325 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 325 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 11.4V (1.65%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 11.59V (1.68%)
Voltage at Load678.6 VLine Loss: 6414.6 W
Max Power & Breaker388.41 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 175m
| 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 | 1405.41 V (203.68%) | 0.0 V | 2318.28 V (335.98%) | 791131.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 843.25 V (122.21%) | 0.0 V | 1390.97 V (201.59%) | 474678.7 W | Drop High |
| 4 mm² | 32 A | 25 A | 527.03 V (76.38%) | 163.0 V | 869.35 V (125.99%) | 296674.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 351.35 V (50.92%) | 338.6 V | 579.57 V (84.0%) | 197782.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 210.81 V (30.55%) | 479.2 V | 347.74 V (50.4%) | 118669.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 131.76 V (19.1%) | 558.2 V | 217.34 V (31.5%) | 74168.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 84.32 V (12.22%) | 605.7 V | 139.1 V (20.16%) | 47467.9 W | Drop High |
| 35 mm² | 125 A | 97 A | 60.23 V (8.73%) | 629.8 V | 99.35 V (14.4%) | 33905.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 42.16 V (6.11%) | 647.8 V | 69.55 V (10.08%) | 23733.9 W | Drop High |
| 70 mm² | 192 A | 150 A | 30.12 V (4.36%) | 659.9 V | 49.68 V (7.2%) | 16952.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 22.19 V (3.22%) | 667.8 V | 36.6 V (5.3%) | 12491.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 17.57 V (2.55%) | 672.4 V | 28.98 V (4.2%) | 9889.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 14.05 V (2.04%) | 675.9 V | 23.18 V (3.36%) | 7911.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 11.4 V (1.65%) | 678.6 V | 18.8 V (2.72%) | 6414.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 8.78 V (1.27%) | 681.2 V | 14.49 V (2.1%) | 4944.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 7.03 V (1.02%) | 683.0 V | 11.59 V (1.68%) | 3955.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 5.27 V (0.76%) | 684.7 V | 8.69 V (1.26%) | 2966.7 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 325A at 175 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 325A over 175m at 690V (voltage drop: 11.4V or 1.65%).
What is the power capacity of 325A at 690V?
At unity power factor, 325A at 690V supports 388.41 kW with a standard 350A circuit breaker.
Related Lengths & Currents (690V)
325A · 5m (690V)325A · 10m (690V)325A · 15m (690V)325A · 20m (690V)325A · 25m (690V)325A · 30m (690V)325A · 35m (690V)325A · 40m (690V)325A · 45m (690V)325A · 50m (690V)325A · 60m (690V)325A · 70m (690V)10A · 175m (690V)16A · 175m (690V)20A · 175m (690V)25A · 175m (690V)32A · 175m (690V)40A · 175m (690V)50A · 175m (690V)63A · 175m (690V)80A · 175m (690V)100A · 175m (690V)125A · 175m (690V)160A · 175m (690V)200A · 175m (690V)