Hi Sly, The small part of the industry ( Offgrid ) mostly uses ground mounting and is not using MLSD. On some new offgrid homes I use rapid shutdown at MPPT level to get the permit if the AHJ can't be reasoned with. The Schneider rapid shutdown has a nice 600 vdc disconnect in it, that is useful later if the homeowner decides to abandon the extra electronics that can affect reliability.
We also protect the area under and near the modules to guard against a rare defect from causing a wildfire. I would like to hear what Outback is doing for this also from you guys please? FRIDAY !!! Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 On Fri, 29 Jan 2021 14:09:48 -0500, s...@ecologicalsystems.biz wrote: > So far the module level shutdown requirements have been a real blow to our > industry. The reliability and cost from a maintenance and installation > standpoint has been very hit or miss so far. It feels like this requirement > was rolled out far too quickly without enough forethought to its impact on > the industry. We are constantly going out and fixing problems with mlsd > installed by other contractors. Thankfully the problems have nothing to do > with the quality of the installations. The problems are almost all due to > premature failure of the products or some inherent defect in them. This is > a serious issue costing the industry time and resources and making our > installers less safe. It just doesn’t really accomplish the intended goal > of the requirement. > I’m curious how other wrenches are dealing with this issue. I recently > became aware of fixMLSD.com which appears to be focused on bringing a more > sensible approach to this requirement. > > Your thoughts are appreciated, > Sky Sims > Https://EcologicalSystems.biz > “Just An Old Wrench” > _______________________________________________ > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org _______________________________________________ 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 There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
