Venting [RE-wrenches]

[Baran Galocy]

Lyn,

Call the battery manufacturer.  Ask them to "spec-out" a battery room for
you.  Much of it has to do with the location of the battery room, itself.
If they won't do this, it is tantamount to an admission that it need not be
done.   Is it an "add-on"  to the outside of an existing structure or a
"built-in" room that is part of the original structure?  Article 511-2 of
the NEC calls out vent. specs for commercial structures.  Also 551-10 (d)
addresses storage battery venting  for rv's.   Article 690-71 (h) deals
directly with storage batteries, and does NOT spec out forced venting.  Do
what I do, either conform or ask for a conference with the building
inspector's supervisor.  It is up to YOU to establish safe and sane
guidelines where none exist, NOT your building inspector who has only a
fraction of your knowledge.  Don't let this one incident set the standards
for the future of battery rooms in your county.

On the other hand, is there a danger in accumulated fumes?  Suggest to the
B.I. that you incorporate catalytic battery caps to remove the explosive
vapors.  Find a compromise, smile all the time, be charming but brave.  Half
of the inspection process is a dog-and-pony show, the other half is serious
business (to your bottom line, and the safety of your client).  Ask the
inspector why, if you need forced venting, that the issue was not addressed
by the NEC?  Does he think he's onto something they omitted?   Learn the
fine line of pacifying the building inspector while gaining his/her respect
as a knowledgeable installer of renewables and you will create a great
working environment for both of you.

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