Grounding wire from panel to gas pipe??? - alt.home.repair

Message from discussion Grounding wire from panel to gas pipe???
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Date: Wed, 09 Aug 2006 00:44:46 -0500
From: Bud-- <remove.BudN...@isp.com>
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Subject: Re: Grounding wire from panel to gas pipe???
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Doug Miller wrote:
> In article <9f66a$44d7667d$4213ea86$15...@DIALUPUSA.NET>, Bud-- <remove.BudN...@isp.com> wrote:
> 
>>Doug Miller wrote:
>>
>>
>>>In article <22cab$44d6791d$4213ea37$9...@DIALUPUSA.NET>, Bud--
>>
>><remove.BudN...@isp.com> wrote:
>>
>>>>Assume underground metal water service pipe (10ft...) and a ground rod.
>>>>
>>>>Your original statement was:
>>>>
>>>>
>>>>
>>>>>Metal water piping is bonded to the electrical system grounding
>>>>>electrodes to ensure that the metal water piping cannot become live,
>>>>>*not* to provide a ground for the electrical system
>>>
>>>
>>>Yep. And that's correct.
>>>
>>>The water pipe -- by itself -- is not permitted by Code to be used to ground 
>>>the electrical system, and hasn't been for many years.
>>>
>>
>>2005 NEC 250.50 "All grounding electrodes as described in 250.52(A)(1) 
>>through (A)(6) shall be bonded together to to form the grounding 
>>electrode system."
>>
>>250.52(A)(1) "Metal Underground Water Pipe. A metal underground water 
>>pipe indirect contact with the earth for 3.0 m (10 ft) or more...."
>>
>>100(1) [definitions] "Grounding Electrode. A device that establishes an 
>>electrical connection to the earth."
>>
>>If you are having trouble intrepreting: All grounding electrodes 
>>including Metal Underground Water Pipe shall be bonded together to to 
>>form the grounding electrode system that establishes an electrical 
>>connection to the earth.
>>
>>What do you think it means?
>>
>>Can you read?
> 
> 
> You're the one who has trouble reading, not me. I never said that metal water 
> pipes shouldn't be part of the grounding electrode system -- I said that metal 
> water pipes are not permitted to be the *only* grounding electrode, and that's 
> a fact.
> 

Your fact is not consistent with what you said:
“The electrical system has its own, *separate* grounding electrode. 
Metal water piping is bonded to the electrical system grounding 
electrodes to ensure that the metal water piping cannot become live, 
*not* to provide a ground for the electrical system.”

I do not see how "*not* to provide a ground for the electrical system" 
can be read other than the water pipe is not to be a grounding electrode 
and the system grounding is provided by the system's "own, *separate* 
grounding electrode."

bud--