This is a paid asset, but now you can download it totally free. However, please keep in mind that this package is only provided for studying or testing the product prior to purchasing it, not for business functions.
Overview :
This tool helps you create power lines. Now you don’t need to use 3ds Max or Blender to create wire. Wires will be generated easily in the Unity editor. Also, it uses the LOD technique to have a faster rendering process and is effective in huge scenes. This asset contains some examples that you can use in your project. You can use your own models too.