tony sayer wrote:
In article
.com,
Owain scribeth thus
On Sep 1, 11:25 am, "David WE Roberts" wrote:
So earth at the CU should be bonded to the gas pipe as close to
the entry into the property as possible (by the meter which is on
the outside wall).

Yes.

Electrics around the combi should be bonded to the copper gas
pipe.

No. The electrics are earthed by the circuit protective conductor to
the main earth terminal, and the gas pipe is bonded to the main
earth terminal. The boiler, if it requires earthing, will be
earthed by the circuit protective conductor.

Oh, and the gas hob should be bonded to the gas pipe as well.

No.

Probably anything electrical in theoretical touching distance of
a gas pipe (or the hob?) in the kitchen.

No.

Is there anything else that should be bonded?

No, according to 17th Edition.

If your bathroom wiring is to 16th Edition (i.e. not all circuits
are RCD) then you may need to equipotentially bond for the bathroom.




And the regulations are different for council houses. For council
houses it's compulsory to earth everything (including the individual
hot and cold taps). :-)


Umm ... why?..

I can only speak for the 16th edition and Doncaster council. They completely
ignored the 16th edition rules and bonded everything. As I am no no longer
allowed to work for them I have no idea what they do with the 17th edition
rules.

Barnsley council seem to follow the 17th edition.

--
Adam