Romex In commercial basement.

[Oldmaster2]

Can Romex be exposed across a ceiling in a commercial basement? It is fastened good and follows the building contour.

 

[tom baker]

Maybe.
Commerical is very broad, what is the building type construction?
Look at uses allowed in the romex article

 

[infinity]

Is there a hung ceiling? If so then no.

 

[rnatalie]

"Commercial" isn't really a factor. Other than one- and two-family dwellings is really what you mean. It requires it to be protected by a 15-minute thermal finish barrier and only in class III (masonry), IV (heavy timber), or V (protected wood frame). Exposed won't cut it. Cable trays, drywall, or certain ceiling tiles will be allowable.

 

[infinity]

"Commercial" isn't really a factor. Other than one- and two-family dwellings is really what you mean. It requires it to be protected by a 15-minute thermal finish barrier and only in class III (masonry), IV (heavy timber), or V (protected wood frame). Exposed won't cut it. Cable trays, drywall, or certain ceiling tiles will be allowable.

What ceiling tiles would be allowable? It is not permitted above a hung ceiling except in one and two-family and multifamily dwellings.

334.12 Uses Not Permitted.
(A) Types NM, NMC, and NMS. Types NM, NMC, and NMS
cables shall not be permitted as follows:
(1) In any dwelling or structure not specifically permitted in 334.10(1), (2), (3), and (5)
(2) Exposed within a dropped or suspended ceiling cavity in other than one- and two-family and multifamily dwellings

 

[electrofelon]

Can Romex be exposed across a ceiling in a commercial basement? It is fastened good and follows the building contour.

NO

 

[Another C10]

I would say MC if anything, leave the plastic in a closed wall were it belongs or in an attic or basement, typically were it couldn't be readily accessible to physical damage, It seems California in many cities now allow it in garages above 10' or so, to me it's just tacky looking out in an open space. just my opinion.

 

[hbiss]

it's just tacky looking out in an open space. just my opinion.

Mine also. Unprofessional.

-Hal

 

[rnatalie]

(2) Exposed within a dropped or suspended ceiling cavity in other than one- and two-family and multifamily dwellings

Dropped/suspended is right out. A fixed tile ceiling that mounts to the framing directly would provide sufficient protection (if the tiles are rated as such).