325 Amp Cable Size at 5 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 5 m (16.4 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 0.33V (0.08%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.33V (0.08%)
Voltage at Load414.7 VLine Loss: 183.3 W
Max Power & Breaker233.61 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 5m
| 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 | 40.15 V (9.68%) | 374.8 V | 66.24 V (15.96%) | 22603.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 24.09 V (5.81%) | 390.9 V | 39.74 V (9.58%) | 13562.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 15.06 V (3.63%) | 399.9 V | 24.84 V (5.99%) | 8476.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 10.04 V (2.42%) | 405.0 V | 16.56 V (3.99%) | 5650.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 6.02 V (1.45%) | 409.0 V | 9.94 V (2.39%) | 3390.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 3.76 V (0.91%) | 411.2 V | 6.21 V (1.5%) | 2119.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 2.41 V (0.58%) | 412.6 V | 3.97 V (0.96%) | 1356.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 1.72 V (0.41%) | 413.3 V | 2.84 V (0.68%) | 968.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 1.2 V (0.29%) | 413.8 V | 1.99 V (0.48%) | 678.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 0.86 V (0.21%) | 414.1 V | 1.42 V (0.34%) | 484.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 0.63 V (0.15%) | 414.4 V | 1.05 V (0.25%) | 356.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 0.5 V (0.12%) | 414.5 V | 0.83 V (0.2%) | 282.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.4 V (0.1%) | 414.6 V | 0.66 V (0.16%) | 226.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.33 V (0.08%) | 414.7 V | 0.54 V (0.13%) | 183.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.25 V (0.06%) | 414.7 V | 0.41 V (0.1%) | 141.3 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.2 V (0.05%) | 414.8 V | 0.33 V (0.08%) | 113.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.15 V (0.04%) | 414.8 V | 0.25 V (0.06%) | 84.8 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 5 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 325A at 5 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 5m at 415V (voltage drop: 0.33V or 0.08%).
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 · 10m (415V)325A · 15m (415V)325A · 20m (415V)325A · 25m (415V)325A · 30m (415V)325A · 35m (415V)325A · 40m (415V)325A · 45m (415V)325A · 50m (415V)325A · 60m (415V)325A · 70m (415V)10A · 5m (415V)16A · 5m (415V)20A · 5m (415V)25A · 5m (415V)32A · 5m (415V)40A · 5m (415V)50A · 5m (415V)63A · 5m (415V)80A · 5m (415V)100A · 5m (415V)125A · 5m (415V)160A · 5m (415V)200A · 5m (415V)