User Tag List

Page 2 of 2 FirstFirst 1 2
Results 11 to 15 of 15

Thread: Generator, ground rod or not

  1. #11
    Join Date
    Dec 2007
    Location
    NE Nebraska
    Posts
    39,659
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by don_resqcapt19 View Post
    Not sure you really have a concrete encased electrode. That must be in a footing or foundation. If the generator is just on a concrete pad, it would be my opinion that you don't have a CEE.
    I'm guessing he has something typical to what I may see around here. Center pivot irrigation machine, the center pivot attaches to a concrete pad, whether or not the pad has a CEE depends on construction of the pad. Some may have a footing and pad all in one concrete pour. The generator is likely powered by diesel engine that also drives the well pump. There is no utility power, only the on site derived power from said generator. Generator powers the center pivot machine.

    Separately derived term as used when talking about transfer switches doesn't apply, there is no transfer switch.

    Separately derived term would only mean it is on site derived supply and not a utility supply (service). There is not ordinarily any 277 volt loads so dealing with neutral conductors isn't an issue either than that it does have a neutral from the supply and it gets bonded usually right at the generator and from there on is EGC and/or GEC. Won't say they are always done to code here, but are pretty much never inspected either so nobody is enforcing code. Don't know I ever seen a GEC connected directly to one, is usually at first disconnect - usually within the center pivot control panel.

    Most are only 10 kVA generators also.
    I live for today, I'm just a day behind.

  2. #12
    Join Date
    Apr 2008
    Location
    Central Wisconsin
    Posts
    53
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It is ufer, full 20’ rerod encased in concrete, cement pad minimum 10’ sq. plus.
    Also, just found out from the state that with the CEE no supplemental rod is required.
    The generator main disc. which is connected to the generator frame, (bonded) will need to be connected to the grounding electrode system. All good.
    Thanks for the help.

  3. #13
    Join Date
    Apr 2008
    Location
    Central Wisconsin
    Posts
    53
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    To make sure we are doing things to code, which in this case we were, we ask questions from our inspectors when we see them on site. We are fortunate here in Wi. to have our inspectors, state and otherwise so available to stay in touch with the code and to ask questions. Our installs are regularly inspected. We look at it as not so much a nuisance but as an opportunity to gain knowledge.

    Thanks to all,
    Got to go, just saw a White Walker

  4. #14
    Join Date
    Feb 2003
    Location
    Illinois
    Posts
    23,961
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by kwired View Post
    .. Don't know I ever seen a GEC connected directly to one, is usually at first disconnect - usually within the center pivot control panel.

    Most are only 10 kVA generators also.
    If there is no OPCD at the generator, the GEC connection and system bonding jumper at the first disconnect is fine. If there is an OCPD at the generator, the code requires those connections at the generator.
    Don, Illinois
    (All code citations are 2017 unless otherwise noted)

  5. #15
    Join Date
    Dec 2007
    Location
    NE Nebraska
    Posts
    39,659
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by don_resqcapt19 View Post
    If there is no OPCD at the generator, the GEC connection and system bonding jumper at the first disconnect is fine. If there is an OCPD at the generator, the code requires those connections at the generator.
    You probably don't want to know how many are out there with a 30 amp miniature 500 volt fuse block attached to back side of generator peckerhead cover for OCPD at the generator, and still no GEC until you get to the pivot panel, which may be within 10 feet or could be 2000 feet away.
    I live for today, I'm just a day behind.

Posting Permissions

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