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


Member
Joined: Dec 2000
Posts: 4,262
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 12:09 PM Re: Is this ground bar OK  
cpal  Offline
Member
Joined: May 2004
Posts: 162
Cohasset MA
Are those sheetmetal screws w/washers??

looks a little shakey 250.8 maybe 110.3 (B)??


#107706 - 08/12/04 12:27 PM Re: Is this ground bar OK  
dougwells  Offline


Member
Joined: May 2003
Posts: 1,140
kamloops BC Canada
those screws are called Wafer teks they are all in in , I would use them mounting boxes to steel studding.


#107707 - 08/12/04 12:31 PM Re: Is this ground bar OK  
CTwireman  Offline
Member
Joined: Feb 2002
Posts: 840
Connecticut, USA
Looks like a GE ground bar in a Cutler Hammer panel. Not quite compatible.

Peter


Peter

#107708 - 08/12/04 06:01 PM Re: Is this ground bar OK  
necbuff  Offline
Member
Joined: Jul 2004
Posts: 41
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.


Kenny Wilee

#107709 - 08/12/04 07:13 PM Re: Is this ground bar OK  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
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.


Mark Heller
"Well - I oughta....." -Jackie Gleason

#107710 - 08/12/04 08:47 PM Re: Is this ground bar OK  
Sir Arcsalot  Offline
Member
Joined: Nov 2003
Posts: 127
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.

#107711 - 08/13/04 01:13 AM Re: Is this ground bar OK  
NORCAL  Offline
Member
Joined: Sep 2002
Posts: 873
IMO, GE has the worst ground bars around, that split is "normal" for them.


#107712 - 08/13/04 05:43 AM Re: Is this ground bar OK  
PCBelarge  Offline
Member
Joined: Jun 2003
Posts: 681
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


Pierre Belarge

#107713 - 08/13/04 03:46 PM Re: Is this ground bar OK  
Lostazhell  Offline
Member
Joined: Feb 2004
Posts: 1,431
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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