What does an electric cable contain and why aren't electric cables all the same colors? If you are in the trade, the question may seem trivial, but those who are not used to handling cables may find in their hands objects that they do not know everything they should know. Added to this is the fact that knowing the colors of the cables is also essential for safety reasons, since we are dealing with electrical systems.

Electric cables are conductors that carry electrical energy , for this reason they can have an insulated conductor or more conductors that are held together by a protective coating, which gives the cable its cylindrical shape and gives it its typical flexibility. The internal conductor is generally copper, it is in fact the most common material found inside the cables.

Other fundamental elements of the cable are the sheath , which directly wraps the conductor and insulation. The insulation itself is of fundamental importance because it protects us when we touch the cable for any reason.

Coming to the colors . If you are dealing with a blue wire it is a neutral wire, which manages the rest of the current. A brown, gray or black cable is a phase cable and is the one that carries the current inside a system. A yellow or green cable is the earth cable that allows the system to discharge any energy losses.