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#85211 - 06/06/03 06:07 PM 250.104(A)(1)
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
250.104(A)(1) reads:
 Quote:
General. Metal water piping system(s) installed in or attached to a building or structure shall be bonded to the service equipment enclosure, the grounded conductor at the service, the grounding electrode conductor where of sufficient size, or to the one or more grounding electrodes used. The bonding jumper(s) used shall be sized in accordance with Table 250.66 except as permitted in 250.104(A)(2) and (A)(3)
Does this, by itself mean that water piping systems shall be bonded to the service equipment enclosure and the grounded conductor at the service?

Or does it mean bonded to either the service equipment enclosure or the grounded conductor at the service?

Bill

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#85212 - 06/06/03 06:46 PM Re: 250.104(A)(1)
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
Loc: N.C.
Bill, as far as grammar is concerned, (I don't know if you want to listen to me knowing how I did in grammar) items in sequence divided by commas followed by "and" are in addition to. Items in sequence followed by "or" are optional.

Roger

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#85213 - 06/06/03 06:56 PM Re: 250.104(A)(1)
txsparky Offline
Member

Registered: 05/25/01
Posts: 578
Loc: Magnolia,.Texas U.S.A.
Roger,
You get an "A+" today !!
_________________________
Donnie

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#85214 - 06/06/03 07:30 PM Re: 250.104(A)(1)
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Roger,

I think you're right.
Do you think that was the intent?

Bill

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#85215 - 06/07/03 08:48 AM Re: 250.104(A)(1)
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
Loc: N.C.
Thanks Donnie. Bill, I would say this was the intent. The part I think should be changed, is "or to the one or more grounding electrodes used". If the GE installation is soley rods and the GEC is #6 we would have a conflict with "the grounding electrode conductor where of sufficient size".

I mean if we bond to the GEC we have to concern ourselves with the size of the GEC but, if we attach to the GE itself the wording would let us ingnore the GEC size.

And on the same point, "The bonding jumper(s) used shall be sized in accordance with Table 250.66 except as permitted in 250.104(A)(2) and (A)(3)" what would this accomplish?

Roger

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