Upgrading to 400 amp service. Have already set my two grounding rods and ran #2 solid for them.
My question is about the water bonding.
Existing water bond was (to my understanding) done wrong...but not noticed on inspection. It was attached to a hose bib on the opposite side of the house (60') from where the pipe enters the ground. At the time the whole house was copper piping.
Piping now changes to pex just AFTER it enters the house, so I am assuming that it does actually still need bonded...
That being the case...What size wire for the 30' run from the panel to the closest qualifying bonding point?
Water main is metallic and will remain so.