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Powerwall Questions

Discussion in 'Tesla Energy' started by cziegler, Aug 18, 2016.

  1. cziegler

    cziegler Member

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    Monrovia, California
    Thank you for the information! I have a couple of questions: 1) Can you tell me if Powerwall is capable of accepting 110/120 VAC input from a small portable generator to charge the batteries, such as, during a natural disaster? 2) What's the minimum input level from the PV string? For example, if I am only able to install 6 panels, and the additive voltage on the string is ~234VDC, do I have options? Thanks in advance!
     
  2. Cosmacelf

    Cosmacelf Active Member

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    1) no.
    2) Powerwall only works with Solaredge inverters and optimizers. I do believe the minimum string size for a Solaredge inverter is around 6 panels, but you'd have to check. I think it is a minimum wattage, so it would depend on how powerful or efficient the panel's are.
     
  3. ArtInCT

    ArtInCT Always Learning

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    Cosmacelf, does your inverter output 110V as well as 220V?
     
  4. nwdiver

    nwdiver Active Member

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    Residential 220v IS 110v; L-L = 220; L-N/G = 110v; Some inverters are only 110v since they only have 1 hot leg.

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  5. ArtInCT

    ArtInCT Always Learning

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    That is great, for suitable recharging of the Tesla, the two hot legs are important. Is there an amperage output limit on your inverter?
     
  6. Cosmacelf

    Cosmacelf Active Member

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    I don't have an inverter. AFAIK, all US household solar inverters output split phase 240V, which you can then get 120V from, just like from a normal panel. I would guess most gasoline or fuel powered generators are like that too.
     
  7. miimura

    miimura Active Member

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    Only generators above a certain size output 240V. For example, in the Honda gasoline generator product line, only the ones that are rated 4,000W and above output 120/240V.
     

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