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#44589 - 11/08/04 03:49 PM Ground conductor  
Bert66  Offline
Member
Joined: Nov 2004
Posts: 80
Belle Chasse, La. USA
I have had this question asked several times and had just as many answers. When it is stated, that the ground conductor from the meter pan, to the distribution panel down to the ground rod and the water pipe be unbroken. Is it meant that it is physically not cut or that it has continuity from the ground rod to the meter pan. Help as it sometimes seems almost impossable to get a #4 copper from point A to point B without cutting it. Any suggestions on of others do it would be a BIG help.


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#44590 - 11/08/04 04:06 PM Re: Ground conductor  
go fetch  Offline
Junior Member
Joined: Oct 2004
Posts: 5
usa east coast
I feel that this way is fine and i install in this way; from the water pipe to the panal unbroken, then a seperate piece from the panal out to the ground rods unbroken. that is how i was taught and how i install and have not failed for such yet. Also jump water heater(s) and meter. hope that can be of help anyone else out there chime in.


#44591 - 11/08/04 05:06 PM Re: Ground conductor  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Hi Bert I am not sure what you mean here.

Quote
the ground conductor from the meter pan, to the distribution panel


Why would we run a ground conductor from the meter to the panel?

The section you are probably asking about is 250.64(C)

Quote
(C) Continuous. The grounding electrode conductor shall be installed in one continuous length without a splice or joint, unless spliced only by irreversible compression-type connectors listed for the purpose or by the exothermic welding process.

Exception: Sections of busbars shall be permitted to be connected together to form a grounding electrode conductor.


Here is a picture that shows what conductor is the Grounding Electrode Conductor and what conductors are bonding jumpers.


[Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#44592 - 11/08/04 05:42 PM Re: Ground conductor  
Bert66  Offline
Member
Joined: Nov 2004
Posts: 80
Belle Chasse, La. USA
iwire, you show in your picture from the ground rod/water pipe to the ground terminal strip (one piece of wire). Then a seperate wire from the ground terminal strip to a bonding ring at the hub where the service enters the panel. Would you not bring the wire through the nipple up to the meter pan (is it not reqired)? I have always brought it up into the meter and landed it under the screw next to the neutral. Did I miss something, could you please explain. As for (Continuous) I think that the exception here may clear up some confuseion.

Thanks Bert


#44593 - 11/08/04 07:22 PM Re: Ground conductor  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Bert, bringing a GEC from the Meter to the Main Panel, puts the the Grounding Electrode Conductor and the Grounded Conductor in parallel. If this is going to be done, you would need to be in compliance with 310.4, Conductors in Parallel.

Roger


#44594 - 11/08/04 07:23 PM Re: Ground conductor  
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
We don't generally bond to the "meter pan". The neutral is automatically bonded to the meter enclosure via the neutral lug. In those instances where the meter enclosure also contains the main disconnect, then we will terminate the GEC on the lug provided for that purpose in the side of the enclosure where the main disconnect is located.
The code does allow for the bonding of the GEC at any point from the weatherhead up to the enclosure containing the main disconnect. So the NEC does allow bonding the meter enclosure, but most utilities will not allow this practice, as it is poor practice to allow non-utility employees to cut the seals and remove the meter to inspect the GEC connection. The utility is very worried you are going to steal electricity from them.


Earl

#44595 - 11/08/04 07:31 PM Re: Ground conductor  
trekkie76  Offline
Member
Joined: Jun 2004
Posts: 220
baileyville, maine, usa
I land the #6 from the ground rods to the meter socket. Then I run whatever size GEC required to the water pipes, building steel,etc, and land that in the panel on the grounding bar. Never had the utility say anything about it yet. I have never run a grounding conductor from the meter to the panel
edited for bad typing [Linked Image].

[This message has been edited by trekkie76 (edited 11-08-2004).]


#44596 - 11/08/04 08:13 PM Re: Ground conductor  
Active 1  Offline
Member
Joined: Feb 2003
Posts: 687
Grayslake IL, USA
You would not be alowed to use a smaller #6 for the G rod if all grounds had to be continous. Every area is a bit different. Here a ground bonds the service pipe but never parallel with the nutral.

Tom


#44597 - 11/08/04 08:24 PM Re: Ground conductor  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Earl, why would we cut a seal to inspect the GEC connection anymore than we would cut the seal to inspect the other connections we made in the meter?

These connections do not need or require regular inspecting.

In any case, a reason would be needed to ask the POCO to open the meter if a problem was suspected to be behind their seal.

Roger



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