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#118117 08/12/04 08:35 AM
Joined: Dec 2000
Posts: 4,288
Member
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


[Linked Image]

#118118 08/12/04 12:09 PM
Joined: May 2004
Posts: 162
C
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Are those sheetmetal screws w/washers??

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

#118119 08/12/04 12:27 PM
Joined: May 2003
Posts: 1,157
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those screws are called Wafer teks they are all in in , I would use them mounting boxes to steel studding.

#118120 08/12/04 12:31 PM
Joined: Feb 2002
Posts: 840
C
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Looks like a GE ground bar in a Cutler Hammer panel. Not quite compatible.

Peter


Peter
#118121 08/12/04 06:01 PM
Joined: Jul 2004
Posts: 41
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Member
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
#118122 08/12/04 07:13 PM
Joined: May 2003
Posts: 2,876
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e57 Offline
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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
#118123 08/12/04 08:47 PM
Joined: Nov 2003
Posts: 127
S
Member
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.
#118124 08/13/04 01:13 AM
Joined: Sep 2002
Posts: 910
Likes: 1
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IMO, GE has the worst ground bars around, that split is "normal" for them.

#118125 08/13/04 05:43 AM
Joined: Jun 2003
Posts: 681
P
Member
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
#118126 08/13/04 03:46 PM
Joined: Feb 2004
Posts: 1,438
Member
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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