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Bonding.......again

Former Community Member
Former Community Member
Hi,


I have recently carried out an EICR on a property which probably had been victim to the Bathroom fitter. It previously has an electric shower which had been removed along with new fixtures and fittings including light and fan. They have left in a supplementary bond from the pull cord to one of the incoming pipes from the heating to the towel radiator.

Now then - My proposal, as there is no supplementary bonding (other than the pullcord to radiator), is to move the lighting circuit for the bathroom (upstairs) onto the RCD side of the CU as the Ze for the circuit complies and the Main Protective Equi Bonding is in place. I have measured low ohms between all pipework and it is 0.02 or lower. This is a more suitable solution than running a 4mm to every point.


My question is what do I do with the bond from the switch to the heating pipe? Do I leave it in or disconnect it. 


Many thanks for your time.


Chris
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  • 0
    AJJewsbury:
    So, if the two items mentioned are not exposed-conductive-parts they need no bonding.

    That may be true of the general principle of supplementary bonding (415.2) but in bathrooms the requirement is extended to include the c.p.c. supplying Class II (double insulated) equipment (701.415.2) - no doubt to guard against DIYs replacing fittings with class I ones (in alignment with 412.2.3.2).


    Presuming supplementary bonding is required of course.


       - Andy.

      -


    And we must not forget that a flex C.P.C. can be used as a supplementary bonding conductor for a fixed appliance,  say to a heated towel rail or wall heater.


    544.2.5


    Z.

     


Reply
  • 0
    AJJewsbury:
    So, if the two items mentioned are not exposed-conductive-parts they need no bonding.

    That may be true of the general principle of supplementary bonding (415.2) but in bathrooms the requirement is extended to include the c.p.c. supplying Class II (double insulated) equipment (701.415.2) - no doubt to guard against DIYs replacing fittings with class I ones (in alignment with 412.2.3.2).


    Presuming supplementary bonding is required of course.


       - Andy.

      -


    And we must not forget that a flex C.P.C. can be used as a supplementary bonding conductor for a fixed appliance,  say to a heated towel rail or wall heater.


    544.2.5


    Z.

     


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