I posted the bathroom stuff as the OP said about bonding baths etc in the post above, which made me think he is getting confused with supp. bonding.
I was under the impression he has a new water main rising into the extension which is why I questioned the main equipotential bonding and the issue.
I was under the impression he has a new water main rising into the extension which is why I questioned the main equipotential bonding and the issue.