475 Amp Cable Size at 15 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 15 m (49.2 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 0.88V (0.13%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.09V (0.16%)
Voltage at Load689.1 VLine Loss: 724.3 W
Max Power & Breaker567.68 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 15m
| 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 | 176.06 V (25.52%) | 513.9 V | 290.42 V (42.09%) | 144851.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 105.64 V (15.31%) | 584.4 V | 174.25 V (25.25%) | 86910.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 66.02 V (9.57%) | 624.0 V | 108.91 V (15.78%) | 54319.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 44.02 V (6.38%) | 646.0 V | 72.61 V (10.52%) | 36212.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 26.41 V (3.83%) | 663.6 V | 43.56 V (6.31%) | 21727.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 16.51 V (2.39%) | 673.5 V | 27.23 V (3.95%) | 13579.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.56 V (1.53%) | 679.4 V | 17.43 V (2.53%) | 8691.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.55 V (1.09%) | 682.5 V | 12.45 V (1.8%) | 6207.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.28 V (0.77%) | 684.7 V | 8.71 V (1.26%) | 4345.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.77 V (0.55%) | 686.2 V | 6.22 V (0.9%) | 3104.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.78 V (0.4%) | 687.2 V | 4.59 V (0.66%) | 2287.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.2 V (0.32%) | 687.8 V | 3.63 V (0.53%) | 1810.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.76 V (0.26%) | 688.2 V | 2.9 V (0.42%) | 1448.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.43 V (0.21%) | 688.6 V | 2.35 V (0.34%) | 1174.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.1 V (0.16%) | 688.9 V | 1.82 V (0.26%) | 905.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.88 V (0.13%) | 689.1 V | 1.45 V (0.21%) | 724.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.66 V (0.1%) | 689.3 V | 1.09 V (0.16%) | 543.2 W | ✓ OK (≤3%) |
FAQ — 475 Amp Cable Size at 15 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 475A at 15 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 15m at 690V (voltage drop: 0.88V or 0.13%).
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 · 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 · 15m (690V)16A · 15m (690V)20A · 15m (690V)25A · 15m (690V)32A · 15m (690V)40A · 15m (690V)50A · 15m (690V)63A · 15m (690V)80A · 15m (690V)100A · 15m (690V)125A · 15m (690V)160A · 15m (690V)200A · 15m (690V)