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.
All of Article is 645 is voluntary unless you want to take advantage of the leniences it allows in wiring methods.
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.