×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Roof Fan Grounding

Roof Fan Grounding

Roof Fan Grounding

(OP)
I just walked our building roof and noticed tat some fans have external grounds and some don't.  Just wondering what common practice is.  NEC doesn't address it except in 430.12 where it implies that it may sometimes be required. I would think it's safer just to do it as I have a ground loop around the perimeter of the building.

RE: Roof Fan Grounding

Are these grounds possibly for lightning protection?

RE: Roof Fan Grounding

(OP)
Yes, I found out they were added for lightning protection due to the presence of pyrophoric gas storage in the vicinity.

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!


Resources