Powershare fails in Utah. Looking for CT owner with powershare.

[DJAlan2000]

Just wondering about that phantom 'load' you mentioned...

It almost sounds like it was trying to run an EV Charger?? Like maybe there's some kind of 'loopback' causing that overload?

I think it's time to get the electricians back out there to get it working for you...

WE of course have a Solar system with 2 powerwalls, so we have to 'wait' until they get the software figured out, tested and all that before we can use it that way... BUT, with 2 PW3's, we don't really NEED it, but I'm hoping we can either 'sell' power back to SCE OR have the truck 'charge' the PW3's to 100% so our Model Y can 'charge on solar' faster...

Why is it that when you WANT to 'charge on solar', the batteries are always taking priority and needing to be charged up during the best time of the day (for solar)?? Did Tesla work something out with mother nature or something?? hehe...

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[MisterChilidog]

I live in Eagle Mountain and I have a working Power share installation. Honestly, it's been a zero thought/hassle/effort feature. A couple of times, my power has gone out and Power share promptly restored power to my home. I'd be happy to let you take a peak at my setup if you think it may help you get to the bottom of your issue.

 

[Dierk Reuter]

I live in Eagle Mountain and I have a working Power share installation. Honestly, it's been a zero thought/hassle/effort feature. A couple of times, my power has gone out and Power share promptly restored power to my home. I'd be happy to let you take a peak at my setup if you think it may help you get to the bottom of your issue.

Thomas, Thank you for the response and offer! Thank's to Jared's kind offer we now know it is the install. The truck works fine.

We also know that there a numerous communication errors between the gateway and the wall charger. I have inspected the low voltage communication wires between the two and they look correct.

The only progress is that the project manager has agreed to stop the relentless demands for payment until our system is actually working. I insisted on this because effectively the installer had no interest in making the system work because it was marked as completed and went to collection.

So patiently waiting........ waiting.... waiting.....

 

[hemiarch]

Thomas, Thank you for the response and offer! Thank's to Jared's kind offer we now know it is the install. The truck works fine.

We also know that there a numerous communication errors between the gateway and the wall charger. I have inspected the low voltage communication wires between the two and they look correct.

The only progress is that the project manager has agreed to stop the relentless demands for payment until our system is actually working. I insisted on this because effectively the installer had no interest in making the system work because it was marked as completed and went to collection.

So patiently waiting........ waiting.... waiting.....

Good job pumping the brakes on that. Hold onto your money until they make it absolutely right.

 

[mongo]

Thomas, Thank you for the response and offer! Thank's to Jared's kind offer we now know it is the install. The truck works fine.

We also know that there a numerous communication errors between the gateway and the wall charger. I have inspected the low voltage communication wires between the two and they look correct.

The only progress is that the project manager has agreed to stop the relentless demands for payment until our system is actually working. I insisted on this because effectively the installer had no interest in making the system work because it was marked as completed and went to collection.

So patiently waiting........ waiting.... waiting.....

What type of communication wire (pics?) and how long is the run?
Seems strange that would cause the truck to think it's overloaded...

 

[Dierk Reuter]

Well, no response from Tesla or Electryfy America. The consensus is that the house is overloading powershare. So this morning I measured the load on the phases leading to the house.

There is a total of 7A going through the two phases. So 7 * 120 -> 0.8 kW house load which matches the Tesla App. The amps were measured during the powershare cycles with the meter on max mode. NO changes. No sign of an amp spike. The "3" on the meter translates into 3A on the black phase.

However, they already ignored the tests that were done with electrify remotely with a house load of zero.

I am really not sure what to do at this point. Somehow I need to find a way to convince tier 3 support that their overload messages are a red hearing.

 

[PungoteagueDave]

The extra cable from UWC to Gateway is both power for GW and communication. Needed because nothing is powered to begin with other than the truck which is likely either asleep or disconnected .

The sequence (as I understand it) is:
Truck notices UWC lost power
Truck powers UWC (somehow)
UWC powers gateway
Gateway opens isolation switch and enables truck power export
Truck powers loads

No way. That process would effectively backfeed the grid. Depending on configuration, my understanding is the wake-up and switch over happens either in the gateway if the gateway resides between the main breaker box and the service supply, or if a critical loads box is used, then an added switch box is required. On my SunRun/Ford Lightning bidirectional system, this was all powered by a “dark start” battery, a separate box on the wall that was used to manually cut the grid connection before accessing power from either the truck, a separate HV battery, or both. Based on the system configuration, I seriously doubt whether the process is initiated on the truck side for Tesla systems. With Powerwall involved, it still works even if the truck isn’t plugged in, so it must reside in the gateway.
.

 

[mongo]

No way. That process would effectively backfeed the grid. Depending on configuration, my understanding is the wake-up and switch over happens either in the gateway if the gateway resides between the main breaker box and the service supply, or if a critical loads box is used, then an added switch box is required. On my SunRun/Ford Lightning bidirectional system, this was all powered by a “dark start” battery, a separate box on the wall that was used to manually cut the grid connection before accessing power from either the truck, a separate HV battery, or both. Based on the system configuration, I seriously doubt whether the process is initiated on the truck side for Tesla systems. With Powerwall involved, it still works even if the truck isn’t plugged in, so it must reside in the gateway.
.

Way, UWC powers Gateway via the 12V lines on the 4 wire communication cable, not AC.

Powerwall systems have a dumb gateway (no TACO) and directly communicate with and power the isolation switch.

