325 Amp Cable Size at 350 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 350 m (1148.3 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 17.57V (2.55%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 17.39V (2.52%)
Voltage at Load672.4 VLine Loss: 9889.1 W
Max Power & Breaker388.41 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 350m
| 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 | 2810.83 V (407.37%) | 0.0 V | 4636.56 V (671.96%) | 1582262.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1686.5 V (244.42%) | 0.0 V | 2781.93 V (403.18%) | 949357.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 1054.06 V (152.76%) | 0.0 V | 1738.71 V (251.99%) | 593348.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 702.71 V (101.84%) | 0.0 V | 1159.14 V (167.99%) | 395565.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 421.62 V (61.1%) | 268.4 V | 695.48 V (100.79%) | 237339.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 263.52 V (38.19%) | 426.5 V | 434.68 V (63.0%) | 148337.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 168.65 V (24.44%) | 521.4 V | 278.19 V (40.32%) | 94935.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 120.46 V (17.46%) | 569.5 V | 198.71 V (28.8%) | 67811.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 84.32 V (12.22%) | 605.7 V | 139.1 V (20.16%) | 47467.9 W | Drop High |
| 70 mm² | 192 A | 150 A | 60.23 V (8.73%) | 629.8 V | 99.35 V (14.4%) | 33905.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 44.38 V (6.43%) | 645.6 V | 73.21 V (10.61%) | 24983.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 35.14 V (5.09%) | 654.9 V | 57.96 V (8.4%) | 19778.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 28.11 V (4.07%) | 661.9 V | 46.37 V (6.72%) | 15822.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 22.79 V (3.3%) | 667.2 V | 37.59 V (5.45%) | 12829.2 W | ~ ≤5% |
| 240 mm² | 415 A | 324 A | 17.57 V (2.55%) | 672.4 V | 28.98 V (4.2%) | 9889.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 14.05 V (2.04%) | 675.9 V | 23.18 V (3.36%) | 7911.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 10.54 V (1.53%) | 679.5 V | 17.39 V (2.52%) | 5933.5 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 325A at 350 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 325A over 350m at 690V (voltage drop: 17.57V or 2.55%).
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 · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)63A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)