Send to a Friend View / Add Comments  

Some of you have completed our Online Continuing Education Courses which include video instruction. For the rest of you we are sending a weekly series of newsletters featuring an instructional page complete with videos.

To view the videos you will need to download the free Real Player Download Real Player plugin for your browser - if you don't already have it. After installing Real Player, you can view the videos by clicking on one of these icons:

  • Click on this icon Hi Res - Cable/DSL [5622Kb] if you have a cable or DSL connection.
  • Click on this iconLow Res - Modem [1695Kb] if you have a Dial-up connection.

Below is the full course page which includes these videos:

Article 334 (336 in 1999 NEC) Low Res - Modem [1695Kb] Hi Res - Cable/DSL [5622Kb]        Page 4 of 7
Nonmetallic-Sheathed Cable

334.12 Uses Not Permitted

This new rule prohibits the installation of NM cables above suspended ceilings in commercial occupancies because the task group on NM cable felt that NM cable in this space could be damaged by maintenance and other trades, sharp edges on air handling equipment, or rough weld seams on bar joists.

(A) Types NM, NMC, and NMS. Types NM, NMC, and NMS cables shall not be used in the following:

1. In any multifamily dwelling or other structure exceeding three floors above grade

Intent: The rule that limiting NM cable to buildings of three floors was removed.

  [ Back to Top ]

Copyright © 2003 Mike Holt Enterprises,Inc.
1-888-NEC-CODE (1-888-632-2633)