Another way to do this that I often use for Offgrid is to build a small slab that a battery van can get to on an outside wall of the house. Pick a wall of the house that this will not be an eyesore.
Build up a 2 x6 wall with a removable top and side. In the summer, a fan ventilates it outdoors. In places where it is cold, the wall into the crawlspace, from the new box, is open and the batteries are at the temperature of the crawlspace. No bending or cramped conditions and easy to replace batteries. Easy access for fire people to shut down. Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail offgridso...@sti.net [2] text 209 813 0060 On Fri, 3 Aug 2018 02:12:04 +0000 (UTC), Jerry Caldwell wrote: Thanks for the advice everyone. These would be sealed AGM batteries. The access issues are definitely food for thought. Cheers, Jerry On Wednesday, August 1, 2018, 10:30:36 PM PDT, Ray wrote: Never laid on my stomach, I just have kneel pad I use for lots of stuff but it works good here too. I never get my face that close to the battery any way. Usually 2 to 3 ft is good. Ray Walters Remote Solar 303 505-8760 On 8/1/18 2:21 PM, Glenn Burt wrote: Interesting idea, but it looks like to service them you would have to lay on your stomach and get your face right in there? Not my idea of a good time! -Glenn FROM: RE-wrenches [3] ON BEHALF OF Ray SENT: Monday, July 30, 2018 3:32 PM TO: re-wrenches@lists.re-wrenches.org [4] SUBJECT: Re: [RE-wrenches] Batteries in 4' tall crawl space Article 110.26 covering clearances in front of electrical equipment applies. I worked on a couple like that, and I didn't like it. Very hard to move the batteries, and Combined with H2S, you are in what OSHA considers a confined hazardous space. Another way to use that crawl space is to build a trap door access from the floor above. This can work really nicely, and put the batteries right under the inverter without violating article 110.26. I think I saw a system that either Allan Sindelar or Windy Dankoff did like that. I've tried it a few times, and everyone (customers and inspectors) was happy. Here's a pic of some HUPs in a floor vault just below the inverter: Ray Walters Remote Solar 303 505-8760 On 7/30/18 8:37 AM, Dana wrote: Safe working clearance is 6'-8". I have been confronted with this issue in the past taking over other's systems care. This is a head banger & a major safety issue if something goes bad. If the batteries are 18-20" tall that only leaves anther 28-30" between bottom side of the floor joist ">The installation is bent over back-heavy move situation. I am assuming you have a dirt or gravel floor to move across? It seems like a good use of space up front but the reality of the install plagues you down the road. If it is WLA batteries it is the worst of situations. Even if this is not inspected, please avoid this situation. ---------------------------------------------------------------------------- Dana Orzel Great Solar Works, Inc. C - 208.721.7003 Idaho Contractor - # 028765 Idaho PV # 028374 NABCEP # 051112-136 www.solarwork.biz [5] "Responsible Technologies for Responsible People since 1988" P Please consider the environment before printing this email. FROM: RE-wrenches [6] ON BEHALF OF Jerry Caldwell SENT: Saturday, July 28, 2018 6:10 PM TO: re-wrenches@lists.re-wrenches.org [7] SUBJECT: [RE-wrenches] Batteries in 4' tall crawl space Wrenches, I have a customer who wants to have batteries installed in a 4' tall crawl space / short basement. Are there any accessibility code issues with installing batteries in a crawl space? Does the NEC address this? Thanks, Jerry Caldwell _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [8] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [9] List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html [10] List rules & etiquette: www.re-wrenches.org/etiquette.htm [11] Check out or update participant bios: www.members.re-wrenches.org [12] _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [13] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [14] List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html [15] List rules & etiquette: www.re-wrenches.org/etiquette.htm [16] Check out or update participant bios: www.members.re-wrenches.org [17] _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [18] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [19] List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html [20] List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org -- Links: ------ [1] http://members.sti.net/offgridsolar/ [2] mailto:offgridso...@sti.net [3] mailto:re-wrenches-boun...@lists.re-wrenches.org [4] mailto:re-wrenches@lists.re-wrenches.org [5] http://www.solarwork.biz [6] mailto:re-wrenches-boun...@lists.re-wrenches.org [7] mailto:re-wrenches@lists.re-wrenches.org [8] mailto:RE-wrenches@lists.re-wrenches.org [9] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [10] http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html [11] http://www.re-wrenches.org/etiquette.htm [12] http://www.members.re-wrenches.org [13] mailto:RE-wrenches@lists.re-wrenches.org [14] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [15] http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html [16] http://www.re-wrenches.org/etiquette.htm [17] http://www.members.re-wrenches.org [18] mailto:RE-wrenches@lists.re-wrenches.org [19] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [20] http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
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