550 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 550 A over 300 m (984.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 7.64V (1.91%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 25.22V (6.31%)
Voltage at Load392.4 VLine Loss: 7282.7 W
Max Power & Breaker381.05 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A 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 | 4077.25 V (1019.31%) | 0.0 V | 6725.55 V (1681.39%) | 3884100.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2446.35 V (611.59%) | 0.0 V | 4035.33 V (1008.83%) | 2330460.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1528.97 V (382.24%) | 0.0 V | 2522.08 V (630.52%) | 1456537.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 1019.31 V (254.83%) | 0.0 V | 1681.39 V (420.35%) | 971025.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 611.59 V (152.9%) | 0.0 V | 1008.83 V (252.21%) | 582615.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 382.24 V (95.56%) | 17.8 V | 630.52 V (157.63%) | 364134.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 244.63 V (61.16%) | 155.4 V | 403.53 V (100.88%) | 233046.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 174.74 V (43.68%) | 225.3 V | 288.24 V (72.06%) | 166461.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 122.32 V (30.58%) | 277.7 V | 201.77 V (50.44%) | 116523.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 87.37 V (21.84%) | 312.6 V | 144.12 V (36.03%) | 83230.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 64.38 V (16.09%) | 335.6 V | 106.19 V (26.55%) | 61327.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 50.97 V (12.74%) | 349.0 V | 84.07 V (21.02%) | 48551.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 40.77 V (10.19%) | 359.2 V | 67.26 V (16.81%) | 38841.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 33.06 V (8.26%) | 366.9 V | 54.53 V (13.63%) | 31492.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 25.48 V (6.37%) | 374.5 V | 42.03 V (10.51%) | 24275.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 20.39 V (5.1%) | 379.6 V | 33.63 V (8.41%) | 19420.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 15.29 V (3.82%) | 384.7 V | 25.22 V (6.31%) | 14565.4 W | ~ ≤5% |
FAQ — 550 Amp Cable Size at 300 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 550A 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 550A over 300m at 400V (voltage drop: 7.64V or 1.91%).
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 · 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)