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#107704 - 08/12/04 05:35 AM Is this ground bar OK
electure Offline


Member
Registered: 12/24/00
Posts: 4259
Loc: Fullerton, CA USA
Quote:
came across this ground bar in a otherwise normal & clean looking panel... I didn't make a huge issue of it to the owner of the store, but I did note it in the contract.....


Randy


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#107705 - 08/12/04 09:09 AM Re: Is this ground bar OK
cpal Offline
Member
Registered: 05/17/04
Posts: 162
Loc: Cohasset MA
Are those sheetmetal screws w/washers??

looks a little shakey 250.8 maybe 110.3 (B)??
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#107706 - 08/12/04 09:27 AM Re: Is this ground bar OK
dougwells Offline


Member
Registered: 05/03/03
Posts: 1137
Loc: kamloops BC Canada
those screws are called Wafer teks they are all in in , I would use them mounting boxes to steel studding.
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#107707 - 08/12/04 09:31 AM Re: Is this ground bar OK
CTwireman Offline
Member
Registered: 02/07/02
Posts: 840
Loc: Connecticut, USA
Looks like a GE ground bar in a Cutler Hammer panel. Not quite compatible.

Peter
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Peter
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#107708 - 08/12/04 03:01 PM Re: Is this ground bar OK
necbuff Offline
Member
Registered: 07/08/04
Posts: 41
Loc: Lebanon Tn USA
I don't believe this installation is code compliant. Sheet metal screws are not permitted to connect grounding conductors to enclosures. 250.8........... In this case, tek (self tapping) screws.
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Kenny Wilee
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#107709 - 08/12/04 04:13 PM Re: Is this ground bar OK
e57 Offline
Member
Registered: 05/27/03
Posts: 2876
Loc: S.F.,CA USA
Is it me, or does that bar look like it was cut in half for some reason?

If so both are a no-go.
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Mark Heller
"Well - I oughta....." -Jackie Gleason
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#107710 - 08/12/04 05:47 PM Re: Is this ground bar OK
Sir Arcsalot Offline
Member
Registered: 11/17/03
Posts: 127
Loc: Lynden, Washington
Quote:
Is it me, or does that bar look like it was cut in half for some reason?


Hmmm... split busses are BAD NEWS any way you look at them!!!!!!!

I just could not resist...!
_________________________
No wire bias here- I'm standing on neutral ground.
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#107711 - 08/12/04 10:13 PM Re: Is this ground bar OK
NORCAL Offline
Member
Registered: 09/25/02
Posts: 865
IMO, GE has the worst ground bars around, that split is "normal" for them.
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#107712 - 08/13/04 02:43 AM Re: Is this ground bar OK
PCBelarge Offline
Member
Registered: 06/08/03
Posts: 681
Loc: Dobbs Ferry, NY, USA
This poses an interesting situation for inspectors.
Do we violate the installation for not using the proper listed equipment for the enclosure, or do we say at least they separated the equipment grounds from the neutral so I am satisfied?
This is a very typical installation I see almost everyday.
This is clearly a violation of 110.3(B), but...

I will say this; I have seen large faults where the connection of the fittings and the screws were scortched - obviously not a good sign for the fault current path.

Pierre
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Pierre Belarge
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#107713 - 08/13/04 12:46 PM Re: Is this ground bar OK
Lostazhell Offline
Member
Registered: 02/21/04
Posts: 1428
Loc: Bakersfield, CA (Originally Or...
110.3(B) is the first thing that came to mind with me when I saw this also... The thing I mostly was concerned about was that the panel can is being used as the bonding means (No separate EGC coming in with the feeders via EMT). If it comes down to clearing a fault on the 60A 240V A/C circuit which is connected in this panel, will the buttonheads or wafer teks be reliable in doing so?

Could this technically fall under 250.8?

-Randy

-Randy
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