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Thread: NEC Article 645 and NFPA 75

  1. #1
    Join Date
    Jun 2008
    Location
    Campbell CA
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    226

    NEC Article 645 and NFPA 75

    Hi everyone, I like to know if there is any exceptions to requirements NEC-645 which permits a IT room not to be fire resistant-rated walls, no need for EPO's as per 645-10, and that we donot have to install fire/smoke dampers.
    Thanks in advace for the input.

  2. #2
    Join Date
    Feb 2003
    Location
    Massachusetts
    Posts
    49,225
    All of Article is 645 is voluntary unless you want to take advantage of the leniences it allows in wiring methods.

  3. #3
    Join Date
    Feb 2003
    Location
    New York, 40.7514,-73.9925
    Posts
    3,346
    Well said by Bob.
    645.4 indicates that the article only applies if you provide EPO's, fire rating, etc.
    NFPA 75 is a standard and not a code adopted by any jurisdiction that I am aware of.
    Ron

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