Receptacle installation

Mike01

Senior Member
Location
MidWest
While on a project site the electrician installed backboxes with extension rings however with the additional wall covering the receptacle when installed flush is not completely recessed into the raised cover plate? Someone indicated that the code allows this seperation between the receptacle and the raised cover / mud ring as long as it does not exceed 1/4"? After further research I could not find anyting to reference this, it appears the receptacle when installed is "exposed" between the gypboard and the device raised cover plate / mud ring of apporx. 1/4" is this typical or accpetable my suggestion was a box extender? Is there anywhere in the code that permits this type of installation?
 

LEO2854

Esteemed Member
Location
Ma
While on a project site the electrician installed backboxes with extension rings however with the additional wall covering the receptacle when installed flush is not completely recessed into the raised cover plate? Someone indicated that the code allows this seperation between the receptacle and the raised cover / mud ring as long as it does not exceed 1/4"? After further research I could not find anyting to reference this, it appears the receptacle when installed is "exposed" between the gypboard and the device raised cover plate / mud ring of apporx. 1/4" is this typical or accpetable my suggestion was a box extender? Is there anywhere in the code that permits this type of installation?
I don't think there is a code for that but the receptacle should fit in the cover so you would not need long screws to hold the cover on.
 

roger

Moderator
Staff member
Location
Fl
Occupation
Electrician
See 314.20

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 (1/4 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.

Roger
 

Strathead

Senior Member
While on a project site the electrician installed backboxes with extension rings however with the additional wall covering the receptacle when installed flush is not completely recessed into the raised cover plate? Someone indicated that the code allows this seperation between the receptacle and the raised cover / mud ring as long as it does not exceed 1/4"? After further research I could not find anyting to reference this, it appears the receptacle when installed is "exposed" between the gypboard and the device raised cover plate / mud ring of apporx. 1/4" is this typical or accpetable my suggestion was a box extender? Is there anywhere in the code that permits this type of installation?
314.20 is the code section.
 
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