)