Flame arrester for batteries [RE-wrenches]

[Kirk Herander]

Water Miser caps are specifically advertised as a flame arrestor.

Kirk Herander
Vermont Solar Engineering
802.863.1202
fax 802.863-7908
NABCEP(tm) Certified Solar PV Installer
Xantrex Certified Dealer Charter Member
NYSERDA-eligible installer
VT Solar Incentive Program Partner

-----Original Message-----
From: Bob Clark [mailto:bclark at solar-wind.us] 
Sent: Friday, April 20, 2007 8:47 PM
To: RE-wrenches
Subject: Flame arrester for batteries [RE-wrenches]



Dear Wrenches:

Our local electrical inspector has cited NEC 480.10, the pertinent part
(subsection A) of which states:

"Each vented cell shall be equipped with a flame arrester that is designed
to prevent destruction of the cell due to ignition of gases within the cell
by an external spark or flame under normal operating conditions."  This is a
small T105 battery bank for an off-grid system.

Are the caps on Trojan T105 batteries "flame arrester caps?"  If so, where
do I find documentation that they are (preferably online over the weekend,
as we need to respond to our AHJ on Monday)?

Thanks for your assistance.

Bob Clark
SolarWind Energy Systems, LLC
[Non-text portions of this message have been removed]


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