A metal device box has two 14 AWG conductors, one 14 AWG grounding conductor, two internal clamps, and a duplex receptacle. What is the minimum size metal device box you could use?

Question

Quizplus · Accepted Answer

According to the National Electrical Code (NEC), a device box must have enough space to contain all conductors and devices within it. For a metal device box with two 14 AWG conductors, one 14 AWG grounding conductor, two internal clamps, and a duplex receptacle, the minimum size required would be calculated using the fill capacity calculation. Based on the fill capacity calculation in NEC Table 314.16(A), the minimum size metal device box that could be used for this scenario would be 3 * 2 * 2 1/2 inches. Therefore, the best choice is C.

A Metal Device Box Has Two 14 AWG Conductors, One