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Posted By: sparky 4 story NM-B ? - 09/28/01 11:10 AM
Apparently the 'Nayional Multihousing council" has appealed proposal 7-137 over the heads of CMP-7 and the Technical Correlating Committee to the NFPA's "Standards Council" to allow NM-B per art 336 in over 3 stories;

some rop's here; http://www.necdirect.org/pdfs/A331-340.pdf

comments?curses?death threats???
Posted By: nesparky Re: 4 story NM-B ? - 09/30/01 03:07 AM
The oldest story MONEY talks. Soon enough the big boys will get to use romex anywhere and not have to pay for licensed workers.
Posted By: Anonymous Re: 4 story NM-B ? - 09/30/01 03:23 AM
Is that the deal? It takes to much skill to run anything other than NM cables?
Posted By: sparky Re: 4 story NM-B ? - 09/30/01 04:01 PM
hmmm, well...i DO get the impression that there is way more of a $$$ influence invovled than anything else.

I've also been informed that the NM rule was not always around....and that the 'substaintiation' for the change was apparently more $$$$ based than one centering on saftey... [Linked Image]

Any older 'precode'* electricians care to comment???

* well maybe that's not the correct word, but U get the idea...
Posted By: Steve Miller Re: 4 story NM-B ? - 10/03/01 02:58 AM
For what it's worth ... in one of our local counties (Montgomery Cty MD) they have modified the rule to read no RX in any structure over 3 floors. Don't matter if it's a 4 floor, underground pkg garage. 3 is the limit; they count unfinished basements, parking levels, finished attics and everything in between. The GC's are having a fit over the cost of the electrical part on some of these taller houses.
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