Earth bonding of gas and water

stragglebod

My flat currently doesn't have earth bonding to the gas or water.

It should be pretty easy to get to the water pipe from the consumer unit. It'll be difficult to get to gas pipe from the consumer unit, and easy to get to the gas pipe from the water pipe.

Does the bonding have to be electricity to gas plus electricity to water? Or can it be electricity to water and water to gas?

Obviously I'll have it done by a proper sparky, I just want to make sure no-one sees it as an opportunity to charge for some unneccessary plastering

Thanks.

Risteard

No such thing as Earth bonding. Earthing and bonding serve very different purposes.

stragglebod

'Bonding' was the phrase the electrician who did the safety check used.


I thought that was the same as earthing but apparantly not.

EssexExile

Risteard wrote: »

No such thing as Earth bonding. Earthing and bonding serve very different purposes.

That was helpful.

Owain_Moneysaver

stragglebod wrote: »

Or can it be electricity to water and water to gas?

Yes, but the wire must be carried through the water pipe clamp and on to the gas pipe clamp. It must not be cut and joined at the water pipe. i.e. disconnection of the conductor from one extraneous-conductive-part must not interfere with or endanger the security of the bonding of the other part.

Under 18th Edition Regulations,

Metallic pipes entering the building having an insulating section at their point of entry need not be connected to the protective equipotential bonding (Regulation 411.3.1.2).

stragglebod

Thank you @Owain Moneysaver - that suggest the answer's no to me - since disconnecting the bond to the water pipe would mean the gas pipe is bonded to the water pipe but neither would be bonded back to the consumer unit.

Alex1983

EssexExile wrote: »

That was helpful.

He always is helpful.

Owain_Moneysaver

stragglebod wrote: »

Thank you @Owain Moneysaver - that suggest the answer's no to me - since disconnecting the bond to the water pipe would mean the gas pipe is bonded to the water pipe but neither would be bonded back to the consumer unit.

No, the opposite is the case.

The wire must be run continuously through the water pipe clamp so that even if the water pipe clamp is removed the wire is still continuous to the gas pipe.

The continuous wire is looped round the screw beneath the washer on the clamp

https://www.toolstation.com/earth-clamp-12-32mm/p88231

the design of the clamp terminal allows the wire to be connected or disconnected without cutting the wire

southcoastrgi

The world & his wife call it earth bonding

Risteard

southcoastrgi wrote: »

The world & his wife call it earth bonding

Electrically competent people don't, so your point is null and void. As a gas plumber you aren't qualified to advise on electrical matters.

Hermione_Granger

EssexExile wrote: »

That was helpful.

Risteard is without a doubt, the most helpful poster on this forum. (well, in his own mind).

https://forums.moneysavingexpert.com/showpost.php?p=75418167&postcount=11

Risteard

I would state without fear of contradiction that I am probably the most helpful user on this forum.

NowI don't know about the most helpful, but in my opinion, I would certainly say the most arrogant.
Risteard, being helpful doesn't just mean being knowledgeable. It also means being able to pass that knowledge on to others in a way that they can or will accept, something that you with your superior, self righteous attitude simply can't manage.