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Ground wire to water pipes Eigenvector 09-30-2006
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Posted by Eigenvector on September 30, 2006, 1:45 pm
Now that I've had proper grounding installed in my breaker box, and have had
my hot, cold, and gas pipes bonded to that ground, should I remove the cold
water grounds that the previous owner installed? I didn't think to ask the
electrician while he was here, however as I got into the shower I was
wondering if it should be done.

I know the previous owner installed a ground wire from the kitchen outlet
grounds to the cold water pipe below - should that be clipped and removed
before I use that outlet? He had also originally installed a ground wire
from the washing machine to the cold water tap, so I know there are a few of
those around.



Plumbing 468x60
Posted by HeyBub on September 30, 2006, 2:55 pm
Eigenvector wrote:
> Now that I've had proper grounding installed in my breaker box, and
> have had my hot, cold, and gas pipes bonded to that ground, should I
> remove the cold water grounds that the previous owner installed? I
> didn't think to ask the electrician while he was here, however as I
> got into the shower I was wondering if it should be done.
>
> I know the previous owner installed a ground wire from the kitchen
> outlet grounds to the cold water pipe below - should that be clipped
> and removed before I use that outlet? He had also originally
> installed a ground wire from the washing machine to the cold water
> tap, so I know there are a few of those around.

Doesn't matter. Probably. Good is redundancy is good.



Posted by glenn P on September 30, 2006, 10:01 pm
"Ground redundancy" actually isn't always so good as you may think.

What is called a ground loop can be anything from an annoying problem to
costing the owners dollars to find & fix to something that may be dangerous
to certain appliances.

> Eigenvector wrote:
>> Now that I've had proper grounding installed in my breaker box, and
>> have had my hot, cold, and gas pipes bonded to that ground, should I
>> remove the cold water grounds that the previous owner installed? I
>> didn't think to ask the electrician while he was here, however as I
>> got into the shower I was wondering if it should be done.
>>
>> I know the previous owner installed a ground wire from the kitchen
>> outlet grounds to the cold water pipe below - should that be clipped
>> and removed before I use that outlet? He had also originally
>> installed a ground wire from the washing machine to the cold water
>> tap, so I know there are a few of those around.
>
> Doesn't matter. Probably. Good is redundancy is good.
>



Posted by Tom The Great on September 30, 2006, 3:19 pm
On Sat, 30 Sep 2006 10:45:48 -0700, "Eigenvector"

>Now that I've had proper grounding installed in my breaker box, and have had
>my hot, cold, and gas pipes bonded to that ground, should I remove the cold
>water grounds that the previous owner installed? I didn't think to ask the
>electrician while he was here, however as I got into the shower I was
>wondering if it should be done.
>
>I know the previous owner installed a ground wire from the kitchen outlet
>grounds to the cold water pipe below - should that be clipped and removed
>before I use that outlet? He had also originally installed a ground wire
>from the washing machine to the cold water tap, so I know there are a few of
>those around.
>


For residental purposes, current NEC doesn't seem to allow such a
ground method. You might want to have someone look at it.

later,


tom

Posted by Eigenvector on September 30, 2006, 4:53 pm

> On Sat, 30 Sep 2006 10:45:48 -0700, "Eigenvector"
>
>>Now that I've had proper grounding installed in my breaker box, and have
>>had
>>my hot, cold, and gas pipes bonded to that ground, should I remove the
>>cold
>>water grounds that the previous owner installed? I didn't think to ask
>>the
>>electrician while he was here, however as I got into the shower I was
>>wondering if it should be done.
>>
>>I know the previous owner installed a ground wire from the kitchen outlet
>>grounds to the cold water pipe below - should that be clipped and removed
>>before I use that outlet? He had also originally installed a ground wire
>>from the washing machine to the cold water tap, so I know there are a few
>>of
>>those around.
>>
>
>
> For residental purposes, current NEC doesn't seem to allow such a
> ground method. You might want to have someone look at it.
>
> later,
>
>
> tom

I'll remove it when I replace the Romex. It doesn't sound dangerous so I
won't worry, but I will correct it when the wiring is replaced. The
previous owner clipped all the ground wires in the Romex, so I have to
replace it in order to get grounded service at that fixture.



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