Earthing gas to water, no easy access....

[Satanskull]

Hi, 1st Post!
I have moved a CU in an old ish house, earthing arrangement for the gas is ok(external), but I cant get a path to the water (floor tiles all over etc), can I connect to the gas pipe, go externally round the house and go through the wall to the water stopcock, or does it have to be a continuous loop? Thank you.

 

[Deleted member 9648]

BGB.

Main bonding must be as near as 'Practicable' to point of entry, so to my mind it would be OK to bond water, where you can get at it, if you genuinely can't get to the point of entry (Within 600mm), regs say it must be bonded internally not in the external box.

If you were going to do that you would need to confirm good continuity back to the point of entry,if continuity was broken there may be an un-bonded ECP as a result....defeating the object of the excercise.

 

[telectrix]

guarantee if there was good continuity, along comes mr, plumber and fits a plastic tee to tap off for a shower.

 

[Deleted member 9648]

guarantee if there was good continuity, along comes mr, plumber and fits a plastic tee to tap off for a shower.

Which is why it should be at the point of entry!!

 

[Knobhead]

OK you ensure continuity on the day of testing. Joe the plumber will f… up everything the day after. You have to take “practicality” in it’s literal sense.

View attachment 12939

If only we could foresee the future!

 

[Knobhead]

Have a look at http://www.electriciansforums.net/e...al-regulations/46129-just-start-argument.html

 

[ExArmy]

BGB.

Main bonding must be as near as 'Practicable' to point of entry, so to my mind it would be OK to bond water, where you can get at it, if you genuinely can't get to the point of entry (Within 600mm), regs say it must be bonded internally not in the external box.

does the clamp have to be accessible? heres the scenario: the main incoming gas comes into the kitchen just above DPC height and runs straight up the wall and comes out in the airing cupboard directly above on the first floor. in the kitchen the area where the pipes are ran is a recess between the chimney breast and the corner wall and will be studded off, and then units fitted (base and wall) so if i bond gas as per the regs 600mm from point of entry it will be completely in-accessible unless the kitchen is ripped out, but if i do it in the airing cupboard below the boiler it will not be within 600mm from point of entry but it will be acessible.

 

[telectrix]

go for the airing cupboard. once it's boxed on in the kitchen, no chance of alteration to the pipework. note it on the cert.

edit: you could always bond in both places with continuous cable. then you will have complied with the 600mm , and have an accessible clamp, albeit not at the point of entry.

 

[Silly Sausage]

does the clamp have to be accessible? heres the scenario: the main incoming gas comes into the kitchen just above DPC height and runs straight up the wall and comes out in the airing cupboard directly above on the first floor. in the kitchen the area where the pipes are ran is a recess between the chimney breast and the corner wall and will be studded off, and then units fitted (base and wall) so if i bond gas as per the regs 600mm from point of entry it will be completely in-accessible unless the kitchen is ripped out, but if i do it in the airing cupboard below the boiler it will not be within 600mm from point of entry but it will be acessible.

It needs to accessible for testing/inspection.
As for point of entry, you could interpret that as where it comes out of the fabric of the building.
So in your case, bond it where ever it finally comes out of the wall/stud work etc.


and...

stick a note at the MET as to where the other ends are.
Otherwise, there'll be a thread started about I can't find the ends of the MBCs

 

[DurhamSparky]

just do what kitchen fitters do and bang an earth rod in the ground to bond water too.....

cant understand the theory!! copper pipe from underground bonded to a crap copper earth rod underground..!


lost for words