×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Zone 22 equipment

Zone 22 equipment

Zone 22 equipment

(OP)
Question in zone 22 (dust) is it allowed to install non-certified equipment, however it meets the requirements of industrial equipment such as IP 6x, surface temperature, non-sparking (junction box, switch, luminaires)If possible, what standard does it indicate?

RE: Zone 22 equipment

The NEC, NFPA 70, requires the equipment installed in a Zone 22 location to be listed and marked as suitable for the location. This is a bit more restrictive than the NEC requires for a Class II, Division 2 location.

CODE

506.20(C) Zone 22.  In Zone 22 locations, only equipment listed and marked as suitable for the location shall be permitted. 

Exception No. 1:  Apparatus listed for use in Class II, Division 1 or Class II, Division 2 locations with a suitable temperature class shall be permitted. 

Exception No. 2:  Pressurized equipment identified for Class II, Division 1 or Division 2 shall be permitted. 

Exception No. 3:  For Group IIIA materials, equipment listed for use in Class III, Division 1 or Class III, Division 2 locations with a suitable temperature in accordance with 500.8(D)(3) shall be permitted.] 

RE: Zone 22 equipment

(OP)
Tanks for feedback!!

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



News


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