550 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 550 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 8.92V (2.15%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 29.42V (7.09%)
Voltage at Load406.1 VLine Loss: 8496.5 W
Max Power & Breaker395.34 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A 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 | 4756.79 V (1146.21%) | 0.0 V | 7846.48 V (1890.72%) | 4531450.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2854.07 V (687.73%) | 0.0 V | 4707.89 V (1134.43%) | 2718870.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1783.8 V (429.83%) | 0.0 V | 2942.43 V (709.02%) | 1699293.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 1189.2 V (286.55%) | 0.0 V | 1961.62 V (472.68%) | 1132862.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 713.52 V (171.93%) | 0.0 V | 1176.97 V (283.61%) | 679717.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 445.95 V (107.46%) | 0.0 V | 735.61 V (177.25%) | 424823.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 285.41 V (68.77%) | 129.6 V | 470.79 V (113.44%) | 271887.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 203.86 V (49.12%) | 211.1 V | 336.28 V (81.03%) | 194205.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 142.7 V (34.39%) | 272.3 V | 235.39 V (56.72%) | 135943.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 101.93 V (24.56%) | 313.1 V | 168.14 V (40.52%) | 97102.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 75.11 V (18.1%) | 339.9 V | 123.89 V (29.85%) | 71549.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 59.46 V (14.33%) | 355.5 V | 98.08 V (23.63%) | 56643.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 47.57 V (11.46%) | 367.4 V | 78.46 V (18.91%) | 45314.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 38.57 V (9.29%) | 376.4 V | 63.62 V (15.33%) | 36741.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 29.73 V (7.16%) | 385.3 V | 49.04 V (11.82%) | 28321.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 23.78 V (5.73%) | 391.2 V | 39.23 V (9.45%) | 22657.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 17.84 V (4.3%) | 397.2 V | 29.42 V (7.09%) | 16992.9 W | ~ ≤5% |
FAQ — 550 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 550A at 350 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 550A over 350m at 415V (voltage drop: 8.92V or 2.15%).
What is the power capacity of 550A at 415V?
At unity power factor, 550A at 415V supports 395.34 kW with a standard 600A circuit breaker.
Related Lengths & Currents (415V)
550A · 5m (415V)550A · 10m (415V)550A · 15m (415V)550A · 20m (415V)550A · 25m (415V)550A · 30m (415V)550A · 35m (415V)550A · 40m (415V)550A · 45m (415V)550A · 50m (415V)550A · 60m (415V)550A · 70m (415V)10A · 350m (415V)16A · 350m (415V)20A · 350m (415V)25A · 350m (415V)32A · 350m (415V)40A · 350m (415V)50A · 350m (415V)63A · 350m (415V)80A · 350m (415V)100A · 350m (415V)125A · 350m (415V)160A · 350m (415V)200A · 350m (415V)