Re: why ground an alarm panel.

[Mike Sokoly <secure15@xxxxxxxxxxxxx>]

Bill wrote:
> A cold water pipe ground might not be a good ground. Many times the pipe
> from the meter to the house is PVC.
>
> Also water meters located inside a basement may have rubber grommets which
> electrically isolate the inside piping from the outside piping. There
> *should* be a jumper ground wire from the outside pipe to the inside pipe in
> these cases. (But then the outside might be PVC after it leaves the building
> too.)
>
> New electrical service breaker panels might have two ground wires run for
> grounding. One to a cold water pipe ground, and the other to two ground rods
> spaced 6 ft. apart.
>
> I would run a ground wire to one of these ground rods.
>
> Bill, Well intended but i do believe NFPA 70 (National Electrical Code)
         does not permit you to "share" others' ground rods.
         When in doubt- drive your own ground rod.
         Note: Telco and cable TV Co.s USED to drive their own rods!