550 Amp Cable Size at 350 Meters (400V Three-Phase (IEC European Grid))
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 (2.23%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 29.42V (7.36%)
Voltage at Load391.1 VLine Loss: 8496.5 W
Max Power & Breaker381.05 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 (1189.2%) | 0.0 V | 7846.48 V (1961.62%) | 4531450.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2854.07 V (713.52%) | 0.0 V | 4707.89 V (1176.97%) | 2718870.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1783.8 V (445.95%) | 0.0 V | 2942.43 V (735.61%) | 1699293.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 1189.2 V (297.3%) | 0.0 V | 1961.62 V (490.4%) | 1132862.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 713.52 V (178.38%) | 0.0 V | 1176.97 V (294.24%) | 679717.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 445.95 V (111.49%) | 0.0 V | 735.61 V (183.9%) | 424823.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 285.41 V (71.35%) | 114.6 V | 470.79 V (117.7%) | 271887.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 203.86 V (50.97%) | 196.1 V | 336.28 V (84.07%) | 194205.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 142.7 V (35.68%) | 257.3 V | 235.39 V (58.85%) | 135943.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 101.93 V (25.48%) | 298.1 V | 168.14 V (42.03%) | 97102.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 75.11 V (18.78%) | 324.9 V | 123.89 V (30.97%) | 71549.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 59.46 V (14.86%) | 340.5 V | 98.08 V (24.52%) | 56643.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 47.57 V (11.89%) | 352.4 V | 78.46 V (19.62%) | 45314.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 38.57 V (9.64%) | 361.4 V | 63.62 V (15.91%) | 36741.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 29.73 V (7.43%) | 370.3 V | 49.04 V (12.26%) | 28321.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 23.78 V (5.95%) | 376.2 V | 39.23 V (9.81%) | 22657.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 17.84 V (4.46%) | 382.2 V | 29.42 V (7.36%) | 16992.9 W | ~ ≤5% |
FAQ — 550 Amp Cable Size at 350 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 550A at 350 meters (400V)?
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 400V (voltage drop: 8.92V or 2.23%).
What is the power capacity of 550A at 400V?
At unity power factor, 550A at 400V supports 381.05 kW with a standard 600A circuit breaker.
Related Lengths & Currents (400V)
550A · 5m (400V)550A · 10m (400V)550A · 15m (400V)550A · 20m (400V)550A · 25m (400V)550A · 30m (400V)550A · 35m (400V)550A · 40m (400V)550A · 45m (400V)550A · 50m (400V)550A · 60m (400V)550A · 70m (400V)10A · 350m (400V)16A · 350m (400V)20A · 350m (400V)25A · 350m (400V)32A · 350m (400V)40A · 350m (400V)50A · 350m (400V)63A · 350m (400V)80A · 350m (400V)100A · 350m (400V)125A · 350m (400V)160A · 350m (400V)200A · 350m (400V)