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#78064 - 08/13/01 02:31 PM J-box grounding
tmon Offline
Member

Registered: 07/05/01
Posts: 29
I would like to know everyones opinion on the grounding of every switch, receptacle and junction box. Are you guys requiring and/or installing a grounding jumper from the equipment grounds to the box?

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#78065 - 08/13/01 03:55 PM Re: J-box grounding
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
My opinion tmon, is not necessarily code driven as much as liability driven.

I say ground it ALL, a small price to pay for some sound sleep.

Of interest, i believe 380-12 addressed more stingent grounding of switches in the 99' code cycle.


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#78066 - 08/13/01 04:51 PM Re: J-box grounding
Redsy Offline
Member

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
Could you be more specific?
As far as j-boxes, I dont believe you have a choice if an EGC is run.(See 250-148)
Receptacles, the only other option is self-grounding receptacles.
As far as switches, see 380-9(b)

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#78067 - 08/13/01 06:17 PM Re: J-box grounding
electure Offline


Member

Registered: 12/24/00
Posts: 4229
Loc: Fullerton, CA USA
Ground it, Ground it, Ground it.

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#78068 - 08/19/01 06:15 AM Re: J-box grounding
George Corron Offline
Member

Registered: 05/16/01
Posts: 728
Loc: Lorton, Va USA
250-148 (a) Says If you have a separate grounding conductor pulled in the box, it will be bonded to that box. Nuff said ?

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#78069 - 08/19/01 06:20 AM Re: J-box grounding
George Corron Offline
Member

Registered: 05/16/01
Posts: 728
Loc: Lorton, Va USA
Shoot !!! another half answer, lemme do some more 'splainin' . Our specs at Dulles airport require that 1) You WILL pull an equipment grounding conductor, and 2) You WILL land it to any box it goes through - which, of course is very plain. Why ? you may ask.

In these days of cell phones, FRS radios, etc.. we find that RF has a nasty way of getting into and interfering with intricate systems. Also,Bill Summers stated several years ago that he wanted to see the practice of conduit bonding ended, then went into an expanation that convinced me thoroughly. There is the code, and a very quick reason.

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#78070 - 08/21/01 02:56 PM Re: J-box grounding
Glenn Offline
Member

Registered: 01/17/01
Posts: 78
To the doubter's, I suggest looking at the 1995 Annual Meeting NATIONAL ELECTRICAL CODE REPORT on PROPOSALS ( ROP );

Log # 950
5 - 309 - (250-114 )

on page 249.

Glenn

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