475 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 17.61V (2.55%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 21.78V (3.16%)
Voltage at Load672.4 VLine Loss: 14485.1 W
Max Power & Breaker567.68 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 300m
| 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 | 3521.26 V (510.33%) | 0.0 V | 5808.43 V (841.8%) | 2897025.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2112.76 V (306.2%) | 0.0 V | 3485.06 V (505.08%) | 1738215.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1320.47 V (191.37%) | 0.0 V | 2178.16 V (315.68%) | 1086384.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 880.31 V (127.58%) | 0.0 V | 1452.11 V (210.45%) | 724256.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 528.19 V (76.55%) | 161.8 V | 871.26 V (126.27%) | 434553.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 330.12 V (47.84%) | 359.9 V | 544.54 V (78.92%) | 271596.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 211.28 V (30.62%) | 478.7 V | 348.51 V (50.51%) | 173821.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 150.91 V (21.87%) | 539.1 V | 248.93 V (36.08%) | 124158.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 105.64 V (15.31%) | 584.4 V | 174.25 V (25.25%) | 86910.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 75.46 V (10.94%) | 614.5 V | 124.47 V (18.04%) | 62079.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 55.6 V (8.06%) | 634.4 V | 91.71 V (13.29%) | 45742.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 44.02 V (6.38%) | 646.0 V | 72.61 V (10.52%) | 36212.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 35.21 V (5.1%) | 654.8 V | 58.08 V (8.42%) | 28970.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 28.55 V (4.14%) | 661.4 V | 47.1 V (6.83%) | 23489.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 22.01 V (3.19%) | 668.0 V | 36.3 V (5.26%) | 18106.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.61 V (2.55%) | 672.4 V | 29.04 V (4.21%) | 14485.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 13.2 V (1.91%) | 676.8 V | 21.78 V (3.16%) | 10863.8 W | ✓ OK (≤3%) |
FAQ — 475 Amp Cable Size at 300 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 475A at 300 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 300m at 690V (voltage drop: 17.61V or 2.55%).
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 · 300m (690V)16A · 300m (690V)20A · 300m (690V)25A · 300m (690V)32A · 300m (690V)40A · 300m (690V)50A · 300m (690V)63A · 300m (690V)80A · 300m (690V)100A · 300m (690V)125A · 300m (690V)160A · 300m (690V)200A · 300m (690V)