Junctions in main bonding?

[brman]

I was taught that the main bonding should be continuous, including from the water to gas for example. However I am struggling to find a reg that states that. Can anyone point me in the right direction?

I ask because I have an installation where the gas isn't bonded, despite being only 2 feet from the water (which is bonded). So the bonding needs extending to the water.
It also has a junction in the back of the airing cupboard where it looks like some supplementary bonding has been joined in.

I am not too keen on replacing the 10m of 10mm back to the CU for the sake of it but will if it is deemed necessary. Is there actually a reg that says I need to?

I do need to get this one right as it is going to be assessed by elecsa in a couple of weeks time.....

 

[Octopus]

If I remember correctly its not stated in BS7671 and is "advisable". GN3 somewhere if my memory serves me correctly.

 

[brman]

Thanks Murdoch.

I've just been doing some more searching and found a big long thread here on the subject. It does appear it isn't a reg (or at least only a very tenuous interpretation of one!) but is in GN8.

As this is for my assessment I might just spend the extra on it

 

[ringer]

Scrap prices are quite high at the moment. It might not end up costing you quite as much as you thought.

 

[sjm]

IMHO you can "repair" the cable at the junction by through crimping and heatshrinking over the join, the supplementary bonding is only required to link earth terminals and extraneous conductive parts locally so doesn't need to be taken back to the CU. I would then apply the same logic and "repair" the cable in order to extend it to include enough cable to bond the gas and water together.

 

[telectrix]

beaten to it by sjm. if you through crimp the existing 10mm bonding cable with a "permanent" joint, it's then continuous. take it off the water, crimp on a piece long enough to reach the gas and without breaking carry on to te water.

 

[brman]

Thanks guys, strangely enough that is exactly what I did today. Except I soldered rather than crimped.

I managed to pull through enough to get the bonding to reach the gas so that didn't need extending so I ended up just replacing a short run to the eves (it was undersize) and removing the supplimentary bonding that joined to it as it did not appear to connect to anything. Not really a surprise as all the plumbing in the bathroom is plastic so I suspect the bonding was just left connected one end when that was done.

Anyway, job done

 

[Knobhead]

Solder, I usually get shouted down for suggesting it mg_smile:

 

[brman]

Solder, I usually get shouted down for suggesting it mg_smile:

I wondered if anyone would comment on that

 

[telectrix]

nothing wrong with solder. without it there would be no computers, no internet, no television. ahhh.... sod the guy who invented solder

 

[brman]

I tell you what though, as much as I like soldering things, it would have been a lot quicker to crimp it and I wouldn't have singed my eyebrows when I set some cobwebs alight :lol: