Fill in the blank with the appropriate answer.

When mounting receptacles in boxes that are set back from the finished surface as permitted in 314.20, the receptacles shall be installed so that the mounting yoke or strap of the receptacle is _________ .

A. tight against the box, which is set back no more than ¼ in.

B. secured by a self-grounding clip

C. held rigidly at the finished surface

D. secured by sheet metal screws

 

Answer: C

As noted in 406.5(A) of the 2011 NEC, "When mounting receptacles in boxes that are set back from the finished surface as permitted in 314.20, the receptacles shall be installed so that the mounting yoke or strap of the receptacle is held rigidly at the finished surface."

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.