As a representative of the electrical inspection community, I am often asked, “What are some of the most common Code violations you encounter?” While violation of box fill requirements might not be No ...

Wires aren't the only things that count during box fill calculations, however. You also need to take into account the cable clamps, outlets, switches, and other items you intend to put in the box.

Exception: Equipment grounding conductors — and up to four 16 AWG and smaller fixture wires — can be omitted from box fill calculations if they enter the box from a domed luminaire or similar canopy, ...