325 Amp Cable Size at 100 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 100 m (328.1 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 6.51V (0.94%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 6.62V (0.96%)
Voltage at Load683.5 VLine Loss: 3665.5 W
Max Power & Breaker388.41 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 100m
| 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 | 803.09 V (116.39%) | 0.0 V | 1324.73 V (191.99%) | 452075.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 481.86 V (69.83%) | 208.1 V | 794.84 V (115.19%) | 271245.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 301.16 V (43.65%) | 388.8 V | 496.77 V (72.0%) | 169528.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 200.77 V (29.1%) | 489.2 V | 331.18 V (48.0%) | 113018.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 120.46 V (17.46%) | 569.5 V | 198.71 V (28.8%) | 67811.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 75.29 V (10.91%) | 614.7 V | 124.19 V (18.0%) | 42382.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 48.19 V (6.98%) | 641.8 V | 79.48 V (11.52%) | 27124.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 34.42 V (4.99%) | 655.6 V | 56.77 V (8.23%) | 19374.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 24.09 V (3.49%) | 665.9 V | 39.74 V (5.76%) | 13562.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 17.21 V (2.49%) | 672.8 V | 28.39 V (4.11%) | 9687.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 12.68 V (1.84%) | 677.3 V | 20.92 V (3.03%) | 7138.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 10.04 V (1.45%) | 680.0 V | 16.56 V (2.4%) | 5650.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 8.03 V (1.16%) | 682.0 V | 13.25 V (1.92%) | 4520.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.51 V (0.94%) | 683.5 V | 10.74 V (1.56%) | 3665.5 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 5.02 V (0.73%) | 685.0 V | 8.28 V (1.2%) | 2825.5 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 4.02 V (0.58%) | 686.0 V | 6.62 V (0.96%) | 2260.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.01 V (0.44%) | 687.0 V | 4.97 V (0.72%) | 1695.3 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 100 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 325A at 100 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 100m at 690V (voltage drop: 6.51V or 0.94%).
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 · 100m (690V)16A · 100m (690V)20A · 100m (690V)25A · 100m (690V)32A · 100m (690V)40A · 100m (690V)50A · 100m (690V)63A · 100m (690V)80A · 100m (690V)100A · 100m (690V)125A · 100m (690V)160A · 100m (690V)200A · 100m (690V)