450 Amp Cable Size at 15 Meters (690V Three-Phase (Wind / Heavy 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 (0.12%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.03V (0.15%)
Voltage at Load689.2 VLine Loss: 650.0 W
Max Power & Breaker537.8 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 (24.17%) | 523.2 V | 275.14 V (39.87%) | 130005.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 100.08 V (14.5%) | 589.9 V | 165.08 V (23.92%) | 78003.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 62.55 V (9.07%) | 627.5 V | 103.18 V (14.95%) | 48751.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 41.7 V (6.04%) | 648.3 V | 68.78 V (9.97%) | 32501.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 25.02 V (3.63%) | 665.0 V | 41.27 V (5.98%) | 19500.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 15.64 V (2.27%) | 674.4 V | 25.79 V (3.74%) | 12188.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.01 V (1.45%) | 680.0 V | 16.51 V (2.39%) | 7800.3 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.15 V (1.04%) | 682.9 V | 11.79 V (1.71%) | 5571.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.0 V (0.73%) | 685.0 V | 8.25 V (1.2%) | 3900.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.57 V (0.52%) | 686.4 V | 5.9 V (0.85%) | 2785.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.63 V (0.38%) | 687.4 V | 4.34 V (0.63%) | 2052.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.08 V (0.3%) | 687.9 V | 3.44 V (0.5%) | 1625.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.67 V (0.24%) | 688.3 V | 2.75 V (0.4%) | 1300.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.35 V (0.2%) | 688.6 V | 2.23 V (0.32%) | 1054.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.04 V (0.15%) | 689.0 V | 1.72 V (0.25%) | 812.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.83 V (0.12%) | 689.2 V | 1.38 V (0.2%) | 650.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.63 V (0.09%) | 689.4 V | 1.03 V (0.15%) | 487.5 W | ✓ OK (≤3%) |
FAQ — 450 Amp Cable Size at 15 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 450A at 15 meters (690V)?
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 690V (voltage drop: 0.83V or 0.12%).
What is the power capacity of 450A at 690V?
At unity power factor, 450A at 690V supports 537.8 kW with a standard 450A circuit breaker.
Related Lengths & Currents (690V)
450A · 5m (690V)450A · 10m (690V)450A · 20m (690V)450A · 25m (690V)450A · 30m (690V)450A · 35m (690V)450A · 40m (690V)450A · 45m (690V)450A · 50m (690V)450A · 60m (690V)450A · 70m (690V)10A · 15m (690V)16A · 15m (690V)20A · 15m (690V)25A · 15m (690V)32A · 15m (690V)40A · 15m (690V)50A · 15m (690V)63A · 15m (690V)80A · 15m (690V)100A · 15m (690V)125A · 15m (690V)160A · 15m (690V)200A · 15m (690V)