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Ground fault- Why doesn't anyone get shocked?

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    Originally posted by mbrooke View Post
    But the graph is:
    ...
    UL felt it good enough to be taken seriously here using it as a foundation on which industrial GFCI protection is implemented.
    LV GFCI and MV are not the same application of course.

    Originally posted by mbrooke View Post
    But I am theorizing that in some cases it does more harm then good.

    2.4kv can be brought into the structure.

    There is nothing in the NESC which says this voltage must be cleared under 5 cycles.


    I'd like my theory challenged and discussed because its something I'm genuinely curious about.
    The NESC does say that the primary and secondary neutral should be connected when you have a MGN system.
    BB+/BB=?

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      Originally posted by mivey View Post
      LV GFCI and MV are not the same application of course.
      True- but the physiological response to any given shock does not change.


      The NESC does say that the primary and secondary neutral should be connected when you have a MGN system.

      True- but nothing on how to limit the duration of the voltage imposed on the LV neutral.
      Our comedian shamelessly joked about a blackout. Talk about dark humor.

      Comment


        Originally posted by mivey View Post
        LV GFCI and MV are not the same application of course.


        The NESC does say that the primary and secondary neutral should be connected when you have a MGN system.
        Food for thought. What do you think? Is this a legit way of determining if they should be interconnected?
        Attached Files
        Our comedian shamelessly joked about a blackout. Talk about dark humor.

        Comment


          ...
          Attached Files
          Our comedian shamelessly joked about a blackout. Talk about dark humor.

          Comment


            vvv
            Attached Files
            Our comedian shamelessly joked about a blackout. Talk about dark humor.

            Comment


              ooo
              Attached Files
              Our comedian shamelessly joked about a blackout. Talk about dark humor.

              Comment


                iii
                Attached Files
                Our comedian shamelessly joked about a blackout. Talk about dark humor.

                Comment


                  uuu

                  Attached Files
                  Our comedian shamelessly joked about a blackout. Talk about dark humor.

                  Comment


                    Looks like some of these 'earthing systems' make a difference Mr. mbrooke .....~RJ~

                    Comment


                      Originally posted by romex jockey View Post
                      Looks like some of these 'earthing systems' make a difference Mr. mbrooke .....~RJ~
                      Appears that they do
                      Our comedian shamelessly joked about a blackout. Talk about dark humor.

                      Comment


                        Maybe i was channeling Mr Kirchhoff again......~RJ~

                        Comment


                          Originally posted by romex jockey View Post
                          Maybe i was channeling Mr Kirchhoff again......~RJ~
                          What do you have in mind?
                          Our comedian shamelessly joked about a blackout. Talk about dark humor.

                          Comment


                            Earth's R factor.....~RJ~

                            Comment


                              Originally posted by romex jockey View Post
                              Earth's R factor.....~RJ~


                              Seems to play a role here.
                              Our comedian shamelessly joked about a blackout. Talk about dark humor.

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