It's been common practice to anytime a copper water pipe is near to use=20
it as a ground. Therefore, all the copper pipe is tied together, used to=20
be the water service pipe (to street) and meter were copper. brass,=20
etc., and it was used as the ground rod, but with the advent of=20
plastics, generally it's good practice to put a #4 copper wire across=20
the meter if both sides are copper. But with all the plastic tubing and=20
accessories it's hard to say what's proper.

My power company required the meter ground and at the service=20
disconnect, since I don't have a ground wire between the two. All I have=20
between the meter and service disconnect is 2 hot 220 volt and a neutral=20
in plastic conduit, which is all the bring from the pole. The ground at=20
the meter, and service disconnect serves protection if a hot would=20
energize  something that's connected (grounded) by either opening the=20
pole fuse or one of the house breakers. This is in Northern Ohio, USA.=20
My 12.5kw standby generator is grounded back to the service disconnect=20
panel to the house ground rod.

Our 220 volt service is the only one on the pole transformer to 12.5KV=20
?? with a fuse to one hot wire and a ground wire that is grounded at=20
every pole.
On 7/11/2014 6:36 PM, Robert Dvoracek wrote:
>> Sure about that? I don't have my NFPA book here, but when I wired my hou=
se some 12 years ago, I was required to use a grounding rod next to my mete=
r/main and then another ground bond wire back to my copper water pipe, unde=
r the PRV. Yeah I remember that one because the inspector made me wrap gree=
n tap around the black wire to indicate its ground.
> While I cannot attest to the national electrical code, as I am not an ele=
ctrician, they have been tied together in every breaker panel I have ever h=
ad the cover off of.
>

--=20
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