What's he on about

[jmtisme]

Was working with a heating engineer when I started cross bonding the pipework he laughed and said I should check the regs as cross bonding is no longer required. I looked at him then said something about British gas and water pipes not sure what his point was can anyone enlighten me??

 

[acat]

He might be thinking of supplementy bonding and RCD protection


Chris

 

[m4tty]

If the cct is covered by rcd and disconnection times are met and another condition in the brb then supp bonding can be omitted

 

[ezzzekiel]

but does not need to be ommited tell him to fo and mind his own biz

 

[steamboatwilly]

but does not need to be ommited tell him to fo and mind his own biz

Yes, quite!

 

[jmtisme]

Thanks guys it's a case of someone thinking they know it all

 

[Deleted member 9648]

Were the pipes in a bathroom or other special location?

 

[jmtisme]

No they were in a boiler house in the basement

 

[Deleted member 9648]

In that case the heating engineer is correct,there is no requirement in the BRB to supplementary bond heating pipes unless they are entering a special location and the 3 requirements to omit are not met.
Main bonding to heating pipes would only be required if they are extraneous conductive parts....

 

[jmtisme]

The installation is not protected by RCD so I think bonding is required ?

 

[ezzzekiel]

main bonding is always req supp bonding ommited under certain circumstances, if no rcd then yes supp bonds shall need to be in place

 

[Deleted member 9648]

The installation is not protected by RCD so I think bonding is required ?

You said the pipework boiler is in a basement....supplementary bonding is only required in special locations as defined in the BRB.....There is no requirement for supplementary bonding/cross bonding in other locations regardless of RCD protection.

I'm going to be blunt here, I never cease to be staggered by the number of electricians on this forum and elsewhere who do not understand the requirements for bonding,it's such a simple concept yet results in more confusion and incorrect statements than any other subject.

 

[ezzzekiel]

Supplementary equipotential bonding is required in some locations and installations of bs7671 (PART 7 SPECIAL LOCATIONS)
if the installation meets the requirements for earthing and MAIN bonding there is no specific requirement for supp bonding of:
kitchen pipes/ sinks, boiler pipework, metallic pipes to wash basins, locations containing a bath or shower.


just read later post, bonds not in special location
However there is nothing wrong with providing supp bonding anywhere (although not a bs7671 requirement) so you could say you prefer to cross bond anyways and still tell him where to go, although i wouldnt advise getting into an argument if you dont fully understand what regs actually state.