What does it mean if a conductor is described as concealed?

A conductor described as concealed refers to a situation where it is hidden from view and not readily accessible because it is covered or obstructed by building materials. This term is often used in the context of wiring installations within walls, ceilings, or floors, where the conductor is placed in a manner that it cannot be seen without removing the enclosing materials.

This distinction is important in electrical work because the NEC has specific codes regarding the installation, access, and maintenance of concealed conductors to ensure safety and proper function. It ensures that conductors can be installed safely while adhering to regulations intended to prevent hazards, such as overheating or the risk of physical damage to the wires.

In contrast, if a conductor is covered in insulation, it is not synonymous with being concealed; insulation refers to the protective coating around a conductor that prevents electrical shock and provides other safety barriers. A visibly exposed conductor, on the other hand, is intended to be readily accessible for safety and maintenance, and a damaged conductor would require consideration for replacement due to potential risks.