We want to see the certificate of compliance for UL and all the good paperwork for power system electronics, especially offgrid.
Most in the Sierra can't get fire insurance so we build even better redundant systems with that in mind. I do not care so much where the equipmens origin is as much as the company behind it. I like it when a company diversifies it's manufacturing to many countries. This plays really well right now in the times of C19 and supply lines being strained. Trying also to keep an open mind about the Chinese government. Weird how certain items have back-logs also these days. 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 Tue, 5 Jan 2021 08:56:16 -0500, Chris Sparadeo wrote: I totally get that most off-grid jobs won't be inspected, however isn't it still a good idea for components to carry a UL listing in the event of a fire? It seems like an easy thing for a fire investigator/insurance company to pick out, even if it was not the origin of the fire. That's been a (perhaps self made) deterrent for me over the years. Any thoughts? On Tue, Jan 5, 2021 at 8:38 AM Chris Mason wrote: The Growatt inverters are top quality, they ship a huge amount of inverters. They make US models in split phase. What happened here is the client ordered something he knew nothing about from a vendor that also knew nothing. I run into this all the time. That's what we get the big bucks for. We buy a lot of chinese inverters for different islands. If we want 230V 2 wire to suit the island, that's what we order. In some cases we order 120V, some are 240V split phase, and some are 230V. If it's off-grid, will there be a requirement for UL listing? I would not worry about the quality of the inverter, they are excellent. I would worry about the design. If you are not confident, walk away. You will be expected to make it work or keep trying, and the damage to your reputation if it all fails will be hard to counter. The client is never wrong. On Mon, Jan 4, 2021 at 7:33 PM Chris Schaefer wrote: G'Day and Happy New Year's All, Just wanted to share this with you all. A potential client purchased a somewhat complete system off the internet and is now seeking an installer. I know, same old story. The package came with two Growatt SPF-5000 ES inverters with two Huawei HW-TX-5000 transformers. The twist to the story is apparently the inverters put out 230vac on a single leg and the transformers are required to split the 240vac into two legs of 120. I've never come across an inverter like this. As an off gridder the first thing I think of is the inefficiencies of the additional transformers to do something like this when we have plenty of manufacturers that don't require this. I'd love to hear your thoughts on this setup and possible experiences and pitfalls to beware of. PS the client is kicking themselves in the butt, lol. Gratefully, Christopher-- Chris Schaefer's Tel/Fax 585-229-2083 or Cell 585-748-1870 5115 South Hill Road [6] ~ Canandaigua New York 14424 _www.solarandwindfx.com [7] ~ E-mail: ch...@solarandwindfx.com [8]_ Thomas Jefferson, the author of our great Constitution, once said, "democracy" will cease to exist when you take away from those who are willing to work and give to those who would not." _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [9] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [10] 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/ [11] http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [12] List rules ">Chris Mason Solar systems designer Generac Generators Industrial technician Comet Systems Ltd DBA Comet Solar Anguilla Cell 264.235.5670 WhatsApp 264.235.5670 Skype: netconcepts www.cometsolar.com [15] _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [16] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [17] There are two list archives for searching. 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_______________________________________________ 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
