Tricky Bonding

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Does Water incoming have to be bonded if pipes from it are plastic? What about if further up the line the go back to copper? Problem is the stop cock comes under floor which is tiled and into wall which is tiled, with only the turny bit sticking out. Would the tiles have to be taken off and half the wall knocked out to get a earth strap on it?
 
If both the customer and water suppliers pipes are all plastic / PVC there isn't a need to bond.

If the incoming section is metal- copper or lead then that should be bonded. If you have a section thats metal from the supplier side and you have a section beyond the stop cock that is also metal both should be bonded.

10mm earth, one run but terminated at the two metal points. The mid termination between MET and final termination should be unbroken (so just strip back a loop to go under the earth strap.

Pretty sure that's the way to do it- anyone want to argue :D
 
new to the game raises an interesting point here, as all exposed metallic parts have to be bonded(or is that just supplementary bonding), then surely that would apply to a metal stop cock even if the pipes are plastic, so getting a reliable bond onto a stop cock would be difficult especially if as he says it is part buried into the wall(don't know if that is against any plumbing regs or not).
 
Does a metal stop tap with plastic pipework on either side have sufficient insulation caused by the plastic pipework as to not be an extraneous conductive part?
 
Chri5 said:
If the incoming section is metal- copper or lead then that should be bonded.

As electricians, we are not interested in bonding the service pipe - that which comes from the street up to the consumer's 'cock.

We are only interested in fitting MEB to the pipe from the stopcock to the consumer's installation.
 
securespark said:
Chri5 said:
If the incoming section is metal- copper or lead then that should be bonded.

As electricians, we are not interested in bonding the service pipe - that which comes from the street up to the consumer's 'cock.

We are only interested in fitting MEB to the pipe from the stopcock to the consumer's installation.

So if its plastic pipes directly after the cock then it dosnt need bonding right? But what about if further up the chain it goes back to copper, should a 10mm earth be connected, as i cant see it becoming extraneous
 

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