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Electrical Inspections Contains discussions about electrical systems. This includes receptacles, panels, wiring, etc.

 
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  #1  
Old 8/2/09, 8:33 AM
Gerald C. Wilcox's Avatar
Gerald C. Wilcox Gerald C. Wilcox is offline
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Default How many EGC under one screw?

Is there a limit? Or can you like the picture shows, stuff as many as you can get in..........Cutler Hammer 100 amp panel.
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Last edited by gwilcox; 8/2/09 at 9:50 AM.. Reason: Added more info
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  #2  
Old 8/2/09, 8:47 AM
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Default Re: How many EGC under one screw?

The panel will tell you how many and of what size can go underneath one of the screws. Just looking at the pic, I would say there are too many.



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  #3  
Old 8/2/09, 2:01 PM
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Gerald C. Wilcox Gerald C. Wilcox is offline
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Default Re: How many EGC under one screw?

bump
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  #4  
Old 8/2/09, 2:32 PM
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Christopher Currins Christopher Currins is offline
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Default Re: How many EGC under one screw?

Usually no more than 3.

"The product standard(UL 67-Clause 17.2.6) allows multiple equipment grounding conductors, but not more than 3 No.10 AWG or smaller in a single opening in a wire terminal."



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  #5  
Old 8/6/09, 2:31 AM
rbibler rbibler is offline
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Default Re: How many EGC under one screw?

I will call it if there is more then one.

Best

Ron

Last edited by rbibler; 8/6/09 at 3:00 AM..
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  #6  
Old 8/6/09, 7:06 AM
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David P. Valley David P. Valley is offline
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Default Re: How many EGC under one screw?

Quote:
Originally Posted by ccurrins View Post
Usually no more than 3.

"The product standard(UL 67-Clause 17.2.6) allows multiple equipment grounding conductors, but not more than 3 No.10 AWG or smaller in a single opening in a wire terminal."
A agree.
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  #7  
Old 8/6/09, 7:07 AM
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David P. Valley David P. Valley is offline
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Default Re: How many EGC under one screw?

Quote:
Originally Posted by rbibler View Post
I will call it if there is more then one.

Best

Ron
Ron, I believe you are referring to neutrals. 3 grounds can be placed under one screw.
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  #8  
Old 8/6/09, 12:41 PM
Mark Thorman Mark Thorman is offline
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Default Re: How many EGC under one screw?

I would call out the black wire also.

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  #9  
Old 8/6/09, 1:09 PM
Jim Port Jim Port is offline
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Default Re: How many EGC under one screw?

Quote:
Originally Posted by dvalley View Post
Ron, I believe you are referring to neutrals. 3 grounds can be placed under one screw.
This is not always the case for grounding wires. The label would really need to be checked for the quantity and size ranges acceptable.

Neutrals, 1 wire per hole.
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