[RE-wrenches] NEC 690.74

[Glenn Burt]

Hi Phil,

 

I posted some information that is relevant back in March of 2009. It should
be in the searchable archives.

 

-Glenn Burt

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Philip
Boutelle
Sent: Monday, November 29, 2010 8:08 PM
To: RE-wrenches
Subject: [RE-wrenches] NEC 690.74

 

Wrenches,

 

We have a string of batteries being inspected by a local AHJ. In plan-check
comments, I was asked to ensure that the flexible cable was UL-listed, so we
made sure of this when it came from the suppliers. We used 4/0 RHW-2. Now
our inspector is asking if "RHW-2 is fine-stranded in Article 400 of the NEC
as required by 690.74?"

 

Article 400 doesn't explicitly define any cable types for use in battery
systems, and the one general disclaimer is in 400.4: "Types of flexible
cords and flexible cables other than those listed in the table shall be the
subject of special investigation". 

 

Has anyone had a similar request before? Anyone done a "special
investigation" on cables, and have results to share? Any other thoughts?

 

Thanks for any help,

 

-Phil

Real Goods Solar

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20101129/fb0e9f7d/attachment-0004.html>