Yes. This will occur on an 11kW 3 phase charger, they will not get the 7kW they might be expecting but 3.7kW instead. Which exist but not as common as 7kW single phase and 22kW three phase.
A Tesla car via the API that the tesla app uses is able to change the current amps. This is reasonably reliable and there is chatter that this will be made an official supported API mechanism. If you really mean setting the amps on the Gen3WC, which I think you do, this feature via the undocumented API only works while the Gen3WC is in its initial config mode which only lasts for, I think, 15 minutes. I think there were some techniques to extend this, or reset the 15 minute clock really, but this requires continued API calls to continue to keep the WC in this mode. If this for some reason is lost then it requires physical intervention with the WC to get it back into its config mode. So currently using this method is generally not considered robust enough.
Ok, sorry you got the 'Charging 404' answer. It should be as simple as setting the current amp limit manually while the car is charging. For automating this there are various API toolkits with I think the most popular being using Home Assistant. ChargeHQ will do an automated solar tracking by varying the charging amps via the API for a fee. If you have a Tesla powerall, tesla will RSN, offer solar tracking from within the Tesla app itself.
Thanks.
Manually adjusting is not a bad method.
Currently (and luckily) I do not have grid export limits.
and on track for similar in calendar year 2023.
Grid providers, probably rightly, don't mind larger 3 phase inverters, so have much higher or no limitation on these. They may still have a single phase tied inverter limit which the powerwall might rub up against. For those grid providers that do this I feel it is the wrong approach to have a rigid inverter size limit. A single phase solar inverter exporting its peak at peak solar export time is very different to a single phase battery thats export is generally lower and when it peaks at its max inverter limit does not coincide with a large number of other inverters and is not generally for a sustained period.Currently (and luckily) I do not have grid export limits.
In 2022 I exported 22,000 kWh
I'm also lucky as the house is the closest to the street pole transformer- when I export, I come in about 2V under the max street voltage at the 11am to 1pm period . If my neighbours start putting solar arrays it may push the 12 midday street voltage up against the max which will trip the inverter export function.
![[Zombie]](/tmc/data/avatars/l/236/236453.jpg?1658216431){kind=avatar}
Yes, but this feature was only released last weekend, so you will need to wait for both your car and your powerwall to have the latest firmware update.
www.tesmanian.com
The rumour is that RSN, real soon now, yes Tesla will offer this feature. There is a quoted minimum Tesla app version required and Tesla Powerwall version required for the feature to be enabled, though I don't have those versions off hand. The Powerwall Tesla gateway will share its data on the current sensors of what is the current grid export and based on the settings in the Tesla app the car will vary its amp settings, I presume this will come via the mothership though possible that Tesla will perform gateway to car comms directly, but this should be transparent from a user perspective.
Thank you (and for explaining the RSN acronym!). I had read about the upcoming "Charge From Solar" feature in March. I wasn't sure whether it was going to be limited to Wall Chargers somehow. Good to hear from [Zombie] that it is being rolled out. From my earlier reading, we will be able to set a minimum charge level to be maintained from any source, with the car topping up from solar to a higher upper limit. That will suit my situation very well if it works that way.
That is not normally how it works in Australia. The metering nets off all three phases.
Thanks, that was the comment by the solar installer when I asked him about PW on one phase. He said I needed 3 for 3phase. Maybe he was trying to sell me 3PW?
I can't comment for other areas, but I am in Qld with three-phase power, a three-phase solar PV inverter and one Powerwall 2 and Gateway 2 backing up circuits on one phase. The downside is that I can't use my solar PV during a power outage (for self-consumption or to charge the Powerwall). Apparently it would be plausible to have three single-phase inverters, in which case one of them could charge the Powerwall on its phase. That would mean the Powerwall is only charged by that phase (1/3 of the total PV output).
