For what purpose would you typically use an accessory box?

Accessory boxes are commonly used for mounting switches and outlets. They provide a secure and convenient enclosure that supports various devices, allowing them to be mounted safely and effectively in walls or ceilings. Accessory boxes are designed to accommodate the physical dimensions of switches and receptacles, ensuring that they remain accessible for operation while also allowing for proper wiring connections within the box.

While accessory boxes may also play roles in other functions within an electrical system, such as making splices or providing space for certain connections, their primary function aligns with supporting devices like switches and outlets. This functionality is critical for maintaining both accessibility for the end user and compliance with safety standards outlined in the National Electrical Code.