550 Amp Cable Size at 40 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 40 m (131.2 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 2.04V (0.49%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.36V (0.81%)
Voltage at Load413.0 VLine Loss: 1942.0 W
Max Power & Breaker395.34 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 (131.0%) | 0.0 V | 896.74 V (216.08%) | 517880.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 326.18 V (78.6%) | 88.8 V | 538.04 V (129.65%) | 310728.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 203.86 V (49.12%) | 211.1 V | 336.28 V (81.03%) | 194205.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 135.91 V (32.75%) | 279.1 V | 224.19 V (54.02%) | 129470.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 81.54 V (19.65%) | 333.5 V | 134.51 V (32.41%) | 77682.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 50.97 V (12.28%) | 364.0 V | 84.07 V (20.26%) | 48551.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 32.62 V (7.86%) | 382.4 V | 53.8 V (12.96%) | 31072.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 23.3 V (5.61%) | 391.7 V | 38.43 V (9.26%) | 22194.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 16.31 V (3.93%) | 398.7 V | 26.9 V (6.48%) | 15536.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 11.65 V (2.81%) | 403.4 V | 19.22 V (4.63%) | 11097.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 8.58 V (2.07%) | 406.4 V | 14.16 V (3.41%) | 8177.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 6.8 V (1.64%) | 408.2 V | 11.21 V (2.7%) | 6473.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.44 V (1.31%) | 409.6 V | 8.97 V (2.16%) | 5178.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.41 V (1.06%) | 410.6 V | 7.27 V (1.75%) | 4199.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.4 V (0.82%) | 411.6 V | 5.6 V (1.35%) | 3236.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.72 V (0.65%) | 412.3 V | 4.48 V (1.08%) | 2589.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.04 V (0.49%) | 413.0 V | 3.36 V (0.81%) | 1942.0 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 40 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 550A at 40 meters (415V)?
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 415V (voltage drop: 2.04V or 0.49%).
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 · 45m (415V)550A · 50m (415V)550A · 60m (415V)550A · 70m (415V)10A · 40m (415V)16A · 40m (415V)20A · 40m (415V)25A · 40m (415V)32A · 40m (415V)40A · 40m (415V)50A · 40m (415V)63A · 40m (415V)80A · 40m (415V)100A · 40m (415V)125A · 40m (415V)160A · 40m (415V)200A · 40m (415V)