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Posted by Eigenvector on December 22, 2006, 5:49 pm
>>Grandpa wrote:
>>>
>>> Question - in all that talk about using water pipes for grounding,
>>> someone mentioned bonding the water heater inlet and outlet pipes
>>> together. If you're 100% PEX from the water meter, would that be
>>> necessary?
>>
>>No, you don't use water pipes for grounding, you ground the water pipes. A
>>subtle, but important difference.
>>
>>
>
> In an older house it is possible that the water pipes were used for
> the ground and that the pipes are in fact still the one and only
> ground on the premises. If that is the case it will be necessary to
> install a code-approved ground when replacing the pipes
>
>
> --
> Make it as simple as possible, but no simpler.
>
> Larry Wasserman - Baltimore Maryland - lwasserm@charm.net
Yes pay attention to that. There are lots of houses with plenty of gotchas
like that, espcially ones built in the 50's and 60's where grounding was
first becoming standard and desirable. My house was a virtual deathtrap of
grounds to water pipes - when the actual grounding was installed every and
all grounds unaccounted for were clipped by the electrican so as to rule out
fault loops and shock hazards.
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