Standards as High as Your Own
NECA Online Help Desk Please leave a message
Re: CQD answer published Fri day, June 8, 2018 -
Re cqotd 6/7/18 " ...but there is no exception that fits that usage for not securing the cables to boxes."
314.17(c) exception: where nonmetallic sheathed cable or multi conductor type UF cable is used with single gang boxes no larger than a normal size 57 mm by 100 mm mounted in walls or ceilings and where the cable is fastened with an 8in of the box measured along the sheath and where the sheath extends through a cable knockout no less than a quarter inch, securing the cable to the Box shall not be required.
Hey Positively Electrical thanks for your comment. You are correct that exception exists but typically applies to open walls during the electrical installations. Perhaps the words "that usage" could have been more descriptive in our answer. If cables are fished, as would very likely be the case for the pre-installed structural insulated panels, fastening the cable within 8 inches of a single gang box can't realistically be done. Typically "old work boxes" that include a means to secure the cable to the box are used and the boxes are flush mounted - being supported by the ceiling or wall surfaces.
ABOUT CQD: NECA’s Code Question of the Day (CQD) is a leading National Electrical Code® forum for NECA and the industry. The CQD generates a lively dialogue and relative practical and Code-based responses to an ever-increasing and interactive audience.
IMPORTANT NOTICE: All answers are based on the latest edition of the National Electrical Code®, unless the question requests a response based on a specific edition. This correspondence is not a formal interpretation of the NEC®. Any responses expressed to the questions are opinions and do not necessarily represent the official position of NECA, NFPA, or any technical committee. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services.
ABOUT CHARLIE: 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. Charlie was also a member of NECA’s Academy of Electrical Contracting. Charlie’s experienced team of industry experts keep the CQD dialogue and discussions active and informative in the spirit of the man himself, as he wanted.
NECA STANDARDS: NECA publishes the National Electrical Installation Standards™ (NEIS™), a series of ANSI-approved performance and quality standards for electrical construction. Visit NECA-NEIS.org for more information. NEISÃ” can be purchased in three formats: as paper books, on CD, or as electronic downloads.
NECA SAFETY PRODUCTS: NECA publishes valuable electrical safety books and CDs for the industry. Visit necanet.org/store to view or purchase NECA safety products.
CONTACT US: To submit a Code question, subscribe, or unsubscribe from this list, please e-mail: firstname.lastname@example.org.
© 1999 – 2014 National Electrical Installation Standards. All rights reserved.
Brought to you by NECA. NECA is the voice of the electrical contracting industry NATIONAL ELECTRICAL INSTALLATION STANDARDS, NEIS and the NEIS logo are registered trademarks of the National Electrical Contractors Association.
Created by Matrix Group International, Inc.