What does the term 'concealed' mean in electrical installations?

In electrical installations, the term 'concealed' refers specifically to wiring or components that are hidden from view, generally due to being embedded within walls, roofs, or floors. This method is often employed to protect the wiring and maintain a clean and uncluttered appearance in living or working spaces. When electrical work is considered concealed, it typically implies that the wiring is rendered inaccessible by the building structure or finish, which helps in both safety and aesthetic considerations.

In contrast, visible installations are often done for maintenance ease or decorative purposes, which means they are intentionally left exposed. Understanding this terminology is crucial for apprentices to ensure compliance with safety codes and building regulations while also considering aesthetic implications during installations.