Jay,
We bypassed it all. It is rated at 5kw and 7kw surge for 30 seconds. If you stack them you increase both of these numbers. When I helped my client do this, it was to get a back-up to the back-up offgrid. So, there really was not the issue with someone losing their refrigeration or water pumps. We know how to do offgrid BTW. Most of my bad mistakes offgrid were over 40 years ago. It was a good project for me and I learned alot. There is the old rumor that they will do the Powerwall 3 and it will have some DC coupling. I doubt it. You also need their 1.8k$ gateway to make a powerwall system. 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 Sun, 19 Jul 2020 13:45:11 -0700, Jay wrote: Does any know anything about the inverter in the power wall? I never hear anyone mention anything about it. Efficiency, surge, tare loss, repairability, AC charging capability, generator support, AGS, etc. All the normal inverter questions. Thanks Jay Peltz power. On Jul 19, 2020, at 1:16 PM, Jerry Shafer wrote: I second what Ray says Jerry On Sun, Jul 19, 2020, 12:49 PM Ray 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 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 [5] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [6] List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [7] List rules & etiquette: www.re-wrenches.org/etiquette.htm [8] Check out or update participant bios: www.members.re-wrenches.org [9] _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [10] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [11] List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [12] List rules & etiquette: www.re-wrenches.org/etiquette.htm [13] Check out or update participant bios: www.members.re-wrenches.org [14] _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [15] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [16] List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [17] List rules & etiquette: www.re-wrenches.org/etiquette.htm [18] Check out or update participant bios: www.members.re-wrenches.org [19] _______________________________________________ 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 Links: ------ [1] http://members.sti.net/offgridsolar/ [2] mailto:offgridso...@sti.net [3] mailto:r...@solarray.com [4] mailto:hiltond...@gmail.com [5] mailto:RE-wrenches@lists.re-wrenches.org [6] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [7] http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [8] http://www.re-wrenches.org/etiquette.htm [9] http://www.members.re-wrenches.org [10] mailto:RE-wrenches@lists.re-wrenches.org [11] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [12] http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [13] http://www.re-wrenches.org/etiquette.htm [14] http://www.members.re-wrenches.org [15] mailto:RE-wrenches@lists.re-wrenches.org [16] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [17] http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [18] http://www.re-wrenches.org/etiquette.htm [19] http://www.members.re-wrenches.org
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