How to determine bld type?

[GerryB]

I know there was a recent post about romex in a condo. I have a similar job and was trying to understand Annex E. You can use nmb in types 3, 4, and 5, right? This condo is 3 stories, brick, none of the interior walls are supposed to be load bearing. It has the big space above the ceiling, at least a foot like I have seen before where it's easy to fish. I can see wood joists up there. Then there is metal channel that was used to screw the sheet rock to.
Annex E says type 4 is seldom used for multifamily, so maybe that's not it.
I am leaning towards type 3 but I really don't know. I don't know what the floors in between are. What I know is the new kitchen opening was framed with regular studs. The building is sprinklered. The maintence/building guy said you don't have to run bx anymore, I'm assuming he knows that from other remodels in the complex. All would have been done under permits.
I only have two runs in the ceiling but still easier with romex. My question is fire rating between floors, romex and plastic boxes I believe are ok. Most of the plastic say 2hr on them.
Any links or help understanding Annex E would be appreciated. Thanks.

 

[jaylectricity]

My only help is to tell you that unless a local ordinance prohibits it, you are fine to use romex in that building.

You said something about not knowing what the rest of the building was used for, so the other thing is to make sure it isn't a place of assembly.