325 Amp Cable Size at 150 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 150 m (492.1 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 9.77V (1.42%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 9.94V (1.44%)
Voltage at Load680.2 VLine Loss: 5498.2 W
Max Power & Breaker388.41 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 150m
| 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 | 1204.64 V (174.59%) | 0.0 V | 1987.1 V (287.98%) | 678112.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 722.78 V (104.75%) | 0.0 V | 1192.26 V (172.79%) | 406867.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 451.74 V (65.47%) | 238.3 V | 745.16 V (107.99%) | 254292.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 301.16 V (43.65%) | 388.8 V | 496.77 V (72.0%) | 169528.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 180.7 V (26.19%) | 509.3 V | 298.06 V (43.2%) | 101716.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 112.94 V (16.37%) | 577.1 V | 186.29 V (27.0%) | 63573.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 72.28 V (10.48%) | 617.7 V | 119.23 V (17.28%) | 40686.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 51.63 V (7.48%) | 638.4 V | 85.16 V (12.34%) | 29062.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 36.14 V (5.24%) | 653.9 V | 59.61 V (8.64%) | 20343.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 25.81 V (3.74%) | 664.2 V | 42.58 V (6.17%) | 14531.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 19.02 V (2.76%) | 671.0 V | 31.38 V (4.55%) | 10707.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 15.06 V (2.18%) | 674.9 V | 24.84 V (3.6%) | 8476.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 12.05 V (1.75%) | 678.0 V | 19.87 V (2.88%) | 6781.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.77 V (1.42%) | 680.2 V | 16.11 V (2.34%) | 5498.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 7.53 V (1.09%) | 682.5 V | 12.42 V (1.8%) | 4238.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 6.02 V (0.87%) | 684.0 V | 9.94 V (1.44%) | 3390.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 4.52 V (0.65%) | 685.5 V | 7.45 V (1.08%) | 2542.9 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 150 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 325A at 150 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 150m at 690V (voltage drop: 9.77V or 1.42%).
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 · 150m (690V)16A · 150m (690V)20A · 150m (690V)25A · 150m (690V)32A · 150m (690V)40A · 150m (690V)50A · 150m (690V)63A · 150m (690V)80A · 150m (690V)100A · 150m (690V)125A · 150m (690V)160A · 150m (690V)200A · 150m (690V)