User Tag List

Results 1 to 4 of 4

Thread: Testing and Verifying Grounding ?

  1. #1
    Join Date
    Jul 2008
    Location
    North Of Tampa Fl
    Posts
    451
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Testing and Verifying Grounding ?

    Our manufacturing plant was built in 1984 . We have about 150,000 sq ft of manufacturing area plus office space . The structure is metal columns bolted on concrete pads with concrete floors and concrete walls . The metal columns and bar joists are all welded and bolted together . We have quite a few areas with chemical containers which are bonded to the nearest building steel for static charge . Our safety department is inquiring about doing annual testing to verify the bonding and grounding in the plant . ( 1) What kind of testing would be recommended for the static grounds ? ( 2 ) As we have five services into the plant what would we want to do to verify the original grounds and the existing grounding in the plant ? I know we could get a ground tester and use a ohm meter for continuity but as this something we haven't done I want to be sure we use the correct approach to do this ...

  2. #2
    Join Date
    Feb 2005
    Location
    Charlotte, NC
    Posts
    6,807
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Low R ohmmeter for connections, 3 pt FOP test for your ground. Any testing company can do that for you and do it right.

  3. #3
    Join Date
    Jun 2017
    Location
    WI, USA
    Posts
    385
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You might review NFPA 70B for intervals. Annual visual inspect is more appropriate with actual testing ever few years. 70B,NETA and NECA will help with the method.

    http://www.nfpa.org/Codes-and-Standa...ds/Free-access

  4. #4
    Join Date
    Aug 2004
    Location
    Northern illinois
    Posts
    16,998
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    do you want to test grounding or bonding?

    if so, what are your pass/fail criteria?

    the NEC criteria is essentially that the connection is made and that can be verified by a visual inspection.
    Bob

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •