Can i run 14 gauge romex in a 4 family wood framed building for lighting?
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334.10 Uses Permitted. Type NM, Type NMC, and Type
NMS cables shall be permitted to be used in the following,
except as prohibited in 334.12:
(1) One- and two-family dwellings and their attached or
detached garages, and their storage buildings.
(2) Multi-family dwellings permitted to be of Types III, IV,
and V construction.
(3) Other structures permitted to be of Types III, IV, and V
construction. Cables shall be concealed within walls,
floors, or ceilings that provide a thermal barrier of material
that has at least a 15-minute finish rating as identified
in listings of fire-rated assemblies.
Can i run 14 gauge romex in a 4 family wood framed building for lighting?
thats what I was looking for. The big question is where did this "myth" of everything needs to be run in 12 come from ??? Everyone around here electricians and engineers think you "have to" run 12 in commercial.
Not counting residential, I'd say the "myth" comes from the job specs. Every commercial job I've wired, #12 cu. was the minimum size conductor. JMHOthats what I was looking for. The big question is where did this "myth" of everything needs to be run in 12 come from ??? Everyone around here electricians and engineers think you "have to" run 12 in commercial.
4 family here is rated commercial
As far as I know, the NEC does not use the term commercial.
Ignorance of what the code actually says, but a lot of it has to do with job specs requiring #12 minimum for "commercial".
Yep, same reason you see so many 20 amp duplex receps in "commercial".
thats what I was looking for. The big question is where did this "myth" of everything needs to be run in 12 come from ??? Everyone around here electricians and engineers think you "have to" run 12 in commercial.
4 family here is rated commercial
You base this on something on other then 2014 NEC? For 2014 I think you are referring to 310.15(B)(3)(a)(4), (B)(2) is ambient temperature correction factors in 2014.Mounted ground up with stainless steel plates as well.
eta:
It may come from derating too; just more headroom with 12ga. Also, MC cable that is 12ga has some bundling advantages that 14 doesnt, specifically under 310.15(B)(2) exception #5.
You base this on something on other then 2014 NEC? For 2014 I think you are referring to 310.15(B)(3)(a)(4), (B)(2) is ambient temperature correction factors in 2014.
"Commercial kitchen" is the only example I can think of off the top of my head.
The big question is where did this "myth" of everything needs to be run in 12 come from ???
#12 is the minimum that can be used in my buildings.
Yes, but I assume that is just a spec. Yes?
Yes it is, as in most office buildings in our organization.