 

[Dierk Reuter]

Well, no response from Tesla or Electryfy America. The consensus is that the house is overloading powershare. So this morning I measured the load on the phases leading to the house.

There is a total of 7A going through the two phases. So 7 * 120 -> 0.8 kW house load which matches the Tesla App. The amps were measured during the powershare cycles with the meter on max mode. NO changes. No sign of an amp spike. The "3" on the meter translates into 3A on the black phase.

However, they already ignored the tests that were done with electrify remotely with a house load of zero.

I am really not sure what to do at this point. Somehow I need to find a way to convince tier 3 support that their overload messages are a red hearing.

Well providing the amp measurements and a discussion with the head electrician of electrify America triggered Tesla to assign a dedicated engineer.

The other day i counted my emails on power share and cound some 230 emails.

I really hope this project will come to an end soon

 

[mongo]

Well providing the amp measurements and a discussion with the head electrician of electrify America triggered Tesla to assign a dedicated engineer.

The other day i counted my emails on power share and cound some 230 emails.

I really hope this project will come to an end soon

That's great to hear!
If the neutral forming transformer is only active when the isolation switch is in the off-grid position, that could be the issue.

 

[PungoteagueDave]

Way, UWC powers Gateway via the 12V lines on the 4 wire communication cable, not AC.

Powerwall systems have a dumb gateway (no TACO) and directly communicate with and power the isolation switch.

Still no way. You said the truck recognizes the grid outage and initiates the power switchover process. Yes, the gateway needs a power source to activate the switchover, but it initiates the process, not the truck. Think about it - how would it work with a powerwall and no truck hooked up?

 

[TyPope]

Looking of a CT owner who has working powershare. Ours has never worked. After an extensive review of the home install it was determined to be ok. It was suggested the truck had a problem. Well the truck just came back with a clean bill of health. I just had another test. Here is the report from the powershare support person:

===========================================================================

Hello,

This is ABC with Powershare support. Your case number for the Tier 2 inquiry is: ACXXX.

Per out test, we confirmed that the load in the home was showing only 1.0-1.3Kw before turning off the power to the home via the main breaker. Additionally, we confirmed there were no large appliances such as the A/C or any pumps running which may cause a spike in the amperage. Despite this, with the low load on the home, the Powershare system still reported that it was failing to back up due to an overload.

Additionally, we observed the system try several times to engage backup, however each time it still reported an overload.

==========================================================================

Now I am looking for a CT owner with working powershare. I would love to drive our truck over and see if out truck can power you home. If yes that would finally determine that there is a problem with the home install. If not the problem must be with truck.

I'm in Maryland but conversely, you could have someone with a CT in your area try to power your home with THEIR truck. You'd get the same narrowing of possibilities.

 

[mongo]

Still no way. You said the truck recognizes the grid outage and initiates the power switchover process. Yes, the gateway needs a power source to activate the switchover, but it initiates the process, not the truck. Think about it - how would it work with a powerwall and no truck hooked up?

Yes, the truck starts the overall process (by providing power), but the truck does not control the process (does not control switchover).

The sequence (as I understand it) is:
Truck notices UWC lost power
Truck powers UWC (somehow)
UWC powers gateway
Gateway opens isolation switch and enables truck power export
Truck powers loads

Truck recognizes the outage, just like it recognizes a Mobile Connector that isn't powered.
Gateway's TACO handles opening the isolation switch and telling the truck and Wall Connector that power export is ok.

Powerwall is completely different. The Powerwall is the Asset Controller (in V3) and directly communicates with and operates the isolation switch in the V3 Gateway. Powerwall provides it 12V just like the UWC & Cybertruck do.
In a Powerwall + Powershare system, the truck will act like a secondary Powerwall. The Primary Powerwall still controls and powers the Gateway.

The Gen 2 Powerwall Gateways had 12V jump terminals to boot the system when the Powerwall was disabled due to SOC and there was no grid power (think long outage with solar, but battery drained overnight).

 

[PungoteagueDave]

Yes, the truck starts the overall process (by providing power), but the truck does not control the process (does not control switchover).



Truck recognizes the outage, just like it recognizes a Mobile Connector that isn't powered.
Gateway's TACO handles opening the isolation switch and telling the truck and Wall Connector that power export is ok.

Powerwall is completely different. The Powerwall is the Asset Controller (in V3) and directly communicates with and operates the isolation switch in the V3 Gateway. Powerwall provides it 12V just like the UWC & Cybertruck do.
In a Powerwall + Powershare system, the truck will act like a secondary Powerwall. The Primary Powerwall still controls and powers the Gateway.

The Gen 2 Powerwall Gateways had 12V jump terminals to boot the system when the Powerwall was disabled due to SOC and there was no grid power (think long outage with solar, but battery drained overnight).

You just made my argument. In my system, PW3, Gateway3, two Wall chargers, solar, the truck has no role in controlling or distributing the energy through the process. It is NOT looking at the power cutoff and sending messages anywhere. It is a passive battery, full stop.

 

[mongo]

You just made my argument. In my system, PW3, Gateway3, two Wall chargers, solar, the truck has no role in controlling or distributing the energy through the process. It is NOT looking at the power cutoff and sending messages anywhere. It is a passive battery, full stop.

Your argument and system have nothing to do with the statement I was responding to which was operation of a Powershare only system.

Truck gets woke up by the gateway, they have a chat then power restored within about a minute or so to the house.

As discussed on June 12th, Gateway, in a Powershare only system, can't do anything if there is no power.

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