I wonder I anyone can give me some advise on bathroom supplementary
bonding.

I have recently replaced my bathroom suit and understand that I need
to install supplementary bonding. I intend to bond the hot, cold and
heating pipes together in the loft where they enter the bathroom
rather than stringing bonding wire all around the bathroom. I
understand that the regs allow the bonding to be provided in close
proximity to the bathroom location. Is that right?

I have seen many posts about supplementary bonding to lighting in the
bathroom and I am still a bit unclear as to what the requirement is
here. As I understand it the supplementary bonding from the pipes also
has to be connected to the earth points of the junction boxes to which
the lights are connected. Is this correct? It would seem to me that if
you do this then you are in effect connecting the supplementary wiring
system in the bathroom to the house wiring earth which, I have read,
you should not do.

Any clarification here would be greatly appreciated.

Robert

wrote:

I have recently replaced my bathroom suit and understand that I need
to install supplementary bonding. I intend to bond the hot, cold and
heating pipes together in the loft where they enter the bathroom
rather than stringing bonding wire all around the bathroom. I
understand that the regs allow the bonding to be provided in close
proximity to the bathroom location. Is that right?

Yup.

I have seen many posts about supplementary bonding to lighting in the
bathroom and I am still a bit unclear as to what the requirement is
here. As I understand it the supplementary bonding from the pipes also
has to be connected to the earth points of the junction boxes to which
the lights are connected. Is this correct? It would seem to me that if

You want a connection to the CPC (i.e. earth) of any circuit that
supplies power to the room. Since you are making connections in the loft
a connection to the light switch or ceiling rose ought to be easy.

you do this then you are in effect connecting the supplementary wiring
system in the bathroom to the house wiring earth which, I have read,
you should not do.

Not so much "should not do". as "there is no requirement to do". What
you are trying to do is create an equipotential zone within the
bathroom, so that anything that can introduce a potential into the zone
is bonded together. That way you are not able to touch any combination
of things at a significantly different potential.



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On 13 Oct, 01:05, John Rumm wrote:
wrote:
I have recently replaced mybathroomsuit and understand that I need
to installsupplementarybonding. I intend to bond the hot, cold and
heating pipes together in the loft where they enter thebathroom
rather than stringingbondingwire all around thebathroom. I
understand that the regs allow thebondingto be provided in close
proximity to thebathroomlocation. Is that right?

Yup.

I have seen many posts aboutsupplementarybondingto lighting in the
bathroomand I am still a bit unclear as to what the requirement is
here. As I understand it thesupplementarybondingfrom the pipes also
has to be connected to the earth points of the junction boxes to which
the lights are connected. Is this correct? It would seem to me that if

You want a connection to the CPC (i.e. earth) of any circuit that
supplies power to the room. Since you are making connections in the loft
a connection to the light switch or ceiling rose ought to be easy.

you do this then you are in effect connecting thesupplementarywiring
system in thebathroomto the house wiring earth which, I have read,
you should not do.

Not so much "should not do". as "there is no requirement to do". What
you are trying to do is create an equipotential zone within thebathroom, so that anything that can introduce a potential into the zone
is bonded together. That way you are not able to touch any combination
of things at a significantly different potential.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Thanks for your reply John. I have wired up the bathroom supplementary
bonding including the earth point for the bathroom light as you
suggested. Checking it all out with a meter it's OK. I don't think I
will be asking building control to certificate the job as they want 50
quid plus but at least I know it's safe.

Robert