325 Amp Cable Size at 50 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 325 A over 50 m (164.0 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 3.26V (0.78%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 3.31V (0.8%)
Voltage at Load411.7 VLine Loss: 1832.7 W
Max Power & Breaker233.61 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 50m
| 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 | 401.55 V (96.76%) | 13.5 V | 662.37 V (159.61%) | 226037.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 240.93 V (58.06%) | 174.1 V | 397.42 V (95.76%) | 135622.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 150.58 V (36.28%) | 264.4 V | 248.39 V (59.85%) | 84764.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 100.39 V (24.19%) | 314.6 V | 165.59 V (39.9%) | 56509.4 W | Drop High |
| 10 mm² | 57 A | 44 A | 60.23 V (14.51%) | 354.8 V | 99.35 V (23.94%) | 33905.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 37.65 V (9.07%) | 377.4 V | 62.1 V (14.96%) | 21191.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 24.09 V (5.81%) | 390.9 V | 39.74 V (9.58%) | 13562.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 17.21 V (4.15%) | 397.8 V | 28.39 V (6.84%) | 9687.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 12.05 V (2.9%) | 403.0 V | 19.87 V (4.79%) | 6781.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 8.6 V (2.07%) | 406.4 V | 14.19 V (3.42%) | 4843.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 6.34 V (1.53%) | 408.7 V | 10.46 V (2.52%) | 3569.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 5.02 V (1.21%) | 410.0 V | 8.28 V (2.0%) | 2825.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 4.02 V (0.97%) | 411.0 V | 6.62 V (1.6%) | 2260.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 3.26 V (0.78%) | 411.7 V | 5.37 V (1.29%) | 1832.7 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 2.51 V (0.6%) | 412.5 V | 4.14 V (1.0%) | 1412.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.01 V (0.48%) | 413.0 V | 3.31 V (0.8%) | 1130.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.51 V (0.36%) | 413.5 V | 2.48 V (0.6%) | 847.6 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 50 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 325A at 50 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 325A over 50m at 415V (voltage drop: 3.26V or 0.78%).
What is the power capacity of 325A at 415V?
At unity power factor, 325A at 415V supports 233.61 kW with a standard 350A circuit breaker.
Related Lengths & Currents (415V)
325A · 5m (415V)325A · 10m (415V)325A · 15m (415V)325A · 20m (415V)325A · 25m (415V)325A · 30m (415V)325A · 35m (415V)325A · 40m (415V)325A · 45m (415V)325A · 60m (415V)325A · 70m (415V)10A · 50m (415V)16A · 50m (415V)20A · 50m (415V)25A · 50m (415V)32A · 50m (415V)40A · 50m (415V)50A · 50m (415V)63A · 50m (415V)80A · 50m (415V)100A · 50m (415V)125A · 50m (415V)160A · 50m (415V)200A · 50m (415V)