Bare copper wire is complex shape wire and cable. Bare copper wire in use as overhead power source for subways, light and heavy transit systems, electrically powered mine trains, buses, and industrial cranes. The bare copper wire likely also touches conduit, and other similar things etc.
The nylon overcoated wires demonstrate the same properties as the above wires without polyamide coating. What's more, because of the nylon coating, these wires' mechanic properties are improved greatly. Used in such cases where fast winding is needed.
Cable Copper Wire