Notification of potential a danger

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  • GCE
    Platinum Member

    • Jun 2017
    • 1473

    #16
    Originally posted by ians
    the solution seems simple ... if the supplier doent respond to your request and the COC is required just bridge the neutral and earth at the meter ... the only difference is the council bridge it on the pole or in the CDU. making it simple for them to remove once they attend to the problem.
    Reg6.1.6 does not allow you to bridge the suppliers earth and neutral .

    The problem doing that is if there are other users without the bridge and the transformer star point is stolen your service cable could suddenly become the neutral earth point for the transformer.
    The current could be way past your cable size and cause a fire.
    It is the reason the municipalities and insurance companies insist on 4 pole change over switches


    6.1.6 The neutral conductor shall not be connected direct to earth or to the
    earth continuity conductor on the load side of the point of control except as
    allowed in 7.16.4.

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    • ians
      Diamond Member

      • Apr 2010
      • 3943

      #17
      Originally posted by GCE
      Reg6.1.6 does not allow you to bridge the suppliers earth and neutral .

      The problem doing that is if there are other users without the bridge and the transformer star point is stolen your service cable could suddenly become the neutral earth point for the transformer.
      The current could be way past your cable size and cause a fire.
      It is the reason the municipalities and insurance companies insist on 4 pole change over switches


      6.1.6 The neutral conductor shall not be connected direct to earth or to the
      earth continuity conductor on the load side of the point of control except as
      allowed in 7.16.4.
      3.56
      point of control
      point at which a consumer can, on or in any premises, switch off the electrical
      installation from the electricity supplied from the point of supply


      The point of supply being the main DB ... because the meter box is not accessible to the consumer and the circuit breaker in the meter box only switches the phase or phases and not the neutral?

      What difference does it make it I do it in the meter or the council does it 3 metres away in the CDU ?

      Am I correct in saying they are creating a potentially dangerous situation?

      As Dave mentioned the installation is now a TN-C-S or TN-C

      Back to responsibilities ... If the council modify the supply in this manner should they not be responsible for clearly labelling the meter box ?
      Comments are based on opinion...not always facts....that's why people use an alias.

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