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    Multiple system ground rods

    I have always understood the code to mandate only one system ground at the point of first overcurrent protective device. Recently a new electrical inspector began doing our inspections. In the following example he is requiring a second ground electrode and I believe he is wrong. Please clarify and help me understand the reasoning. The installation involves a combination meter/disconnect with a main breaker. We have always grounded the system at that point and carried the ground downstream through the 4th wire. Now the new inspector has required us to add an additional ground electrode at the remote panel location. Is this correct? And if so why?

    #2
    Originally posted by acespade21 View Post
    I have always understood the code to mandate only one system ground at the point of first overcurrent protective device. Recently a new electrical inspector began doing our inspections. In the following example he is requiring a second ground electrode and I believe he is wrong. Please clarify and help me understand the reasoning. The installation involves a combination meter/disconnect with a main breaker. We have always grounded the system at that point and carried the ground downstream through the 4th wire. Now the new inspector has required us to add an additional ground electrode at the remote panel location. Is this correct? And if so why?
    If the remote panel is on/in the same building he is incorrect.
    If it is in/on a separate building/structure he is correct.
    [COLOR=navy]If you aim at nothing, you will hit it every time![/COLOR]

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      #3
      Originally posted by Little Bill View Post
      If the remote panel is on/in the same building he is incorrect.
      If it is in/on a separate building/structure he is correct.
      It is the Main Service to only one building

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        #4
        Originally posted by acespade21 View Post
        I have always understood the code to mandate only one system ground at the point of first overcurrent protective device. Recently a new electrical inspector began doing our inspections. In the following example he is requiring a second ground electrode and I believe he is wrong. Please clarify and help me understand the reasoning. The installation involves a combination meter/disconnect with a main breaker. We have always grounded the system at that point and carried the ground downstream through the 4th wire. Now the new inspector has required us to add an additional ground electrode at the remote panel location. Is this correct? And if so why?
        I think he could be right. Is the meter on some kind of structure like a pole?
        Bob

        Comment


          #5
          Originally posted by acespade21 View Post
          It is the Main Service to only one building
          Service Equipment. The necessary equipment, usually consisting of a circuit breaker(s) or switch(es) and fuse(s) and their accessories, connected to the load end of service conductors to a building or other structure, or an otherwise designated area, and intended to constitute the main control and cutoff of the supply.
          Service Conductors. The conductors from the service point to the service disconnecting means.

          So is the first point of disconnect for the service not on the structure of the remote panel ?
          CircuitRyder --- Unfortunately not all good ideas are code enforceable.

          Comment


            #6
            Originally posted by petersonra View Post
            I think he could be right. Is the meter on some kind of structure like a pole?
            The combination meter/disconnect is mounted on a 6x6 stub pole and is remote from the only building it feeds. The utility feed comes in underground, feeds the meter/disconnect, then the 4 wire feed goes out to a single panel in the building.

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              #7
              Originally posted by acespade21 View Post
              The combination meter/disconnect is mounted on a 6x6 stub pole and is remote from the only building it feeds. The utility feed comes in underground, feeds the meter/disconnect, then the 4 wire feed goes out to a single panel in the building.
              Inspector is correct on a separate grounding system for structure which will bond to non current carrying metal & conductors only.
              CircuitRyder --- Unfortunately not all good ideas are code enforceable.

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