I third what Ray says. It is also my understanding that Tesla does not allow their installers to be "subs".
On Sun, Jul 19, 2020, 10:16 AM Jerry Shafer <jerrysgarag...@gmail.com> wrote: > I second what Ray says > Jerry > > On Sun, Jul 19, 2020, 12:49 PM Ray <r...@solarray.com> wrote: > >> There are so many really good Li Iron Phosphate Batteries available, that >> are actually designed for off grid, that I don't see any advantage to using >> a more unstable chemistry that is not designed for off grid. AC coupled >> is a 2nd huge no no for off grid, and can leave an unattended system >> completely inoperable. Anytime the main battery inverter shuts off for any >> of several reasons: overload, overtemp, low battery, etc., it also means >> that all charging of the system ceases as well. >> >> For Off grid, reliability is absolutely #1, and owner safety is directly >> related to that reliability. They can lose water, heat, refrigeration, and >> communications in an outage. I'm just tired of folks dabbling in off >> grid, and not taking it seriously. Why in the world would someone even >> consider using a product that its own manufacturer says should not be used >> off grid? >> >> Ray Walters >> Remote Solar >> 303 505-8760 >> >> On 7/19/20 10:54 AM, Jerry Shafer wrote: >> >> Hilton, Wrenches >> As I recall Tesla does not recommend their battery for off grid >> applications, they need to be connected to the internet and without that >> there may be warranty issues. I don't think that the off grid world and >> daily cycling would work well over time either. How would you jump start >> the power wall if it died do to low voltage cut out, a genny might work if >> it connects and stays connected this might also affect the warranty. >> Jerry >> NABCEP PV inspector >> >> On Sun, Jul 19, 2020 at 9:02 AM Hilton Dier III <hiltond...@gmail.com> >> wrote: >> >>> Greetings, Wrenches, >>> >>> I have an off-grid client who has been reading the buzz about the Tesla >>> Powerwall 2.0. I have been reading the data sheets and manual for it and it >>> appears to be AC coupled only. There was talk of a DC input version, but >>> apparently that fell by the wayside. I try to be agnostic about technology, >>> and I'd be willing to subcontract a Tesla-approved installer if, in fact, >>> this was the best solution. >>> >>> Does anybody have experience using the Powerwall 2.0 in an off grid PV >>> system? Is it AC coupled only? Can it take generator power without barfing? >>> What is the lead time on these? >>> >>> Many Thanks, >>> >>> Hilton >>> >>> -- >>> Hilton Dier III >>> Missisquoi River Hydro >>> Renewable Energy Design >>> >>> _______________________________________________ >>> 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://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> 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 >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette:www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: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 >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> 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 > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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