450 Amp Cable Size at 350 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 350 m (1148.3 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 19.46V (2.82%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 24.07V (3.49%)
Voltage at Load670.5 VLine Loss: 15167.2 W
Max Power & Breaker537.8 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A at 350m
| 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 | 3891.92 V (564.05%) | 0.0 V | 6419.85 V (930.41%) | 3033450.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2335.15 V (338.43%) | 0.0 V | 3851.91 V (558.25%) | 1820070.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1459.47 V (211.52%) | 0.0 V | 2407.44 V (348.9%) | 1137543.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 972.98 V (141.01%) | 0.0 V | 1604.96 V (232.6%) | 758362.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 583.79 V (84.61%) | 106.2 V | 962.98 V (139.56%) | 455017.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 364.87 V (52.88%) | 325.1 V | 601.86 V (87.23%) | 284385.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 233.52 V (33.84%) | 456.5 V | 385.19 V (55.82%) | 182007.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 166.8 V (24.17%) | 523.2 V | 275.14 V (39.87%) | 130005.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 116.76 V (16.92%) | 573.2 V | 192.6 V (27.91%) | 91003.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 83.4 V (12.09%) | 606.6 V | 137.57 V (19.94%) | 65002.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 61.45 V (8.91%) | 628.5 V | 101.37 V (14.69%) | 47896.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 48.65 V (7.05%) | 641.4 V | 80.25 V (11.63%) | 37918.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 38.92 V (5.64%) | 651.1 V | 64.2 V (9.3%) | 30334.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 31.56 V (4.57%) | 658.4 V | 52.05 V (7.54%) | 24595.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 24.32 V (3.53%) | 665.7 V | 40.12 V (5.82%) | 18959.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 19.46 V (2.82%) | 670.5 V | 32.1 V (4.65%) | 15167.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 14.59 V (2.12%) | 675.4 V | 24.07 V (3.49%) | 11375.4 W | ✓ OK (≤3%) |
FAQ — 450 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 450A at 350 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 350m at 690V (voltage drop: 19.46V or 2.82%).
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 · 15m (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 · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)63A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)