Knowing what the markings mean on registered wire gives you an advantage when dealing with any electrical system. The characteristic information printed on the wire provides a ton of detail about the circuit it is connected to, as well as providing traceability through the supply chain for where the wire came from. These markings define what the wire can be used for, its physical limitations like fire ratings, pliability, compositions, registered file numbers for wire use, wire gauge and more! A telltale sign that you are purchasing registered, high quality wire is that is will always come with printed markings. …
