450 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.25V (1.56%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 20.64V (5.16%)
Voltage at Load393.8 VLine Loss: 4875.2 W
Max Power & Breaker311.77 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A 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 | 3335.93 V (833.98%) | 0.0 V | 5502.73 V (1375.68%) | 2600100.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2001.56 V (500.39%) | 0.0 V | 3301.64 V (825.41%) | 1560060.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1250.97 V (312.74%) | 0.0 V | 2063.52 V (515.88%) | 975037.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 833.98 V (208.5%) | 0.0 V | 1375.68 V (343.92%) | 650025.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 500.39 V (125.1%) | 0.0 V | 825.41 V (206.35%) | 390015.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 312.74 V (78.19%) | 87.3 V | 515.88 V (128.97%) | 243759.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 200.16 V (50.04%) | 199.8 V | 330.16 V (82.54%) | 156006.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 142.97 V (35.74%) | 257.0 V | 235.83 V (58.96%) | 111432.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 100.08 V (25.02%) | 299.9 V | 165.08 V (41.27%) | 78003.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 71.48 V (17.87%) | 328.5 V | 117.92 V (29.48%) | 55716.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 52.67 V (13.17%) | 347.3 V | 86.89 V (21.72%) | 41054.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 41.7 V (10.42%) | 358.3 V | 68.78 V (17.2%) | 32501.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 33.36 V (8.34%) | 366.6 V | 55.03 V (13.76%) | 26001.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 27.05 V (6.76%) | 373.0 V | 44.62 V (11.15%) | 21081.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 20.85 V (5.21%) | 379.2 V | 34.39 V (8.6%) | 16250.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 16.68 V (4.17%) | 383.3 V | 27.51 V (6.88%) | 13000.5 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 12.51 V (3.13%) | 387.5 V | 20.64 V (5.16%) | 9750.4 W | ~ ≤5% |
FAQ — 450 Amp Cable Size at 300 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 450A at 300 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 450A over 300m at 400V (voltage drop: 6.25V or 1.56%).
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)450A · 70m (400V)10A · 300m (400V)16A · 300m (400V)20A · 300m (400V)25A · 300m (400V)32A · 300m (400V)40A · 300m (400V)50A · 300m (400V)63A · 300m (400V)80A · 300m (400V)100A · 300m (400V)125A · 300m (400V)160A · 300m (400V)200A · 300m (400V)