plz answer correctly as soon as possible......why we use stranded 500kV wire?
After AWG 12 or 14, all cable is stranded. The only purpose of stranded wire is to give it flexibility, regardless of voltage or current. .
There are many uses for stranded wire, from 5V to 500kV, and the reasons are very different. I am assuming since you say 500kV you mean high voltage transmission conductors? If that is the case the reason mainly is because of the physical strength of the conductor and manufacturing processes. For example a solid aluminum conductor with such large diameter is not realistic. When conductor spans large distances the weight of aluminum itself would tear it apart. Therefore a normal conductor would be something like 336 ACSR. ACSR meaning aluminum conductor steel reinforced. Steel is the inner wire for strength, and the outer wire is many aluminum wires wrapped together for carrying the electricity... Hopefully this was of some help.
