450 Amp Cable Size at 15 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 15 m (49.2 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 0.83V (0.2%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.03V (0.25%)
Voltage at Load414.2 VLine Loss: 650.0 W
Max Power & Breaker323.46 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A at 15m
| 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 | 166.8 V (40.19%) | 248.2 V | 275.14 V (66.3%) | 130005.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 100.08 V (24.12%) | 314.9 V | 165.08 V (39.78%) | 78003.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 62.55 V (15.07%) | 352.5 V | 103.18 V (24.86%) | 48751.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 41.7 V (10.05%) | 373.3 V | 68.78 V (16.57%) | 32501.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 25.02 V (6.03%) | 390.0 V | 41.27 V (9.94%) | 19500.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 15.64 V (3.77%) | 399.4 V | 25.79 V (6.22%) | 12188.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.01 V (2.41%) | 405.0 V | 16.51 V (3.98%) | 7800.3 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.15 V (1.72%) | 407.9 V | 11.79 V (2.84%) | 5571.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.0 V (1.21%) | 410.0 V | 8.25 V (1.99%) | 3900.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.57 V (0.86%) | 411.4 V | 5.9 V (1.42%) | 2785.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.63 V (0.63%) | 412.4 V | 4.34 V (1.05%) | 2052.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.08 V (0.5%) | 412.9 V | 3.44 V (0.83%) | 1625.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.67 V (0.4%) | 413.3 V | 2.75 V (0.66%) | 1300.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.35 V (0.33%) | 413.6 V | 2.23 V (0.54%) | 1054.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.04 V (0.25%) | 414.0 V | 1.72 V (0.41%) | 812.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.83 V (0.2%) | 414.2 V | 1.38 V (0.33%) | 650.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.63 V (0.15%) | 414.4 V | 1.03 V (0.25%) | 487.5 W | ✓ OK (≤3%) |
FAQ — 450 Amp Cable Size at 15 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 450A at 15 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 15m at 415V (voltage drop: 0.83V or 0.2%).
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 · 20m (415V)450A · 25m (415V)450A · 30m (415V)450A · 35m (415V)450A · 40m (415V)450A · 45m (415V)450A · 50m (415V)450A · 60m (415V)450A · 70m (415V)10A · 15m (415V)16A · 15m (415V)20A · 15m (415V)25A · 15m (415V)32A · 15m (415V)40A · 15m (415V)50A · 15m (415V)63A · 15m (415V)80A · 15m (415V)100A · 15m (415V)125A · 15m (415V)160A · 15m (415V)200A · 15m (415V)