×
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

unit substation ground grid

unit substation ground grid

unit substation ground grid

(OP)
The contractor is suggesting building a ground grid out of one continuous ground wire run back and forth, to be installed in the floor slab. Question: does the crossing of the wire need to be welded/crimped toegether in this situation?

RE: unit substation ground grid

ATT604
The ground grid needs to be connected at crossing locations because one of its main functions is to direct electric currents into earth under normal and fault conditions.  If not connected, these points where ground wires cross would tend to heat up due to being a 'higher resistive' location in the grid.  When you say floor slab do you mean a concrete floor?  If so, someone else can provide better guidance on methods for grounding.

RE: unit substation ground grid

If this is a concrete floor slab, the rebar generally provides adequate grounding.

RE: unit substation ground grid

ATT604:

Each electric utility has their own etablished standards and contractor must built-to-spec. Follow & stick to your standards.

Power quality solutions that empower you!!!

-----------------------

http://WWW.POWERCHX.COM

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