Enginerd
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Can you post to confirm the PW+ specs (max continuous current, overcurrent protection, etc.)?
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Discussion: "Powerwall +"
- Thread starter willow_hiller
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This is what they installed. As far as specs, I didn’t get much info and know only what others have posted here. All the paperwork I got from Tesla was for the old pw2. The installers said this was the first pw+ they installed. I’m in Fort Worth, TX.
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Did you get a separate Gateway box? Or did they install some sort of switch alongside your main meter?
If the latter, your install might be the first Gateway-less installation we've seen.
With the adapter ring on the meter, or with a separate gateway box between the meter and the main panel? Still waiting to see an instance of that adapter ring in real life.
Thanks for the photos. Can you show a closeup of the adapter ring, perhaps from the side so you don't need to black out the meter face? If there is any label on the ring, that would be interesting to see.
I see that there is a manual disconnect switch on the conduit to the meter adapter. That implies it is a current-carrying connection, not just a control connection for a shutoff relay in the adapter ring. That's different from Tesla's marketing photo of the PW+ that showed a small conduit to the adapter ring and a separate conduit going to the main panel. Your photo of the PW+ shows two conduits; does one of them go to your main panel?
Here is where that pipe connects to. No gateway. Looks like the meter connects to the switch and then goes through the wall to the pw. The top pipe is the solar panels.
They added breaker to the main panel and they said that was the battery breaker.
They added breaker to the main panel and they said that was the battery breaker.
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Given that, the meter adapter wiring may still be control only for a relay, rather than power; the disconnect would just be used as a convenient wiring compartment. I.e. the wiring would be:
Meter - Control Wiring Straight Through Disconnect - PW+ - Power Wiring Through Disconnect Terminals - Main Panel
If there's a requirement to have an ESS disconnect outside by the meter, that would explain this choice.
Of course, this is somewhere between speculation and an educated guess.
Cheers, Wayne
Good hypothesis, but I don't see a conduit from the disconnect to the main panel. I presume the disconnect is new for this installation since there would not have been a need for it without local generation.
If you look at the geometry, it is plausibly back to back with the disconnect.
Cheers, Wayne
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The photo inside the disconnect box also answers the other question I wondered: how would an emergency OFF button control a mechanical disconnect. Answer: it doesn't, that switch goes back to the PW+.
And it's interesting that the meter adapter is a Tesla product, so I guess no electrical equipment manufacturer came up with this idea before.
And it's interesting that the meter adapter is a Tesla product, so I guess no electrical equipment manufacturer came up with this idea before.
Generator transfer switches exist as meter adapters, but I'm not aware of anyone else putting a Microgrid Interconnect Device into a meter adapter.
Cheers, Wayne
They do allow them for solar: https://www.pge.com/pge_global/comm...tion/greenbook-manual-online/TD-7001B-007.pdf
But only for 125A, and smaller, panels.
I would be interested to hear their justification for disallowing a UL listed product applied in the intended manner.
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