550 Amp Cable Size at 40 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 40 m (131.2 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 2.04V (0.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.36V (0.84%)
Voltage at Load398.0 VLine Loss: 1942.0 W
Max Power & Breaker381.05 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 40m
| 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 | 543.63 V (135.91%) | 0.0 V | 896.74 V (224.19%) | 517880.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 326.18 V (81.54%) | 73.8 V | 538.04 V (134.51%) | 310728.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 203.86 V (50.97%) | 196.1 V | 336.28 V (84.07%) | 194205.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 135.91 V (33.98%) | 264.1 V | 224.19 V (56.05%) | 129470.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 81.54 V (20.39%) | 318.5 V | 134.51 V (33.63%) | 77682.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 50.97 V (12.74%) | 349.0 V | 84.07 V (21.02%) | 48551.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 32.62 V (8.15%) | 367.4 V | 53.8 V (13.45%) | 31072.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 23.3 V (5.82%) | 376.7 V | 38.43 V (9.61%) | 22194.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 16.31 V (4.08%) | 383.7 V | 26.9 V (6.73%) | 15536.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 11.65 V (2.91%) | 388.4 V | 19.22 V (4.8%) | 11097.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 8.58 V (2.15%) | 391.4 V | 14.16 V (3.54%) | 8177.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 6.8 V (1.7%) | 393.2 V | 11.21 V (2.8%) | 6473.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.44 V (1.36%) | 394.6 V | 8.97 V (2.24%) | 5178.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.41 V (1.1%) | 395.6 V | 7.27 V (1.82%) | 4199.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.4 V (0.85%) | 396.6 V | 5.6 V (1.4%) | 3236.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.72 V (0.68%) | 397.3 V | 4.48 V (1.12%) | 2589.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.04 V (0.51%) | 398.0 V | 3.36 V (0.84%) | 1942.0 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 40 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 550A at 40 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 550A over 40m at 400V (voltage drop: 2.04V or 0.51%).
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 · 45m (400V)550A · 50m (400V)550A · 60m (400V)550A · 70m (400V)10A · 40m (400V)16A · 40m (400V)20A · 40m (400V)25A · 40m (400V)32A · 40m (400V)40A · 40m (400V)50A · 40m (400V)63A · 40m (400V)80A · 40m (400V)100A · 40m (400V)125A · 40m (400V)160A · 40m (400V)200A · 40m (400V)