325 Amp Cable Size at 30 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 30 m (98.4 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 1.95V (0.47%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 1.99V (0.48%)
Voltage at Load413.0 VLine Loss: 1099.6 W
Max Power & Breaker233.61 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 30m
| 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 | 240.93 V (58.06%) | 174.1 V | 397.42 V (95.76%) | 135622.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 144.56 V (34.83%) | 270.4 V | 238.45 V (57.46%) | 81373.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 90.35 V (21.77%) | 324.7 V | 149.03 V (35.91%) | 50858.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 60.23 V (14.51%) | 354.8 V | 99.35 V (23.94%) | 33905.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 36.14 V (8.71%) | 378.9 V | 59.61 V (14.36%) | 20343.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 22.59 V (5.44%) | 392.4 V | 37.26 V (8.98%) | 12714.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 14.46 V (3.48%) | 400.5 V | 23.85 V (5.75%) | 8137.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 10.33 V (2.49%) | 404.7 V | 17.03 V (4.1%) | 5812.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 7.23 V (1.74%) | 407.8 V | 11.92 V (2.87%) | 4068.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 5.16 V (1.24%) | 409.8 V | 8.52 V (2.05%) | 2906.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.8 V (0.92%) | 411.2 V | 6.28 V (1.51%) | 2141.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 3.01 V (0.73%) | 412.0 V | 4.97 V (1.2%) | 1695.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.41 V (0.58%) | 412.6 V | 3.97 V (0.96%) | 1356.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.95 V (0.47%) | 413.0 V | 3.22 V (0.78%) | 1099.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.51 V (0.36%) | 413.5 V | 2.48 V (0.6%) | 847.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.2 V (0.29%) | 413.8 V | 1.99 V (0.48%) | 678.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.9 V (0.22%) | 414.1 V | 1.49 V (0.36%) | 508.6 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 30 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 325A at 30 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 30m at 415V (voltage drop: 1.95V or 0.47%).
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 · 35m (415V)325A · 40m (415V)325A · 45m (415V)325A · 50m (415V)325A · 60m (415V)325A · 70m (415V)10A · 30m (415V)16A · 30m (415V)20A · 30m (415V)25A · 30m (415V)32A · 30m (415V)40A · 30m (415V)50A · 30m (415V)63A · 30m (415V)80A · 30m (415V)100A · 30m (415V)125A · 30m (415V)160A · 30m (415V)200A · 30m (415V)