Box lip protruding

[rbwillis]

Hello,

Can anyone tell me if there is a requirement in the Code (and if so where) that box lips must be within a certain distance, but not protruding beyond the surface?

I heard of this on a recent project, but I'm not sure if it was just an EE's spec requirement.

 

[chris kennedy]

Welcome to the Forum. Not to sure what box lips are but...

314.20 In Wall or Ceiling.
In walls or ceilings with a surface of concrete, tile, gypsum, plaster, or other noncombustible material, boxes employing a flush-type cover or faceplate shall be installed so that the front edge of the box, plaster ring, extension ring, or listed extender will not be set back of the finished surface more than 6 mm (? in.).
In walls and ceilings constructed of wood or other combustible surface material, boxes, plaster rings, extension rings, or listed extenders shall be flush with the finished surface or project therefrom.