What does Section 300.11 require for boxes and fittings?

Section 300.11 of the National Electrical Code (NEC) addresses the proper installation of boxes and fittings. The requirement for these components to be securely fastened in place is crucial for several reasons. First, securely fastening boxes and fittings helps ensure the integrity of electrical installations, preventing movement that could lead to wear on wiring or connections. This durability is essential for safety, as loose fittings could expose live wires, increase the risk of short circuits, and create fire hazards.

Additionally, secure fastening contributes to the overall stability of the electrical system. Well-fastened boxes and fittings are less susceptible to damage from physical impacts or environmental factors, such as vibrations. This aspect is particularly important in locations where boxes and fittings may be subjected to movement, such as in wall studs or ceiling joists.

While the other options may appear relevant in different contexts—such as labeling for identification or painting for aesthetics—these do not pertain to the fundamental requirements for safety and structural integrity outlined in Section 300.11. Therefore, the requirement for boxes and fittings to be securely fastened effectively supports compliance with safety practices outlined in electrical codes.