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

conduit installation in class 1, div 2 areas

conduit installation in class 1, div 2 areas

conduit installation in class 1, div 2 areas

I am installing equipment in a hazardous (C1, D2) location.  All the instrumentation is XP rated for this area.  The enclosure is also located in this classified area.  The enclosure is a NEMA 12 type with an argon purge.  As I interpret my NEC manual, that should be suitable.  I have used seals and meyers hubs to enter this enclosure.  I have two "junction boxes" (NEMA 12, no purge)mounted closer to the action that are used simply as a manifold for routing cables to the individual instruments from a couple of conduits.  Keep in mind that no terminations are made in these "junction boxes".  If the terminal chambers on the instruments are XP rated (I believe that means they are rated to contain an explosion), do I need to use seals at the entrance to these terminal chambers?  If so, then I have an alternate question.  I have read a reply to someone's question concerning seal-tite and EMT conduit stating that EMT could not be used, and that seal-tite was limited to 6 feet for grounding purposes.  If I use seals and supply a sufficient ground wire, then what is in between shouldn't matter, except for physical protection. Sorry I'm so long, but I do appreciate any advice.

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