What type of fastening is required for an outlet box?

The requirement for outlet boxes according to the National Electrical Code (NEC) is that they must be fastened rigidly and securely. This is crucial for ensuring the safety and stability of electrical installations. A properly secured outlet box can withstand the stresses of repeated plugging and unplugging of devices, along with any mechanical forces applied during maintenance or use.

Using rigid and secure fastening helps prevent movement that could damage wires or connections within the box and avoid potential electrical hazards. This type of fastening includes methods such as screws or brackets that keep the box firmly in place as part of the building structure. Reliable fastening is essential not only for the structural integrity of the electrical system but also for compliance with NEC standards, which aim to minimize risks associated with electrical installations.

Other fastening methods, such as temporary fasteners, loose connections, or adhesive fastening, would not provide the necessary stability and security required for outlet boxes. These alternatives could lead to unsafe conditions, making it imperative to follow NEC guidelines and utilize rigid and secure fasteners for outlet boxes in electrical installations.