National Electrical Installation Standards

Standards as High as Your Own

 
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Monday, July 1, 2013

Question:

Good Morning Charlie,

I was wondering what section in the Code says that when you install a metal or plastic old-work box that it has to be flush with the sheet-rock?

Thanks,

Greg

 

 

A

Answer:

Hi Greg,

Thanks for participating. Article 314 provides the requirements for boxes. Part II of the article includes installation requirements. Section 314.20(A) indicates that in walls or ceilings with a surface of concrete, tile, gypsum, plaster, or other noncombustible material, boxes employing a flush-type cover or faceplate must 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 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. Section 314.23(D) requires such boxes to be rigidly secured to the wall surface by an identified means such as anchors, clamps or fittings. Many old-work boxes (cut-in) boxes are manufactured with a securing or clamping means that is an integral part of the box and the assembly is identified for this application. Follow the manufacturer’s instructions.

 

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CHARLIE TROUT: Charles M. Trout, better known as Charlie, was a nationally known NEC® expert and author. He served on several NEC® technical committees and is past chairman of CMP-12. In 2006 Charlie was awarded the prestigious Coggeshall Award for outstanding contributions to the electrical contracting industry, codes and standards development, and technical training. Even though Charlie passed away in October of 2015, his work continues in spirit. NECA continues to maintain this question forum for its many subscribers in memory and recognition of all his significant contributions to making the NEC what it is today.

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