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#91634 - 01/27/05 08:16 PM Meter Main Bonding
Active 1 Offline

Registered: 02/22/03
Posts: 684
Loc: Grayslake IL, USA
We have a 200 amp meter pedistal with a built in 200 amp circuit breaker. About 35' feet away is the first 200 amp panel. An equipment ground is run from the pedistal to the 200 amp panel with the 3 3ott conductors.

The dispute is if the 200 a panel inside should have the main bond screw in (bonding the neutral to ground).

I believe the meter serves as the main disco and is by design bonding the nutral and equipment ground. The inside panel would not be a service panel because the meter is the service. Right?

Then the water pipe ground should go to the meter and not the panel?



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#91635 - 01/27/05 09:00 PM Re: Meter Main Bonding
gfretwell Offline


Registered: 07/20/04
Posts: 9026
Loc: Estero,Fl,usa
If you are running 4 wires you will not reground the neutral at the second panel. That creates a parallel path.
Greg Fretwell

#91636 - 01/28/05 03:05 AM Re: Meter Main Bonding
Roger Offline

Registered: 05/18/02
Posts: 1779
Loc: N.C.
I agree, you would not tie the two together in these downstream panels.

Now, whether or not a ground rod is necessary at the down stream panels would be found in 250.32.


#91637 - 01/28/05 05:07 AM Re: Meter Main Bonding
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
I'd say ground rod or rods at meter base (install bonding screw), 4 wires from meter base to panel at the house. Float neutral bar at the house, Tie water pipe and what every gounding you have to the ground bar at the house.This is simlar to a Trailer hookup . If disconnect was mounted on the house outside then I;d say grounds to to panel outside, when remote I;d say No.

#91638 - 01/28/05 06:44 PM Re: Meter Main Bonding
Steve T Offline

Registered: 02/14/01
Posts: 312
Loc: Oak Park, IL, USA
You have it correct.

Now the next question is--can the GEC pass through the panel? (No splice)

#91639 - 01/29/05 03:04 PM Re: Meter Main Bonding
cpal Offline

Registered: 05/17/04
Posts: 165
Loc: Cohasset MA
What is the breaker on the pedistal used for ??

Hot sequence or cold??

Just a thought


#91640 - 01/30/05 12:31 PM Re: Meter Main Bonding
Active 1 Offline

Registered: 02/22/03
Posts: 684
Loc: Grayslake IL, USA
The disconect meter pedistal is mounted on the side of the house. Thanks for yor replys.


#91641 - 01/30/05 09:03 PM Re: Meter Main Bonding
eswets Offline

Registered: 03/07/04
Posts: 56
Loc: Lansing, IL, USA
I had a job like that. 200amp breaker on the meter ped, 200amp mlo panel. 2" ridgid from meter to panel with out bond screw. 3/4" conduit from meter to cold water ground. Thats how inspector wanted it.
BTW were you at leviton's LIN class in Northbrook on thursday? though I saw your company name.

#91642 - 01/30/05 10:21 PM Re: Meter Main Bonding
caselec Offline

Registered: 04/14/02
Posts: 557
Loc: San Jose, CA
The water piping of the dwelling should be bonded to the EGC buss of the panel at the dwelling. It should not be run separately to the meter main.

Curt Swartz

#91643 - 01/31/05 05:09 AM Re: Meter Main Bonding
resqcapt19 Offline

Registered: 11/10/00
Posts: 2209
Loc: IL
If there is metal underground water pipe, then the conductor between the water pipe and the electrical system is a grounding electrode conductor and must be connected to the grounded conductor at or on the line side of the service disconenct per 250.24(A)(1).

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