Battery enclosures and NEC [RE-wrenches]

[Matt Tritt]

John,

I believe that the best method for building battery boxes is 5/8th to 3/4" plywood with a fiberglaseed bottom. Plywood is very strong, and is actually very difficult to bring to the point of ignition - especially when compared to thermoplastics.

I have never seen a battery actually "catch fire", but have seen one or two explode (without flames). I have also never had a building inspector make a negative comment about plywood battery enclosures.

Matt T
---- John Raynes <john at raynes.com> wrote: 
> 
> Roy,
> 
> What do you use for an acid-proof liner?   I've tried a number of
> things but I've never been able to source anything at a reasonable
> price that I was happy with.  Anything that I'm sure will work has to
> be shipped in at considerable cost (like everything else we buy, these
> days).
> 
> Has anyone ever been cited for using wood (a highly flammable material,
> last time I checked) for battery enclosure construction?
> 
> John Raynes
> RE Solar
> Torrey, UT
> 
> 
> At 10:11 AM 10/4/2007 -0400, you wrote:
> 
> Nik,
> 
> Although Article 480 and 690 don't mention anything about it, we always
> use lockable enclosures.
> My main concern is kids....of all ages! Hasps are cheap....
> Our enclosures have an acid-proof liner, are tightly sealed and have
> voltage controlled active venting systems.
> We have about 40 in use at this time and have had no problem with the
> inspectors (so far!)
> 
> Roy Butler
> NABCEP Certified Solar PV Installer®
> NYSERDA eligible PV & wind installer Four Winds Renewable Energy, LLC
> 8902 Route 46
> Arkport, NY 14807
> 607-324-9747
> www.four-winds-energy.com
> 
> Although no trees were killed in the sending of this message, a large
> number of electrons were terribly inconvenienced.
> 
> 
> 
> 
> Nicholas Ponzio wrote:
> 
> I was under the impression that the NEC required a sealed, lockable
> enclosure for batteries but when questioned on it I couldn't find a passage
> in the code. Did I make that up? Does anyone else use lockable enclosures?
> 
> 
> Thanks in advance,
> -Nik
> 
> 
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> 


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