Good panel layout, wire ID, and cable ID usually allow to put minimal information on individual wires. Take some abbreviations and numbers, such as “C” for “Cable”. From telecommunications, construction, and manufacturing to data centers, the proper labeling process saves time, eradicates errors, and ensures. How to correctly mark the lines and cables in the distribution box? Imagine opening your distribution box to troubleshoot an electrical issue only to find a tangled mess of unlabeled wires. They carry a variety of important details, including conductor colour value, date installed, type of cable, voltage rating, and parent/child device combination. Proper cable Labelling Guidelines.