325 Amp Cable Size at 10 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 10 m (32.8 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 0.65V (0.09%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.66V (0.1%)
Voltage at Load689.3 VLine Loss: 366.5 W
Max Power & Breaker388.41 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 10m
| 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 | 80.31 V (11.64%) | 609.7 V | 132.47 V (19.2%) | 45207.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 48.19 V (6.98%) | 641.8 V | 79.48 V (11.52%) | 27124.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 30.12 V (4.36%) | 659.9 V | 49.68 V (7.2%) | 16952.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 20.08 V (2.91%) | 669.9 V | 33.12 V (4.8%) | 11301.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 12.05 V (1.75%) | 678.0 V | 19.87 V (2.88%) | 6781.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 7.53 V (1.09%) | 682.5 V | 12.42 V (1.8%) | 4238.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 4.82 V (0.7%) | 685.2 V | 7.95 V (1.15%) | 2712.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 3.44 V (0.5%) | 686.6 V | 5.68 V (0.82%) | 1937.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 2.41 V (0.35%) | 687.6 V | 3.97 V (0.58%) | 1356.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 1.72 V (0.25%) | 688.3 V | 2.84 V (0.41%) | 968.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.27 V (0.18%) | 688.7 V | 2.09 V (0.3%) | 713.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 1.0 V (0.15%) | 689.0 V | 1.66 V (0.24%) | 565.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.8 V (0.12%) | 689.2 V | 1.32 V (0.19%) | 452.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.65 V (0.09%) | 689.3 V | 1.07 V (0.16%) | 366.5 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.5 V (0.07%) | 689.5 V | 0.83 V (0.12%) | 282.5 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.4 V (0.06%) | 689.6 V | 0.66 V (0.1%) | 226.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.3 V (0.04%) | 689.7 V | 0.5 V (0.07%) | 169.5 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 10 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 325A at 10 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 10m at 690V (voltage drop: 0.65V or 0.09%).
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 · 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 · 10m (690V)16A · 10m (690V)20A · 10m (690V)25A · 10m (690V)32A · 10m (690V)40A · 10m (690V)50A · 10m (690V)63A · 10m (690V)80A · 10m (690V)100A · 10m (690V)125A · 10m (690V)160A · 10m (690V)200A · 10m (690V)