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AAaaahhhhh. The Bonding Question Again.

Zoomup
Do we main bond up an installation if a new gas boiler is to be installed when the old one is removed?


What are extraneous-conductive-parts, and what are not?


Now, to put a spanner into the works, do any issues arise if the copper pipes are "bonded" with solderless copper bonding?


Otto von Guericke would have known this for sure.


Over to you?


Look......




Z.


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    O.K. Hands up who bonds earthy extraneous-conductive metal radiator pipes at each location where they emerge from the ground  floor, say from concrete or from under quarry tiles? 



    I'd want to be convinced that it was effectively bonded (if really extraneous - modern concrete floors should have a plastic DPM underneath them) - I'd probably consider that being buried in an internal solid floor would be sufficient precaution against the joints being modified (e.g. being replaced by plastic or glue) so if there was continiuity now, I'd be happy just bonding one end (e.g. where it goes down into the floor near the boiler) rather than where it emerges at each of the radiators. Joints accessible 'above ground' I wouldn't want to rely on. Yes I have bonded CH pipework for that reason - even though it didn't exter/exit the premises.


    Judging by the bonding in a utility room I saw the other day, where the same lead water supply pipe was bonded in both places it emerged though the floor, others (at least one) seem to think similarly too.


      - Andy.
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  • 0

    O.K. Hands up who bonds earthy extraneous-conductive metal radiator pipes at each location where they emerge from the ground  floor, say from concrete or from under quarry tiles? 



    I'd want to be convinced that it was effectively bonded (if really extraneous - modern concrete floors should have a plastic DPM underneath them) - I'd probably consider that being buried in an internal solid floor would be sufficient precaution against the joints being modified (e.g. being replaced by plastic or glue) so if there was continiuity now, I'd be happy just bonding one end (e.g. where it goes down into the floor near the boiler) rather than where it emerges at each of the radiators. Joints accessible 'above ground' I wouldn't want to rely on. Yes I have bonded CH pipework for that reason - even though it didn't exter/exit the premises.


    Judging by the bonding in a utility room I saw the other day, where the same lead water supply pipe was bonded in both places it emerged though the floor, others (at least one) seem to think similarly too.


      - Andy.
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