325 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 12.05V (2.9%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 14.9V (3.59%)
Voltage at Load403.0 VLine Loss: 6781.1 W
Max Power & Breaker233.61 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 300m
| 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 | 2409.28 V (580.55%) | 0.0 V | 3974.19 V (957.64%) | 1356225.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1445.57 V (348.33%) | 0.0 V | 2384.51 V (574.58%) | 813735.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 903.48 V (217.71%) | 0.0 V | 1490.32 V (359.11%) | 508584.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 602.32 V (145.14%) | 0.0 V | 993.55 V (239.41%) | 339056.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 361.39 V (87.08%) | 53.6 V | 596.13 V (143.65%) | 203433.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 225.87 V (54.43%) | 189.1 V | 372.58 V (89.78%) | 127146.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 144.56 V (34.83%) | 270.4 V | 238.45 V (57.46%) | 81373.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 103.25 V (24.88%) | 311.7 V | 170.32 V (41.04%) | 58123.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 72.28 V (17.42%) | 342.7 V | 119.23 V (28.73%) | 40686.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 51.63 V (12.44%) | 363.4 V | 85.16 V (20.52%) | 29062.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 38.04 V (9.17%) | 377.0 V | 62.75 V (15.12%) | 21414.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 30.12 V (7.26%) | 384.9 V | 49.68 V (11.97%) | 16952.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 24.09 V (5.81%) | 390.9 V | 39.74 V (9.58%) | 13562.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 19.53 V (4.71%) | 395.5 V | 32.22 V (7.76%) | 10996.4 W | ~ ≤5% |
| 240 mm² | 415 A | 324 A | 15.06 V (3.63%) | 399.9 V | 24.84 V (5.99%) | 8476.4 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 12.05 V (2.9%) | 403.0 V | 19.87 V (4.79%) | 6781.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 9.03 V (2.18%) | 406.0 V | 14.9 V (3.59%) | 5085.8 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 300 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 325A at 300 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 325A over 300m at 415V (voltage drop: 12.05V or 2.9%).
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 · 50m (415V)325A · 60m (415V)325A · 70m (415V)10A · 300m (415V)16A · 300m (415V)20A · 300m (415V)25A · 300m (415V)32A · 300m (415V)40A · 300m (415V)50A · 300m (415V)63A · 300m (415V)80A · 300m (415V)100A · 300m (415V)125A · 300m (415V)160A · 300m (415V)200A · 300m (415V)