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

Bushing Bonding on a Pullbox

Bushing Bonding on a Pullbox

Bushing Bonding on a Pullbox

Hi all,

In the attached photo, power and control cables PASSES through with no splicing or exposed cores. The upper portion of the pull box have all the cable entry bushings bonded to the Pull Box. The bottom bushings are not and they are not listed for equipment bonding.

My question is, do we need to have the bottom bushings bonded the same way as the top? I find it an overkill to bond all the bottom bushings as the cables are just "passing through".

Your opinion on the matter and any narrative as why we don't need or need are highly appreciated.


RE: Bushing Bonding on a Pullbox

By the way, the "bushings" at the box are actually cable glands. We were thinking of using earth tags and cut them to a "fork-tongue" shape. But aren't cable glands maintain the continuity of the armor or shield within the gland itself? In this case, single point grounding at the top will be adequate as the ground fault from within will travel through the armor and into the bushing?

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


White Paper - How ESI is Helping Move New Medical Device Product to Market Quicker & More Cost Effic
Early Supplier Involvement has long been a strategy employed by manufacturers to produce innovative products. Now, it almost seems like a necessity. Because decisions made in the design phase can positively affect product quality and costs, this can help add value to OEM bottom lines. This white paper will discuss many facets of ESI, including why it’s so valuable today, what challenges limit the benefits of ESI, how cost is impacted, 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