The cables are a set of metallic threads, usually made of copper (due to its level of conductivity) or aluminum (due to its low cost), which allow for electricity to flow from one point to another. Usually, they have a protective insulating wrap or hose so that the current doesn’t flow outside of them, a layer of filler to keep the circular shape of the cable, and the outermost covered layer made with materials that are resistant to heat, rain, etc.