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<DIV><FONT face="Segoe UI">Hi Mark...the switch is used to actuate the demand regulator it's attached too. It's a micro switch and I guess anything is possible but I think unlikely</FONT></DIV>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>----- Original Message -----</B></DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>From:</B> Mark <<A href="mailto:mark@nashvilletn.org">mark@nashvilletn.org</A>></DIV>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>Cc:</B> shop-talk <<A href="mailto:shop-talk@autox.team.net">shop-talk@autox.team.net</A>></DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>Sent:</B> 10/8/2023 9:20:43 PM</DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>Subject:</B> Re: [Shop-talk] battery exploded ???</DIV>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal"><A href="https://support.rollsbattery.com/en/support/solutions/articles/816-hydrogen-off-gas-ventilation#:~:text=Through%20calculations%20we%20can%20show,oxygen%20must%20also%20be%20removed.">https://support.rollsbattery.com/en/support/solutions/articles/816-hydrogen-off-gas-ventilation#:~:text=Through%20calculations%20we%20can%20show,oxygen%20must%20also%20be%20removed</A>
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<DIV>I have seen this twice in the last 50 years in communications buildings. The above link explains the theory but we never identified the cause. Our assumption was a faulty charger but they were dead when we found the problem sometime after the event. What is the switch on the generator on the right side of the picture? Is it possible it created a spark?</DIV>
<DIV>Mark</DIV>
<DIV>Nashville</DIV></DIV>
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