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Re: CQD answer published Wednesday, June 17, 2018 -TIA Process
1)Firstly, I thank you for your hard work in keeping this Q&A site operating. Wednesday and today's questions are excellent. The question of Tentative Interim Amendments is really important as municipalities that adopt the code only adopt it as written and any changes have to been added by legislation. In a legal proceeding that would claim that a TIA was not complied with would be very hard to uphold unless somehow upon the code adoption they added the caveat that all TIAs are included. I doubt a municipality would do that; it takes away their free choice and leaves them open to lawsuits. Your educating all of us here on this topic will help inform the many electricians, inspectors, and engineers who look to the code for guidance and compliance, and safety. Fan shut down in a fire situation, smoke situation, or other emergency situation is a great question. Any fan is going to increase the growth of fire. It would create a much more complicated Fire Alarm to have to shut down all fans but it is a question that begs clarification. All the best, Jeff Glanstein
2) You have it just right that the local AHJ and their adoption process decides this issue. BUT, also to be considered is that, as far as I know, the TIA only modifies the most recent version of the NEC - at this time that is the 2017 version. If the area of jurisdiction involved for the permitted installation is still using the 2014 NEC or has not adopted Article 625 of the 2017 NEC, then I expect that this TIA would have no bearing on the issue. As always, thanks for the great Forum of Discussion. Scott Cline
3)Thank you for the helpful information. Otherwise may not have known of these invaluable resources. Nick Castillo
Hey Guys thanks for your comments and kind words. You added some important additional clarifying points. A TIA applies to the code or standard it is referenced to and is effective from NFPA's perspective but not necessarily from the municipality that adopts the NEC or other standard. They do give us a sense of what the committee's consensus position is though.
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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.
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