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#81258 - 07/30/02 06:17 PM Ground Screw?
Jackson Offline
Junior Member

Registered: 07/30/02
Posts: 2
Loc: Pembroke Pines,FL,USA
How many ground wires can go under one ground screw on a ground bar? And were can I find that in the NEC.

Thank You

2014 / 2011 NEC & Related Books and Study Guides
#81259 - 07/30/02 06:58 PM Re: Ground Screw?
ElectricAL Offline

Registered: 10/10/01
Posts: 615
Loc: Minneapolis, MN USA
See 110.3(B)

Basically, read the ground bar manufacturer's instructions.

Al Hildenbrand

#81260 - 07/30/02 07:02 PM Re: Ground Screw?
caselec Offline

Registered: 04/14/02
Posts: 557
Loc: San Jose, CA
You need to look at the instructions with the ground bar or in the panel the ground bar is designed to fit. If nothing is said about installing multiple wires per hole the maximum would be one. The NEC does not specifically state the number of conductors. It is up to the manufacture of the panel and ground bar.
Curt Swartz

#81261 - 07/31/02 03:48 PM Re: Ground Screw?
3 Way Offline
Junior Member

Registered: 07/29/02
Posts: 6
Loc: TX
110.14(A)and 408.21

Joe Tedesco covers this topic...

here's a few pictures from Joe's archive


#81262 - 08/01/02 01:47 PM Re: Ground Screw?
Jackson Offline
Junior Member

Registered: 07/30/02
Posts: 2
Loc: Pembroke Pines,FL,USA
Thank you for your help.


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