The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
Trumpy 8
sparkyinak 7
Who's Online
1 registered (sparkyinak), 220 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#44589 - 11/08/04 11:49 AM Ground conductor
Bert66 Offline
Member

Registered: 11/01/04
Posts: 78
Loc: 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.

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#44590 - 11/08/04 12:06 PM Re: Ground conductor
go fetch Offline
Junior Member

Registered: 10/28/04
Posts: 9
Loc: 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.

Top
#44591 - 11/08/04 01:06 PM Re: Ground conductor
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: 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.


_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

Top
#44592 - 11/08/04 01:42 PM Re: Ground conductor
Bert66 Offline
Member

Registered: 11/01/04
Posts: 78
Loc: 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

Top
#44593 - 11/08/04 03:22 PM Re: Ground conductor
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
Loc: 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

Top
#44594 - 11/08/04 03:23 PM Re: Ground conductor
earlydean Offline
Member

Registered: 12/22/03
Posts: 749
Loc: 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

Top
#44595 - 11/08/04 03:31 PM Re: Ground conductor
trekkie76 Offline
Member

Registered: 06/19/04
Posts: 219
Loc: 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 .

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

Top
#44596 - 11/08/04 04:13 PM Re: Ground conductor
Active 1 Offline
Member

Registered: 02/22/03
Posts: 684
Loc: 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

Top
#44597 - 11/08/04 04:24 PM Re: Ground conductor
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
Loc: 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

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals