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    subpanel grounding

    Need to install a sub panel next to an old 200 amp main panel with no main thats fed with an underground 3 wire system from a rural meter loop on pole.Where do you land the new subpanels neutral and ground on old panel?Do you have to separate old neutral and grounds on old panel?And should there be a main breaker installed in old panel?

    #2
    Originally posted by tdjs View Post
    Where do you land the new subpanels neutral and ground on old panel?
    Presuming there's only a single neutral/grounding bus, both should land there.

    Do you have to separate old neutral and grounds on old panel?
    With a 3-wire feeder, there is no way to separate them, nor is there a requirement to do so if compliant when installed.

    And should there be a main breaker installed in old panel?
    Again, no need if originally compliant.
    Master Electrician
    Electrical Contractor
    Richmond, VA

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      #3
      The last gentleman is correct.

      Comment


        #4
        Originally posted by Timy View Post
        The last gentleman is correct.
        That was no gentleman, that was just Larry!
        [COLOR=navy]If you aim at nothing, you will hit it every time![/COLOR]

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          #5
          Originally posted by Little Bill View Post
          That was no gentleman, that was just Larry!
          I resemble that remark!
          Master Electrician
          Electrical Contractor
          Richmond, VA

          Comment


            #6
            Originally posted by Little Bill View Post
            That was no gentleman, that was just Larry!
            I have a strange reputation around here. It's so strange, I'm not even sure what it is.
            Master Electrician
            Electrical Contractor
            Richmond, VA

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              #7
              Originally posted by Little Bill View Post
              That was no gentleman, that was just Larry!
              "Gentleman-- Who came in?" -- C. Howard

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