Hi William, Each Powerwall can accept 5 kW of continuous charge and 7 kW peak for 10 seconds. These values increase respectively with additional units (i.e. 10kW continuous for 2 units, 15kW for 3 etc). It’s my understanding that each unit can accept 7.6 kW of AC coupled PV. If PV is generating more than 5 kW for greater than 10 seconds , the Powerwall will frequency shift and turn off PV output. IMO not ideal to oversized a PV array greater than 5kW per unit for this reason.
No great solution for incorporating a generator to recharge batteries. Also, the last time I checked, the warranty for a system without internet connection is cut in half. I have never installed a Powerwall in an off-grid scenario and don’t see a real argument for it. However, the 200A transfer switch, stack-ability and generally lower cost do make it a reasonable option for grid-tied whole home back up. Kindly, Chris On Thu, Apr 28, 2022 at 9:02 PM Marco Mangelsdorf via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Max rating of the Gateway2 is 200A. > > Regarding a generator input, you're correct, there's no means that I'm > aware of to integrate a backup generator with the Tesla equipment that > would interact with the solar and storage. > marco > > On Thu, Apr 28, 2022 at 5:45 PM William Miller via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Friends: >> >> >> >> I have two questions about AC coupling Tesla systems: >> >> >> >> 1. Are there limits on how much power can be AC coupled through a >> Tesla gateway? Does it depend on the quantity of power-walls connected? >> >> 2. I understand a Tesla system does not have a separate generator >> input so if a generator is to be incorporated, a transfer switch is >> required upstream of the sole AC input. If the generator were to start on >> a sunny day, would the gateway protect the generator from receiving sell >> amps from the AC coupled inverters? >> >> >> >> Thanks in advance for any information that you are allowed to share. >> >> >> >> Sincerely, >> >> >> >> William Miller >> >> >> >> Miller Solar >> >> 17395 Oak Road, Atascadero, CA 93422 >> >> 805-438-5600 >> >> www.millersolar.com >> >> CA Lic. 773985 >> >> >> >> >> _______________________________________________ >> 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 >> >> _______________________________________________ > 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 > > -- Chris Sparadeo C_802-369-4458 H_802-728-3059
_______________________________________________ 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
