The electrical ground is the rebar in the foundation.
Grounding electrical panel to water pipe.
All of the following 7 electrodes that are present at a building shall be bonded together to form the entire grounding system.
Primary connection to the water pipe must be on the street side of the water meter primary connection to the water pipe shall be within 5 ft of the point of entrance to the building the nec requires that water pipes be bonded to ground even if these metal pipes are not used as part of the grounding system.
The wires that bond your metal piping are preventative and they only become important in the unlikely event that an electrical conductor energizes the pipe.
The grounding wire that runs from your electrical panel to grounding electrode helps even out voltage increases that often occur because of lightning and other causes.
A premise s electrical service shall be connected to a grounding electrode system consisting of a metal underground water pipe in direct contact with earth for 10 feet or more if available on the premises and a supplemental electrode a rod pipe or plate electrode.
Single grounding electrode to perform its function over the life of an electrical installation.
Section 250 104 b would permit the equipment grounding conductor for the electrical circuit that may energize the metal water pipe stub to serve as the bonding means.
Bonding is a non corrosive grounding wire that runs from a metal plumbing pipe back to the metal box of the home s main electrical panel to the wire that leads to a grounding rod outside the.
The copper plumbing is properly bonded to the main electrical ground at the electrical panel.
Have your electrician use a clamp on amperage meter to measure the current on the water pipe grounding electrode conductor gec and onto the copper pipe itself if the clamp will go around the.