Originally posted by resqcapt19:
[b]<I say that if you drive two rods 6' apart outside and bond to them, you don't have to
count the water main as an electrode requiring #4 copper. Indoor plumbing must be bonded, e.g., metal pipes, tanks, control boxes, and pumps.>
DS
Ground rods are considered supplemental, because of the fact that we are losing our waterline. In my area all new installations of water service is plastic and interior water piping systems have to be bonded. Also if there is a well on the premises,I live in a very rural area and there are plenty of wells, we drive two ground rods and bond to any interior water lines and jumper any that have plastic pipe inserted between them. In the county just south of me, they are required to bond to the well head and drive two ground rods. Everything is local I guess.
The interior metal water piping system must be bonded with a conductor sized per Table 250-66. See 250-104(a)(1)
Don[/B]
