The issue I'm having with EG4 specifically and Signature Solar in general is a scattershot approach to UL and NRTL listings. Those listings may not be important to various DIY folks of varying levels of "git-er-done," but listings are critical for my business. Some products they sell are Listed per NEC, some are not, and some EG4 are listed, some are not. I recently contacted Signature Solar regarding their EG4 rack mount ESS modules and did not receive a satisfactory response, unfortunately a new off-grid client had already purchased an entire rack of them before consulting with me. Our county AHJ is very strict. I can't risk recommending or installing a system that would fail inspection. Here in Colorado they often even cross check the altitude ratings on all inverters. (sorry Schneider XW-Pro that I like so much, limit on your spec sheet is 2000m altitude)
Signature Solar provided the usual NRTL stamp for UL 1741SA etc etc on the EG4 rack batteries, then also a UL 9540A testing certificate that they said should be sufficient, and it disturbed me that they did not seem to understand that UL 9540A is NOT a listing - it's a fire-resistance test that an ESS manufacturer can use as a document to help obtain their actual UL9540 listing, and also gain exemptions to spacing and other requirements....but from my understanding it's NOT an actual UL or NRTL listing to UL 9540. When I inquired about that, Signature Solar stopped communicating with me. I'm pretty sure my understanding of UL 9540 listing vs. 9540A testing is correct, but I would appreciate any input before again gently confronting both AHJs and manufacturers. Dan Fink Owner, Buckville Energy Consulting LLC IREC Certified Instructor for PV and Small Wind Installation NABCEP Certified PV System Inspector NABCEP PV Associate d <dan.f...@greendustrialtraining.com>anbo...@gmail.com 970-672-4342 > > >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org 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
