Re: [RE-wrenches] Powerwall 2 AC PV regulation

2021-04-16 Thread Vincent Jolissaint
Hi Kirk, the maximum actual charge rate is 5kW per Powerwall. When you exceed that, or start getting full batteries, the Gateway tells the Powerwalls to frequency shift to 62-66 Hz. This takes the UL 1741 listed inverters out of the sweet spot, and they stop or curtail production. However, predict

[RE-wrenches] Lightning arrestor

2021-04-16 Thread Jay
What do folks recommend for 1000vdc 2 circuit 12 amp lightning arrestors? I would like it to fit onto DIN rail inside a Fronius 10kw. Thanks Jay Peltz Power ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Ch

Re: [RE-wrenches] Charging multiple battery banks from one array

2021-04-16 Thread Alex MeVay
I've had good luck personally with the Blue Sea ACR. It's automatic and solenoid-based, so while there's some parasitic draw, there's essentially no voltage drop. (The "Sure Power Multi Battery Isolator" seems to be diode based.) They are also bidirectional. If you'd like, it sounds like you c

[RE-wrenches] Charging multiple battery banks from one array

2021-04-16 Thread Dave Tedeyan
Hi All, I am adding solar to a boat, which is new for me. There are three batteries: one for each of two engines (both of which can also power DC loads), and a house battery connected to an inverter for AC loads on the boat. All three batteries are able to get charged from the two engine alternator

Re: [RE-wrenches] Powerwall 2 AC PV regulation

2021-04-16 Thread Matt Partymiller
They used to advocate 7.9kW AC/DC per Powerwall. That number may have gone down recently. Coupling an inverter on the line side of the backup gateway will resolve your issue of meeting homeowner demand. Tesla will want you to add a CT to that inverter to ensure it does not mess up their monit

[RE-wrenches] Powerwall 2 AC PV regulation

2021-04-16 Thread Kirk Herander, VSE
Hello all, I am adding more PV to an orphaned Powerwall 2 AC system (which is all new to me), -3- PW's stacked to total about 40kwh of usable storage. it presently has about 13kw of PV, though -2- SMA inverters, feeding into it through a common subpanel between the PW gateway and the main panel.