I just re-read the original post Drake. These are AGM batteries. Do you have a "belt, suspenders,...then a rocket pack" type of client here?
We typically vent our AGM boxes with small louver vents top and bottom to allow the batteries to ventilate for cooling purposes, not H2 concerns. With Regards, Daniel Young, NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 NABCEP Certified Solar Heating InstallerTM: Cert #SH031409-13 -----Original Message----- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Ray Walters Sent: Tuesday, October 28, 2014 11:12 PM To: RE-wrenches Subject: Re: [RE-wrenches] Passive Battery Venting That's why we usually have the batteries in a garage, basement, or out building that is not open to the living space. I've seen some cases of very well sealed and insulated enclosures allowing batteries to over heat, and also build up a lot of acid damaged connections. Boxes I've seen with more air space and less sealing don't get this build up, but you're correct: they do occasionally allow H2S into the surrounding area. R.Ray Walters CTO, Solarray, Inc Nabcep Certified PV Installer, Licensed Master Electrician Solar Design Engineer 303 505-8760 On 10/28/2014 8:10 PM, Jerry Shafer wrote: > > We do what we can to seal the enclosure so if or when a battery fails > and really gasses off the two vents on the same wall regardless of > wind direction will vent the gas. If it is not sealed then the gas can > travel through out the area this is not advised. > > _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 4031/7973 - Release Date: 10/29/14 ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 4031/7973 - Release Date: 10/29/14 _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org