Do the following items count towards box fill: Bushings, Hickeys, and Single pole switch?

When assessing whether items such as bushings, hickeys, and single pole switches count towards box fill, it's crucial to understand the National Electrical Code (NEC) regulations that govern these components within an electrical box.

Bushings are used to protect wires as they pass through metal enclosures and can take up space within the box. Although they protect the conductors, they are considered part of the box fill calculations because they occupy physical space.

Hickeys, which are used to connect conduit runs, also occupy space within an electrical box. Since they are not hollow and physically take up room, they contribute to box fill calculations.

Single pole switches, while serving a functional purpose by controlling lighting or devices, also take up space in the box. Therefore, just like other devices or fittings, they count towards the overall fill of the box.

Since all of the mentioned items—bushings, hickeys, and single pole switches—physically occupy space within an electrical box, they are included in the calculations for box fill. Thus, the correct answer is that yes, all of these items count towards box fill.