Clarifications re Fine-Stranded Cables [RE-wrenches]

[Frank Fowler]

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This discussion is quite invigorating, but I still don't see the big problem 
with using welding cable for battery connections etc. other than someone, 
somewhere has decided for whatever reason that they are not adequate.
The acid tests that Drake did in 2000 seem quite clear to me that welding 
cable is the best choice for these applications.
----- Original Message ----- 
From: "Allan Sindelar" <allan at positiveenergysolar.com>
To: "New wrenches posting" <RE-wrenches at topica.com>
Sent: Friday, August 27, 2004 6:36 PM
Subject: Fw: Clarifications re Fine-Stranded Cables [RE-wrenches]




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> For the wrenches--just to clarify the record.
>
> It is unfortunate that the picture of the melted lug could not be posted.
>
> I am not from the nuke industry.
>
> I do not and have not received any money for beta testing Trace or
> any other products.
>
> I am not an employee of Sandia National Labs although I work closely
> with their PV group.  I am an employee of New Mexico State University
> and our funding comes from numerous sources including the US DOE.
>
> The DC 250 is a good piece of equipment (with tight wire bending
> clearances) and Trace/Xantrex is not responsible if the wrong
> conductors are used with it.
>
> I was one of the beta testers on Trace SW4024 (SN 2), but did not use
> it with the DC 250 enclosure. I used a 250-amp breaker in an
> enclosure from Rain Shadow Solar
>
> I publicized the availability of Cobra Flex THW years ago.  Ask Bob-O.
>
> My PV/NEC Suggested Practices Manual has for many years mentioned the
> use of flexible conductors such as the Cobra Flex THW, USE, and RHW
> cables.
>
> I proposed Section 690.74 in the Code that allows the use of Article
> 400 flexible cables for battery interconnections, although I
> personally don't see the need for them.
>
> Last week, I almost connected an excellent (expensive) piece of
> fine-stranded 2/0 AWG USE-2/RHW-2 to a 250 amp breaker, but decided,
> instead to install some of that $%$#@#! 2/0 THHN.
>
> I am glad to see that a few of the wrenches are thinking about and
> discussing this issue.  That is what I intended in the posting.
>
> Thanks.
>
>
> -- 
> If I can provide further information, please do not hesitate to call,
> e-mail or fax me.
>
> John
>
> John C. Wiles,  Program Manager
> Southwest Technology Development Institute, New Mexico State University
> 505-646-6105      505-646-3841 (FAX)   http://www.NMSU.Edu/~tdi
> SWTDI/NMSU
> Corner Research Drive and Sam Steel Way
> Box 30001/MSC 3 SOLAR
> Las Cruces, NM 88003-8001
>

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