Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Romex Wire In Commercial Project

Romex Wire In Commercial Project

Romex Wire In Commercial Project

We were called in to help a customer that was in trouble with the State Fire Marshal. They have a Physical Therapy business and lease the space they are in. They are also affiliated with a local hospital. We have built all required fire walls and are complete with our portion of the work. The problem is there was Romex wire above a lay in ceiling. Our electrician has changed all the romex above the ceiling as directed by the inspector. The problem is where there is a transition between the junction box and the wall or top of studs. The electrician says that a small piece of romex can be visible between the wall and the junction box and the Fire Marshal says absolutely no romex can be visible. Who is right and where in the code can I find the answer? As is evident I am not an electrician.


RE: Romex Wire In Commercial Project

It doesn't matter for something like that. Trying to argue over it will ultimately take far longer than correcting the inspector's complaint, be it reasonable or not.

Keith Cress
kcress - http://www.flaminsystems.com

RE: Romex Wire In Commercial Project

I don't intend to argue with him. The electrician is doing what he wants done. This is just curiosity because the electrical code is like greek to me. I can understand the IBC and the variations of it the different states use but I have trouble finding what I need in the electrical code. If you could tell me were it deals with Romex in a commercial building or above a lay-in ceiling that would help.


RE: Romex Wire In Commercial Project

334.12(A)(2) says this: "(2) Exposed in dropped or suspended ceilings in other than
one- and two-family and multifamily dwellings."
If you can see it, it is exposed. If you set the junction box tight on top of the wall top plate, there will be no NM visible.

RE: Romex Wire In Commercial Project

Thanks resqcapt19 that is what I was looking for. It answers my question perfectly.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close