325 Amp Cable Size at 35 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 35 m (114.8 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 2.28V (0.55%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 2.32V (0.56%)
Voltage at Load412.7 VLine Loss: 1282.9 W
Max Power & Breaker233.61 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 35m
| 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 | 281.08 V (67.73%) | 133.9 V | 463.66 V (111.72%) | 158226.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 168.65 V (40.64%) | 246.4 V | 278.19 V (67.03%) | 94935.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 105.41 V (25.4%) | 309.6 V | 173.87 V (41.9%) | 59334.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 70.27 V (16.93%) | 344.7 V | 115.91 V (27.93%) | 39556.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 42.16 V (10.16%) | 372.8 V | 69.55 V (16.76%) | 23733.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 26.35 V (6.35%) | 388.6 V | 43.47 V (10.47%) | 14833.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 16.86 V (4.06%) | 398.1 V | 27.82 V (6.7%) | 9493.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 12.05 V (2.9%) | 403.0 V | 19.87 V (4.79%) | 6781.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 8.43 V (2.03%) | 406.6 V | 13.91 V (3.35%) | 4746.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 6.02 V (1.45%) | 409.0 V | 9.94 V (2.39%) | 3390.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 4.44 V (1.07%) | 410.6 V | 7.32 V (1.76%) | 2498.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 3.51 V (0.85%) | 411.5 V | 5.8 V (1.4%) | 1977.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.81 V (0.68%) | 412.2 V | 4.64 V (1.12%) | 1582.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.28 V (0.55%) | 412.7 V | 3.76 V (0.91%) | 1282.9 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.76 V (0.42%) | 413.2 V | 2.9 V (0.7%) | 988.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.41 V (0.34%) | 413.6 V | 2.32 V (0.56%) | 791.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.05 V (0.25%) | 413.9 V | 1.74 V (0.42%) | 593.3 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 35 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 325A at 35 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 35m at 415V (voltage drop: 2.28V or 0.55%).
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 · 40m (415V)325A · 45m (415V)325A · 50m (415V)325A · 60m (415V)325A · 70m (415V)10A · 35m (415V)16A · 35m (415V)20A · 35m (415V)25A · 35m (415V)32A · 35m (415V)40A · 35m (415V)50A · 35m (415V)63A · 35m (415V)80A · 35m (415V)100A · 35m (415V)125A · 35m (415V)160A · 35m (415V)200A · 35m (415V)