550 Amp Cable Size at 50 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 550 A over 50 m (164.0 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 2.55V (0.37%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.2V (0.61%)
Voltage at Load687.5 VLine Loss: 2427.6 W
Max Power & Breaker657.31 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 50m
| 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 | 679.54 V (98.48%) | 10.5 V | 1120.93 V (162.45%) | 647350.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 407.72 V (59.09%) | 282.3 V | 672.56 V (97.47%) | 388410.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 254.83 V (36.93%) | 435.2 V | 420.35 V (60.92%) | 242756.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 169.89 V (24.62%) | 520.1 V | 280.23 V (40.61%) | 161837.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 101.93 V (14.77%) | 588.1 V | 168.14 V (24.37%) | 97102.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 63.71 V (9.23%) | 626.3 V | 105.09 V (15.23%) | 60689.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 40.77 V (5.91%) | 649.2 V | 67.26 V (9.75%) | 38841.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 29.12 V (4.22%) | 660.9 V | 48.04 V (6.96%) | 27743.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 20.39 V (2.95%) | 669.6 V | 33.63 V (4.87%) | 19420.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 14.56 V (2.11%) | 675.4 V | 24.02 V (3.48%) | 13871.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 10.73 V (1.56%) | 679.3 V | 17.7 V (2.57%) | 10221.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 8.49 V (1.23%) | 681.5 V | 14.01 V (2.03%) | 8091.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 6.8 V (0.98%) | 683.2 V | 11.21 V (1.62%) | 6473.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 5.51 V (0.8%) | 684.5 V | 9.09 V (1.32%) | 5248.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.25 V (0.62%) | 685.8 V | 7.01 V (1.02%) | 4045.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.4 V (0.49%) | 686.6 V | 5.6 V (0.81%) | 3236.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.55 V (0.37%) | 687.5 V | 4.2 V (0.61%) | 2427.6 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 50 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 550A at 50 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 550A over 50m at 690V (voltage drop: 2.55V or 0.37%).
What is the power capacity of 550A at 690V?
At unity power factor, 550A at 690V supports 657.31 kW with a standard 600A circuit breaker.
Related Lengths & Currents (690V)
550A · 5m (690V)550A · 10m (690V)550A · 15m (690V)550A · 20m (690V)550A · 25m (690V)550A · 30m (690V)550A · 35m (690V)550A · 40m (690V)550A · 45m (690V)550A · 60m (690V)550A · 70m (690V)10A · 50m (690V)16A · 50m (690V)20A · 50m (690V)25A · 50m (690V)32A · 50m (690V)40A · 50m (690V)50A · 50m (690V)63A · 50m (690V)80A · 50m (690V)100A · 50m (690V)125A · 50m (690V)160A · 50m (690V)200A · 50m (690V)