The wires inside a sheathed link will likewise have plastic protection that is shading coded for simple acknowledgment. All links will have a white protected wire and a dark protected wire; these distinguish the nonpartisan and the hot wires, individually. The uncovered copper wire in the link is the ground wire. (In uncommon cases, you may discover a link in which the ground wire is secured with green protection—green is the shading assigned for ground wires.) In a three-wire link, there will be a red wire notwithstanding the white and dark wires. Red is likewise assigned as a hot shading. External Jacket Labeling With all nonmetallic sheathed link, the external coat is named with letters that indicate what number of protected wires are disguised inside the sheathing. This wire tally does not, nonetheless, incorporate the uninsulated uncovered copper wire that is utilized as an establishing wire. For example, if the link records 12-2 WG, it implies there are two protected 12-measure wires (a dark and a white wire), in addition to a ground wire. On the off chance that the mark says 12-3, this is a three-conveyor (red, dark, and white), 12-check link with an exposed copper ground wire included.