![]() ![]() If the box is less than 1/4" from the finished surface, you can use as many spacers as needed to mount the receptacle in such a way that the yoke is held rigidly at the finished surface. 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. 4 IN RAISED ROUND COVER, 1/2 IN W/ 2 3/4 IN EARS 54 C 3 1/2 Thomas & Betts. 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 6mm (1/4). 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.). ![]() 19), top row) or an outlet box with a plaster ring. National Electrical Code 2011 ARTICLE 314 Outlet, Device, Pull, and Junction Boxes Conduit Bodies Fittings and Handhole Enclosuresģ14.20 In Wall or Ceiling. .identify and explain the electrical outlet symbols used in the plans of the single-family dwelling. If the backsplash has caused the boxes to be set back more than this, you'll have to use extenders to bring the box out to the proper depth. The Polyvinyl chloride (PVC) construction is compatible with all box styles including PVC, fiberglass or steel. You can then cut the required installation opening using standard. Electrical Receptacle Box Extension Ring extends receptacles or switch boxes flush with a newly installed wall surface such as tile, wainscott or drywall. If you're in an area that follows National Electrical Code (NEC), the boxes cannot be set back more than 1/4" (6 mm). The front parts for universal opening sizes can be plastered locally or plastered over. Here is an example of a metal box extender that works in a telescopic manner to accommodate just the amount of extension that you require. Other factors would be amount of extension needed and whether you are dealing with a single width type box or a wider type. ![]() The inner ring can be adjusted from ½ to 1-3/8 after the drywall has been installed to match the depth. Perfect for boxes mounted behind drywall or ceramic tile that are thicker or where the depth varies. There are options for metal or plastic boxes for starters. RACO’s new mud rings, or plaster rings, provide a quick and easy way to ensure a flush finish for stud-mounted outlet boxes. These come in a number of styles depending on the type of electrical boxes you have. If your problem is that the thickness of the back splash material has caused the electrical boxes to become recessed you may need to use electrical box extenders. ![]()
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