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

question 31

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" from
• B) not be set back farther than 1/4" from
• C) nor be set back farther than 1/2" from
• D) be flush with

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