UWC PowerShare Daisy Chain Question

[Korben Dallas]

Situation - My Cybertruck’s home is normally in a 2-stall carport that shares a wall with the garage where it gets parked when we’re out of town. And two years ago we added a pair of PowerWalls, a Gateway, a Universal Wall Connector (UWC1), & a PV system too, all in anticipation of PowerShare becoming available at sometime in the future.

The UWC is installed on a 4x4 support post between the two carport stalls & I would now like to daisy chain a second UWC(2) inside the garage downstream of UWC1.

So this is my question. When parking the Cybertruck in the garage when we’re out of town on an extended trip, will UWC2 also support PowerShare?

I ask that question because the UWC installation manual is silent on that aspect and UWC1 is considered the “lead" unit. If not, then I guess I’ll be forced to park it in the carport if want the Cybertruck to power the house when a power outage strikes.

Appreciate all your help folks.

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[mongo]

Situation - My Cybertruck’s home is normally in a 2-stall carport that shares a wall with the garage where it gets parked when we’re out of town. And two years ago we added a pair of PowerWalls, a Gateway, a Universal Wall Connector (UWC1), & a PV system too, all in anticipation of PowerShare becoming available at sometime in the future.

The UWC is installed on a 4x4 support post between the two carport stalls & I would now like to daisy chain a second UWC(2) inside the garage downstream of UWC1.

So this is my question. When parking the Cybertruck in the garage when we’re out of town on an extended trip, will UWC2 also support PowerShare?

I ask that question because the UWC installation manual is silent on that aspect and UWC1 is considered the “lead" unit. If not, then I guess I’ll be forced to park it in the carport if want the Cybertruck to power the house when a power outage strikes.

Appreciate all your help folks.

In a Powerwall setup, the Cybertruck can feed the house from any backed up WC.

It sounds like (daisy chain) you are planning on using group power management? If so, there is this note in the installation manual: "The Wall Connector Dynamic Power Management and/or Group Power Management features are not available when installing Universal Wall Connector for Powershare."
But that might only be for non-Powerwall installs.
https://energylibrary.tesla.com/doc...UID-04DE7F20-2290-4489-A9A1-53F639BB85CB.html

 

[Korben Dallas]

In a Powerwall setup, the Cybertruck can feed the house from any backed up WC.

It sounds like (daisy chain) you are planning on using group power management? If so, there is this note in the installation manual: "The Wall Connector Dynamic Power Management and/or Group Power Management features are not available when installing Universal Wall Connector for Powershare."
But that might only be for non-Powerwall installs.
https://energylibrary.tesla.com/doc...UID-04DE7F20-2290-4489-A9A1-53F639BB85CB.html

Well, it sounds like I have more research to do Mongo. Thank you for bringing that to my attention.

So if I can’t hook them together in that way, then perhaps my only other choice would be to put UWC2 on a separate house circuit connected to the main panel & forget about PowerShare in the garage entirely.

And Happy Father’s Day to you and all the other dads out there.

 

[mongo]

Well, it sounds like I have more research to do Mongo. Thank you for bringing that to my attention.

So if I can’t hook them together in that way, then perhaps my only other choice would be to put UWC2 on a separate house circuit connected to the main panel & forget about PowerShare in the garage entirely.

And Happy Father’s Day to you and all the other dads out there.

If the house is backed up by Powerwalls and you put UWC2 on breaker in that panel, it will do Powershare once the software is released.
If the garage is backed up by Powerwall and you have a WC there, it should also work with Powershare (eventually).

What I'm not sure of is how a Group Managed cluster of Gen3 wall connectors in a Powerwall setup works with Powershare (esp the follower units).

 

[hemiarch]

I have the same question. I have a UWC which also group power manages a gen 3 WC on the outside of the garage where the truck mostly parks. They are wired together to a 60 amp breaker on the backed up panel. Also have another UWC still in the box. It would be useful to know if it’s worth upgrading the slave to the UWC or if the group power management setup precludes PowerShare altogether.
As I understood it, only the UWC will be able to backfeed power from the truck and not the gen 3 WC even if not daisy chained . Is that correct?
I also worry because the UWC WiFi connection has been flaky at best and I’m not excited about my home energy backup being dependent on such shitty software. Interestingly the gen 3 WC which is further from the router and on the other side of an additional wall remains connected flawlessly.

 

[mongo]

I have the same question. I have a UWC which also group power manages a gen 3 WC on the outside of the garage where the truck mostly parks. They are wired together to a 60 amp breaker on the backed up panel. Also have another UWC still in the box. It would be useful to know if it’s worth upgrading the slave to the UWC or if the group power management setup precludes PowerShare altogether.
As I understood it, only the UWC will be able to backfeed power from the truck and not the gen 3 WC even if not daisy chained . Is that correct?
I also worry because the UWC WiFi connection has been flaky at best and I’m not excited about my home energy backup being dependent on such shitty software. Interestingly the gen 3 WC which is further from the router and on the other side of an additional wall remains connected flawlessly.

Yah
With a non-Powerwall Powershare setup, the UWC is required and group power management is not supported. So replacing the follower WC with UWC won't help Powershare.

Non UWC WC work in Powerwall setups (eventually).

I dont think Powershare without Powerwall uses wifi during backup. There is hardwired communication end to end.

 

[hemiarch]

Yah
With a non-Powerwall Powershare setup, the UWC is required and group power management is not supported. So replacing the follower WC with UWC won't help Powershare.

Non UWC WC work in Powerwall setups (eventually).

I dont think Powershare without Powerwall uses wifi during backup. There is hardwired communication end to end.

But I expect it will rely on WiFi with powerwall. There is no other connection I know of
.

 

[mongo]

But I expect it will rely on WiFi with powerwall. There is no other connection I know of
.

Yeah, but I think the wifi communication in that case is to the truck, not the wall connector.

 

[hemiarch]

Yeah, but I think the wifi communication in that case is to the truck, not the wall connector.

I see. That makes sense. I just hate how no matter what I do the UWC won’t stay reliably connected. The further gen 3 does but not the UWC.

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