When Device Boxes Are Installed in Walls or Ceilings with a Combustible

Multiple Choice

When device boxes are installed in walls or ceilings with a combustible surface such as wood, the edge of the boxes must __________ the finished surface.

A) not be set back farther than 1/8 inch from
B) not be set back farther than 1/4 inch from
C) nor be set back farther than 1/2 inch from
D) be flush with