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#86976 - 12/27/03 12:56 PM Solid or Stranded
Ryan_J Offline
Moderator

Registered: 08/19/03
Posts: 1355
Loc: West Jordan, Utah, USA
I have long heard the argument about solid or stranded #8 bonding jumpers being used to satisfy 680.74

I ran into this the other day:




This is a 1/0 for a hydromassage tub!!! The installer was upset with me for requiring a 1/0 to bond his service lateral conduit, so he decided to bond everything with 1/0.

[This message has been edited by Ryan_J (edited 12-27-2003).]
_________________________
Ryan Jackson,
Salt Lake City

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#86977 - 12/27/03 08:19 PM Re: Solid or Stranded
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
[quote]requiring a 1/0 to bond his service lateral conduit ..[/quote}

Ryan:

Please explain the scenario?
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Joe Tedesco, NEC Consultant

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#86978 - 12/28/03 04:58 PM Re: Solid or Stranded
Ryan_J Offline
Moderator

Registered: 08/19/03
Posts: 1355
Loc: West Jordan, Utah, USA
Joe: The service entrance conductors are rated for 400 amps. 250.102 (C) refers one to 250.66 for bonding jumpers installed on the line side of the service disonnecting means.

Very popular residentail installation in my neck of the woods.
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Ryan Jackson,
Salt Lake City

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#86979 - 12/28/03 05:34 PM Re: Solid or Stranded
Ryan_J Offline
Moderator

Registered: 08/19/03
Posts: 1355
Loc: West Jordan, Utah, USA
THREADJACK!!!

We had a very nice discussion about bonding the line side of a service at this thread:

http://www.mikeholt.com/codeforum/ultimatebb.php?ubb=get_topic;f=7;t=000426
_________________________
Ryan Jackson,
Salt Lake City

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#86980 - 07/29/04 08:08 PM Re: Solid or Stranded
stamcon Offline
Member

Registered: 03/24/01
Posts: 322
Loc: So San Francisco CA
So, what's the answer to stranded or solid? With the wording "not smaller than a No. 8 solid", is the code describing the actual diameter of the conductor, with a stranded being larger than a solid of the same gage?

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#86981 - 07/29/04 08:44 PM Re: Solid or Stranded
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9045
Loc: Estero,Fl,usa
I read that as 8 Ga solid or a larger stranded size. The only place I know of that allows stranded 8ga for pool bonding is the bond wire in the PVC raceway to a wet niche forming shell. You can use stranded for equipment grounding (not the same thing).
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Greg Fretwell

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#86982 - 07/30/04 06:28 AM Re: Solid or Stranded
Ryan_J Offline
Moderator

Registered: 08/19/03
Posts: 1355
Loc: West Jordan, Utah, USA
As written, I beleive you could use #8 stranded, but I'm not sure that that is the intent.

Compare the language of 680.74 to that of 680.26
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Ryan Jackson,
Salt Lake City

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#86983 - 07/30/04 08:13 AM Re: Solid or Stranded
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9045
Loc: Estero,Fl,usa
I agree 680.26(C) does say "solid copper conductor". I also see that they call the 8ga in the PVC to the forming shell an EGC, not a bond 680.23(B)(2)(b)
I guess there is method to the madness.
_________________________
Greg Fretwell

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#86984 - 07/31/04 08:56 AM Re: Solid or Stranded
cpal Offline
Member

Registered: 05/17/04
Posts: 165
Loc: Cohasset MA
Ryan
What size conductor did the installer wish to bond the service conduit (or conduits??)with??

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