When installing a 4″ x 1-1/2″ metal octagon box with a flat cover, what is the maximum number of 14 AWG conductors allowed in the box?

To determine the maximum number of 14 AWG conductors that can be installed in a 4" x 1-1/2" metal octagon box, we can refer to the National Electrical Code (NEC) guidelines on box fill calculations. For a box size of 4 inches by 1-1/2 inches, the box has a specific volume capacity based on its dimensions and design.

Each 14 AWG conductor typically has a fill requirement of 2 cubic inches. When considering the volume of the octagon box itself, metal boxes also have a volume allowance for their metal construction. The NEC stipulates that you take into account not only the volume of the conductors but also any internal fittings, devices, or fixtures that may occupy space within the box.

In the case of a 4" x 1-1/2" metal octagon box, when adding the volume requirements of the individual 14 AWG conductors, we find that the physical capacity allows for a maximum of 7 conductors. This rule is established to ensure that there is enough space within the box for air circulation and to prevent overheating and ensure safe electrical practices.

This consideration makes option C the correct answer, as it complies with