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Earthing and Bonding

Former Community Member
Former Community Member
Hi All


Working on a scheme whereby we have a private transformer serving the site - TN-S arrangement. This comes into the building, we then split to feed a switchboard in one part of the building which is existing, the second split heads to a new build part which has the second switchboard. This new build contains swimming pool. The supply to the new switchboard is via a busbar 3L+N+PER. Question relating to earth bars - we currently have the main earthing bar at the intake point which is at the existing switchboard location - we then had cable feeding out to the new earth bar at the new switchboard location. Contractor is proposing that they remove this interlinking earth cable between bars, and take a bond directly from the new switchboard earth bar to the new earth bar in the room. Does this sound feasible - to me doesnt sound right, but I can't find anything specific to say not.


Many thanks
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  • 0
    Is any of this applicable?

    IET Forums - Earthing arrangement for two buildings (theiet.org)


    "What is the supply and earthing arrangement of the building that you intend adding the chiller to - knowing that will give you the best starting point but generally speaking regardless of one or two transformers, there is usually no real issue providing the supply from one substation to multiple buildings at LV - or as an alternative, having multiple HV and LV inputs to the same building


    Regards


    OMS"



    Z.
Reply
  • 0
    Is any of this applicable?

    IET Forums - Earthing arrangement for two buildings (theiet.org)


    "What is the supply and earthing arrangement of the building that you intend adding the chiller to - knowing that will give you the best starting point but generally speaking regardless of one or two transformers, there is usually no real issue providing the supply from one substation to multiple buildings at LV - or as an alternative, having multiple HV and LV inputs to the same building


    Regards


    OMS"



    Z.
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