Discussion: "Powerwall +"

[oholladay]

That is at least logical. It is not what I was told about my units, but I guess time will tell.

I confirmed Tesla that my Powerwalls were manufactured in November 2020, and this method is consistent with that. My SNs start with TG120310, TG120314, and TG120315, which would indicate manufacturing in the first and second weeks of November. They were installed the third week.

However, my part numbers are all 1092170-05-J. Wondering if the main difference in the new ones is a newer inverter model and thus some manufactured during this "transition" time period used old inverters that were still in the warehouse.

 

[Mark_T]

However, my part numbers are all 1092170-05-J. Wondering if the main difference in the new ones is a newer inverter model and thus some manufactured during this "transition" time period used old inverters that were still in the warehouse.

That would be entirely consistent with previous major component changes on Tesla products.

They keep going until the bin is empty then start on the new stuff so one line can be producing 'new' untis while another is still using up old stock...

 

[jhn_]

I confirmed Tesla that my Powerwalls were manufactured in November 2020, and this method is consistent with that. My SNs start with TG120310, TG120314, and TG120315, which would indicate manufacturing in the first and second weeks of November. They were installed the third week.

However, my part numbers are all 1092170-05-J. Wondering if the main difference in the new ones is a newer inverter model and thus some manufactured during this "transition" time period used old inverters that were still in the warehouse.

Yeah just confirmed my three have SNs that start with TSN120312… so they were manufactured on November 7th and installed December 4th.
And they are part # 1092170 as well. No plus for me, oh well.

 

[arnolddeleon]

TPN: 3012170
TSN: TG121073

I checked the wire that was used for my install that was done in March 2021 and it is 10 AWG so no future proofing was done.

 

[pdx_m3s]

TPN: 3012170
TSN: TG121073

I checked the wire that was used for my install that was done in March 2021 and it is 10 AWG so no future proofing was done.

Elon is finding out the hard way that there are limits to what can be accomplished via software update. This is just another example of how poor the internal communication is within Tesla Energy.

 

[h2ofun]

Elon is finding out the hard way that there are limits to what can be accomplished via software update. This is just another example of how poor the internal communication is within Tesla Energy.

It does not seem you need anything but 10 gauge wire.

 

[pdx_m3s]

It does not seem you need anything but 10 gauge wire.

A proper install would not put a load bigger than 5.8kW on a 30 amp circuit with 10 gauge wire. 30amps * 80% * 240volts = 5.76kW. That's not a 50% power increase from 5kW.

 

[h2ofun]

A proper install would not put a load bigger than 5.8kW on a 30 amp circuit with 10 gauge wire. 30amps * 80% * 240volts = 5.76kW. That's not a 50% power increase from 5kW.

I have not heard of any STEADY state power, just surge. Big difference I believe

 

[wwhitney]

A proper install would not put a load bigger than 5.8kW on a 30 amp circuit with 10 gauge wire. 30amps * 80% * 240volts = 5.76kW. That's not a 50% power increase from 5kW.

Just for the record, your statement is missing the word continuous, as in continuous load. For a non-continuous load it can be the full 7.2 kW.

[And starting surges for motors and the like can be more in practice. So it would be fine for a Powerwall to support, say, 10 kW for 10 seconds on a 30 amp circuit, if it is capable of doing so.]

Cheers, Wayne

 

[h2ofun]

Just for the record, your statement is missing the word continuous, as in continuous load. For a non-continuous load it can be the full 7.2 kW.

[And starting surges for motors and the like can be more in practice. So it would be fine for a Powerwall to support, say, 10 kW for 10 seconds on a 30 amp circuit, if it is capable of doing so.]

Cheers, Wayne

And yep, 10 gauge wiring and a 30 amp breaker are just fine

 

[pdx_m3s]

I should have clarified that I meant to say continuous load. Either way, the 50% power increase was (at least out of Elon’s mouth) never restricted to surge capacity, I believe.

 

[h2ofun]

NO

I should have clarified that I meant to say continuous load. Either way, the 50% power increase was (at least out of Elon’s mouth) never restricted to surge capacity, I believe.

Not how I read it.

 

[pdx_m3s]

NO

Not how I read it.

That’s great. I guess this is what happens when all we have is a tweet and a few comments off the cuff from an earnings call. Typical Tesla fashion.

 

[Chilam]

Here’s my PW2+ installation. Note that the new PW2+ Does allow the solar array to do net-metering (back feeding the grid) while supplying power to both home use and battery storage.

 

[pdx_m3s]

Note that the new PW2+ Does allow the solar array to do net-metering (back feeding the grid) while supplying power to both home use and battery storage.

Huh? So say your generating 8kW, house is using 1kW and PW is charging at 5kW. What happens to the other 2kW? Curtailment?

 

[MP3Mike]

Huh? So say your generating 8kW, house is using 1kW and PW is charging at 5kW. What happens to the other 2kW? Curtailment?

Huh? I'm seeing 7.6kW generation: 5.6kW to the grid, 0.9kW to the battery, and 0.8kW to the house. (Leaving a loss of 0.3Kw.)

 

[mongo]

Huh? So say your generating 8kW, house is using 1kW and PW is charging at 5kW. What happens to the other 2kW? Curtailment?

I may be misunderstanding, they said it does allow feeding the grid, not doesn't. In the event that grid feeding is not permitted, then the solar side production would be reduced to the house + PW charge demand (potentially under utilizing the available panel capacity).

 

[Chilam]

I've seen some post saying the new PW2+ DOES NOT backfeed to the grid BUT in fact IT DOES - that's what I was trying to clarify.

 

[Chilam]

Huh? I'm seeing 7.6kW generation: 5.6kW to the grid, 0.9kW to the battery, and 0.8kW to the house. (Leaving a loss of 0.3Kw.)

Might be less than 0.3kw loss due to rounding / significant digit as solar array is feeding 3 locations at the same time - up to 0.1kW rounding errors each.

 

[pdx_m3s]

I've seen some post saying the new PW2+ DOES NOT backfeed to the grid BUT in fact IT DOES - that's what I was trying to clarify.

Thank you. I totally misread your post as “doesn’t”. I need more sleep.