Answer: 3/8 in. Explanation: Section 314.5(3) states, "Screws attaching a cover shall extend no more than 3/8 in. into the box." Lupacchino is a senior design engineer with Gaylor Electric, Inc. in ...

If you have the walls opened up for remodeling or putting on an addition, these three boxes cover about 99 percent of your needs. The purpose of electrical boxes Wiring connections—where wires join an ...