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#84520 - 04/07/03 07:03 PM service grounding/bonding  
ccdave  Offline
Joined: Jan 2003
Posts: 59
culver city,calif. usa
Up comes another-
where does it say that a ground rod right beside a cold water bond on the water supply cancels the 2 seperate ground issues? I thought I had it right before.......

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#84521 - 04/07/03 07:09 PM Re: service grounding/bonding  
HotLine1  Offline

Joined: Apr 2002
Posts: 6,803
Brick, NJ USA
Could you be a little more specific please.
The "issue" with 2 ground rods is 250-56 ('99 NEC); unless testing & documentation that 1 rod is 25 ohms or less.

What's the rod have to do with the water pipe, before the meter??


#84522 - 04/07/03 07:48 PM Re: service grounding/bonding  
ccdave  Offline
Joined: Jan 2003
Posts: 59
culver city,calif. usa
I have contractor that is insisting that the rod beside the water pipe is wrong.That it should be by the panel in back and the water bond goes to the front where the supply comes in within 5ft.

#84523 - 04/07/03 08:06 PM Re: service grounding/bonding  
spyder  Offline
Joined: Oct 2002
Posts: 210
The water bond and using the water pipe as a grounding electrode are two different issues. If your able to use the water pipe as a grounding electrode, then yes the connection is required to be within 5ft of where it enters the building and it must be supplemented with at least one additional ground rod. The 5 ft rule is good practice even if the cold water is not used as a gronding electrode. This way if a water pipe is cut or removed you do not lose your water bond and possibly grounding electrode.

#84524 - 04/11/03 11:39 AM Re: service grounding/bonding  
nesparky  Offline
Joined: Jun 2001
Posts: 642
As spyder said the ground rod and the water pipe are seperate issues. There is no requirement on where you locate the ground rod as long as it is installed correctly wired correctly and in a suitable location. It could be by the panel and usually is around here.
Where the water pipe comes in is a different subject.


#84525 - 04/14/03 10:11 AM Re: service grounding/bonding  
ccdave  Offline
Joined: Jan 2003
Posts: 59
culver city,calif. usa
Actually after talking to him again he is saying that you cannot put the grd rod beside the water pipe, it must be by the panel sereratly?

#84526 - 04/14/03 10:42 AM Re: service grounding/bonding  
resqcapt19  Offline
Joined: Nov 2000
Posts: 2,148
The code does not specify the location of the ground rod. There is no reason either from an electrical standpoint or a code standpoint that a rod cannot be installed next to the metal water pipe.


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