John Ferrell wrote:
On Tue, 2 Jan 2007 00:33:03 -0500, "Jimmie D"
wrote:



Very common for local code to overide this and for good reason. You never
know when a piece of metal pipe is going to be replaced with plastic so a
ground rod has to be used with the electrical service.The plumber dont know
it is being used as a ground. and the electrician doesnt know all the metal
pipe has been replaced with PVC.Ground rods are cheap and easy to install.

Jimmie

There was a time when the expression "water pipe ground" was common.

Extra ground rods actually contribute to the risk unless the are tied
together with at least #6 wire. (NEC) Allowing the grounds to be
commoned through the power distribution will put appliances in the
loop with expensive results.

John Ferrell W8CCW


Yep, that why we use "grounding" and "bonding" and why work should be
done by a certified electrician. Grounding should be taken back to a
single point so you dont get loops running through expensive
appliances.

Jimmie