450 Amp Cable Size at 45 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 450 A over 45 m (147.6 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 2.5V (0.6%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.1V (0.75%)
Voltage at Load412.5 VLine Loss: 1950.1 W
Max Power & Breaker323.46 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A at 45m
| 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 | 500.39 V (120.58%) | 0.0 V | 825.41 V (198.89%) | 390015.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 300.23 V (72.35%) | 114.8 V | 495.25 V (119.34%) | 234009.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 187.65 V (45.22%) | 227.4 V | 309.53 V (74.59%) | 146255.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 125.1 V (30.14%) | 289.9 V | 206.35 V (49.72%) | 97503.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 75.06 V (18.09%) | 339.9 V | 123.81 V (29.83%) | 58502.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 46.91 V (11.3%) | 368.1 V | 77.38 V (18.65%) | 36563.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 30.02 V (7.23%) | 385.0 V | 49.52 V (11.93%) | 23400.9 W | Drop High |
| 35 mm² | 125 A | 97 A | 21.45 V (5.17%) | 393.6 V | 35.37 V (8.52%) | 16714.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 15.01 V (3.62%) | 400.0 V | 24.76 V (5.97%) | 11700.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 10.72 V (2.58%) | 404.3 V | 17.69 V (4.26%) | 8357.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 7.9 V (1.9%) | 407.1 V | 13.03 V (3.14%) | 6158.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 6.25 V (1.51%) | 408.7 V | 10.32 V (2.49%) | 4875.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.0 V (1.21%) | 410.0 V | 8.25 V (1.99%) | 3900.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.06 V (0.98%) | 410.9 V | 6.69 V (1.61%) | 3162.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.13 V (0.75%) | 411.9 V | 5.16 V (1.24%) | 2437.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.5 V (0.6%) | 412.5 V | 4.13 V (0.99%) | 1950.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.88 V (0.45%) | 413.1 V | 3.1 V (0.75%) | 1462.6 W | ✓ OK (≤3%) |
FAQ — 450 Amp Cable Size at 45 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 450A at 45 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 450A over 45m at 415V (voltage drop: 2.5V or 0.6%).
What is the power capacity of 450A at 415V?
At unity power factor, 450A at 415V supports 323.46 kW with a standard 450A circuit breaker.
Related Lengths & Currents (415V)
450A · 5m (415V)450A · 10m (415V)450A · 15m (415V)450A · 20m (415V)450A · 25m (415V)450A · 30m (415V)450A · 35m (415V)450A · 40m (415V)450A · 50m (415V)450A · 60m (415V)450A · 70m (415V)10A · 45m (415V)16A · 45m (415V)20A · 45m (415V)25A · 45m (415V)32A · 45m (415V)40A · 45m (415V)50A · 45m (415V)63A · 45m (415V)80A · 45m (415V)100A · 45m (415V)125A · 45m (415V)160A · 45m (415V)200A · 45m (415V)