550 Amp Cable Size at 45 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 45 m (147.6 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 2.29V (0.55%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.78V (0.91%)
Voltage at Load412.7 VLine Loss: 2184.8 W
Max Power & Breaker395.34 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 45m
| 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 | 611.59 V (147.37%) | 0.0 V | 1008.83 V (243.09%) | 582615.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 366.95 V (88.42%) | 48.0 V | 605.3 V (145.86%) | 349569.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 229.35 V (55.26%) | 185.7 V | 378.31 V (91.16%) | 218480.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 152.9 V (36.84%) | 262.1 V | 252.21 V (60.77%) | 145653.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 91.74 V (22.11%) | 323.3 V | 151.32 V (36.46%) | 87392.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 57.34 V (13.82%) | 357.7 V | 94.58 V (22.79%) | 54620.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 36.7 V (8.84%) | 378.3 V | 60.53 V (14.59%) | 34956.9 W | Drop High |
| 35 mm² | 125 A | 97 A | 26.21 V (6.32%) | 388.8 V | 43.24 V (10.42%) | 24969.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 18.35 V (4.42%) | 396.7 V | 30.26 V (7.29%) | 17478.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 13.11 V (3.16%) | 401.9 V | 21.62 V (5.21%) | 12484.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 9.66 V (2.33%) | 405.3 V | 15.93 V (3.84%) | 9199.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 7.64 V (1.84%) | 407.4 V | 12.61 V (3.04%) | 7282.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 6.12 V (1.47%) | 408.9 V | 10.09 V (2.43%) | 5826.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.96 V (1.19%) | 410.0 V | 8.18 V (1.97%) | 4723.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.82 V (0.92%) | 411.2 V | 6.31 V (1.52%) | 3641.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.06 V (0.74%) | 411.9 V | 5.04 V (1.22%) | 2913.1 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.29 V (0.55%) | 412.7 V | 3.78 V (0.91%) | 2184.8 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 45 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 550A at 45 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 45m at 415V (voltage drop: 2.29V or 0.55%).
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 · 50m (415V)550A · 60m (415V)550A · 70m (415V)10A · 45m (415V)16A · 45m (415V)20A · 45m (415V)25A · 45m (415V)32A · 45m (415V)40A · 45m (415V)50A · 45m (415V)63A · 45m (415V)80A · 45m (415V)100A · 45m (415V)125A · 45m (415V)160A · 45m (415V)200A · 45m (415V)