Supplies bonding...

yes you can carry on the bond to the water from the gas bond.

 

The bonding conductor needs to be in one length, ie not two lengths, but looped though the BS951 clamp on the gas.
Its done like that so if some muppet takes off the gas bond, the connection to the water is maintained.

 

Yes you can, what has not been mentioned is that the earth cable must be continuous, that means the earth wire must not be cut until it reaches the furthest point, you need strip the insulation away at the mid point and not cut the copper conductor then bind it to the bonding point and so on. The earth cable must be one entire piece from CU to end point, NOT CU to gas bond then cut and a new piece connected heading off to water pipe bond

 

Ha, me first!!

 

https://www.tlc-direct.co.uk/Products/EC16.html

I find the above are excellent..posted is suitable for the 22mm gas, and also water which might be 15mm ct (maybe from leadlock) or could in rare instances be barrel (buy clamp for pipe size and use heavy duty)

As said dont cut the cable at gas position - rather strip insulation carefully and loop copper, squeeze the loop and push into clamp and tighten both screws down on the plate.

A cursory continuity test from met to gas and water position is indicated, and the reading should be 0.05 ohms or less..the pipe itself is where the probe/croc on wander lead will be connected/probed..not straight on the clamps

 

There is no regulation stating the bond has to be continues but of course its regarded as best practise.

 

It's typical practice in this case to disconnect the existing bonding conductor, through crimp it to the new length, and then strip an inch of insulation, fold the conductor back on itself and connect to the clamp. The cable is then continuous past the first clamp.

 

On a related matter our gas meter is being moved outside as part of an general area upgrade of the supply pipes from lead and iron or steel to yellow plastic. The gas meter will be about 10 meters from the earthing point near the CU.
Is 10mm sq cable still OK for this distance?

 

Yes 10mm is fine.

 

Agree with Lee, this "continuous length" business is a common misconception, there's nothing in the regs. that states it.

 

Thank you very much.

 

That may be, but you'll fail an assessment with NICEIC if it is not continuous. Happened to my buddy.

 

I would of contested it until the cows come home!

 

Pretty sure it is in the GN, but not the actual regs. NIC are hot on this contentious issue!

 

Yeah its in guidance note 8.

 

The thing is you couldn't code it on an EICR so how the NICEIC can fail someone on their assessment for it is beyond me.

 

Because the niceic think they are the law and invented electricity

 

Why would it need bonding?