codequestion
Banned
- Location
- MD, USA
I have night dance club in which wiring method used is Romex cable. Is wiring method Romex cable permitted in this sort of commericial application per NEC 2014?
Romex cable club
- Thread starter codequestion
- Start date
- Status
hbiss
EC, Westchester, New York NEC: 2014
- Location
- Hawthorne, New York NEC: 2014
- Occupation
- EC
Until I read your post I thought you were talking about a bunch of electricians that only use Romex and get together for drinks once a week. :lol:
-Hal
-Hal
JFletcher
Senior Member
- Location
- Williamsburg, VA
Is this a new project or something already wired/existing? If the latter, it would depend on what code was adopted when it was wired.
codequestion
Banned
- Location
- MD, USA
New project going to be wired. Was wondering drawings call for Romex as wiring method but not sure if it can be used.
Last edited:
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
Type of construction, Place of assembly? Not allowed above a suspended acoustic ceiling.
- Location
- Logan, Utah
- Location
- Logan, Utah
As Ron pointed out there are a few things that you need to look at to decide if you can wire this building with NM Cable.
Is the Type of Construction permitted to be of Type II, IV or V?
Also Article 518 could also come into play.
Chris
Is the Type of Construction permitted to be of Type II, IV or V?
Also Article 518 could also come into play.
Chris
codequestion
Banned
- Location
- MD, USA
Its a club. It is place of assembly about 90 person gather. Where do i find not allowed acoustic ceiling commeticial in nec and how do i know construction type?
- Location
- Logan, Utah
The Occupant load will be determined by the Building Code and it is based on square footage.
Check out 334.12(2) for the prohibition to using NM cable in a suspended ceiling.
"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"
Also check out Annex E in the 2014 NEC for Types of Construction.
Chris
codequestion
Banned
- Location
- MD, USA
Ok it is assembly occupancy load is 102. So do i need to consider construction type?
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
Technically, you need to consider what construction type would be required under current code rather than what the actual construction type is.
The occupancy load will have an effect on determining required construction type.
If the current construction type would have allowed NM (Romex(TM)) at the time it was built but current does does not allow it you are in a gray area of AHJ interpretation.
- Location
- Logan, Utah
Yes, you need to consider construction type.
The other thing you will need to determine is whether or not the walls of the club will be of fire rated construction.
Chris
codequestion
Banned
- Location
- MD, USA
Assembly with occupancy load 102 construction type II. So I can use Romex?
- Location
- Logan, Utah
The question boils down to whether or not the building is permitted to be of Type III, IV or V. If the building is not permitted to be of those types and is built as a Type II building then NM cable is not permitted.
Chris
mopowr steve
Senior Member
- Location
- NW Ohio
- Occupation
- Electrical contractor
If it has an occupancy listed as 102 then it falls under code as a place of assembly and if I'm not mistaken romex(nm-b) is not allowed.
- Location
- Logan, Utah
NM cable is allowed in an assembly occupancy in walls floors and ceilings that are non-rated construction.
See 518.4(B) that I quoted earlier.
Chris
Very good..........
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
I would NOT interpret that to allow use of NM in non-rated (if there is a way you could get them non-rated) walls erected in the middle of a rated occupancy.
I do see it as applying to a multiple use building with identifiable sections and to walls that are not part of a rated occupancy section.
Do you have AHJ experience to support your interpretation? If so, I am happy to be educated.
In other words, a wall which is not a boundary wall inside a rated occupancy may not have a specific fire rating assigned, but I would still not use NM in it.
- Location
- Logan, Utah
I should have worded that better.
NM cable shall be permitted to be installed in those buildings or portions thereof that are not required to be of fire-rated construction.
There are examples of situations that would require fire rated construction on specific walls such as exterior walls that are less than 10' from a property line but the rest of the building could be built of non-rated construction. In that situation I would say that 518.4(B) would allow the non-rated construction to be wired with NM cable.
Chris
codequestion
Banned
- Location
- MD, USA
In my case i have adjacent tenants and walls touching those tenants are fire rated but in middle of my space their are partition such as for bathroom, various dance floors that are not fire rated. The building construction is type II with my space occuoancy load 102. Can I use romex on the non fire rated wall in the middle of my space?
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