450 Amp Cable Size at 70 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 450 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 3.89V (0.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.81V (1.2%)
Voltage at Load396.1 VLine Loss: 3033.4 W
Max Power & Breaker311.77 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A at 70m
| 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 | 778.38 V (194.6%) | 0.0 V | 1283.97 V (320.99%) | 606690.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 467.03 V (116.76%) | 0.0 V | 770.38 V (192.6%) | 364014.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 291.89 V (72.97%) | 108.1 V | 481.49 V (120.37%) | 227508.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 194.6 V (48.65%) | 205.4 V | 320.99 V (80.25%) | 151672.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 116.76 V (29.19%) | 283.2 V | 192.6 V (48.15%) | 91003.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 72.97 V (18.24%) | 327.0 V | 120.37 V (30.09%) | 56877.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 46.7 V (11.68%) | 353.3 V | 77.04 V (19.26%) | 36401.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 33.36 V (8.34%) | 366.6 V | 55.03 V (13.76%) | 26001.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 23.35 V (5.84%) | 376.6 V | 38.52 V (9.63%) | 18200.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 16.68 V (4.17%) | 383.3 V | 27.51 V (6.88%) | 13000.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 12.29 V (3.07%) | 387.7 V | 20.27 V (5.07%) | 9579.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 9.73 V (2.43%) | 390.3 V | 16.05 V (4.01%) | 7583.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 7.78 V (1.95%) | 392.2 V | 12.84 V (3.21%) | 6066.9 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.31 V (1.58%) | 393.7 V | 10.41 V (2.6%) | 4919.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.86 V (1.22%) | 395.1 V | 8.02 V (2.01%) | 3791.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.89 V (0.97%) | 396.1 V | 6.42 V (1.6%) | 3033.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.92 V (0.73%) | 397.1 V | 4.81 V (1.2%) | 2275.1 W | ✓ OK (≤3%) |
FAQ — 450 Amp Cable Size at 70 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 450A at 70 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 450A over 70m at 400V (voltage drop: 3.89V or 0.97%).
What is the power capacity of 450A at 400V?
At unity power factor, 450A at 400V supports 311.77 kW with a standard 450A circuit breaker.
Related Lengths & Currents (400V)
450A · 5m (400V)450A · 10m (400V)450A · 15m (400V)450A · 20m (400V)450A · 25m (400V)450A · 30m (400V)450A · 35m (400V)450A · 40m (400V)450A · 45m (400V)450A · 50m (400V)450A · 60m (400V)10A · 70m (400V)16A · 70m (400V)20A · 70m (400V)25A · 70m (400V)32A · 70m (400V)40A · 70m (400V)50A · 70m (400V)63A · 70m (400V)80A · 70m (400V)100A · 70m (400V)125A · 70m (400V)160A · 70m (400V)200A · 70m (400V)