Are electrical rooms required to be enclosed within a room with rated walls? if so, what is the code reference?
What building code and edition are you using?
Same on electrical code
Building Code: 2015 IBC
Building Code: 2015 IBC (Existing)
Electrical Code: 2011 National Electrical Code
Electrical Code: 2014 New Mexico Electrical Code
NFPA: 2012 Life Safety Code
Kenneth Easton, CCCA
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Will have to research it more, but I am thinking no, unless in certain settings, say hospital or the like.
But read through this, in case it applies to anything you might do:
I have the same question. I've read through NFPA 70, 2017 and the Massachusetts amendments as well as the 2015 IBC with Massachusetts amendments and can find nothing regarding the wall rating around an electrical room. The use is B/F-1; the electric room is on an outside wall with >50' to nearest building wall, and shares a wall with an office.
I am being told there is a minimum 1 hr. rating by the building official, but he cannot cite the reference. Frustrating. Thanks in advance for any help or insight.
BTA, Mendon, MA
Yes, possibly 1-hour if you have a transformer in that room over a certain size, and if it doesn't meet the exceptions. See NEC 450.21(B). I'm using the 2017 edition.
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