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FAQ: Home Tesla charging infrastructure Q&A

Discussion in 'North America' started by FlasherZ, Jan 10, 2013.

  1. Randy Spencer

    Randy Spencer Active Member

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    #481 Randy Spencer, Apr 29, 2019
    Last edited: Apr 29, 2019
    Don't get it
    You don't have a 48 Amp charger if you have a 100 pack?
    It's not a standard if you have a 100 pack?
    It doesn't make sense for residential installs if you have a 100 pack?

    I assume the limit to the charger is related to cost vs. charge time. If I drove 300 miles to work and back and it takes me 10 hours to recharge overnight vs taking 5 hours but much more expensive and I am still sleeping. Probably makes sense, but I would like to hear Tesla's reasoning.

    48 amps is pretty good on the TM3, if I had an X I would really want more speed.

    -Randy
     
  2. AWDtsla

    AWDtsla Active Member

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    You cannot buy a Tesla with anything other than 48A charging now, of any flavor.

    Actually I just heard one quite legitimate use of 80A charger - potential owner doesn't have anywhere to charge, but goes to his father-in-law's place for dinner 1-2x a week, and he's willing to install a charger. This is perfectly doable charger 2-4 hours a week (would be 40-80% SoC per week) would have plenty of charge to do weekly driving. Becomes less plausible charging half as fast.
     
    • Disagree x 1
  3. brucet999

    brucet999 Active Member

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    Gee, I would be thrilled to have my SIL freeload on dinners twice a week and also fill up his "tank" at the most expensive time-of-day electric rates. :(
     
    • Like x 1
  4. AWDtsla

    AWDtsla Active Member

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    :rolleyes::rolleyes::rolleyes:
     
  5. Randy Spencer

    Randy Spencer Active Member

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    48A is not half, but I do wonder if it, paired with the original SR Model 3's 32 AMP charger was planned to be available to create a 100 amp charger for the Model S/Xs. Seems a shame to have such an expensive car and the guy down the street with the cheap Tesla can fill his long-range battery in 2/3rds the time you can.

    -Randy
     
  6. AWDtsla

    AWDtsla Active Member

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    I have no idea what Tesla is thinking here. Home charging is need of a serious upgrade. All I've seen over the past 6 years is Tesla continually reducing home charging speeds in many different ways. In addition to that, efficiency seems to have hardly changed. 92% efficiency is good, but it's certainly not limited by technology. They could produce a 98-99% efficient charger, which would immediately be reflected in their EPA stickers.

    Seriously, WTF.
     
  7. TexasEV

    TexasEV Well-Known Member

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    No, Model 3 Standard Range (and plus) has 32A Charger.
     
  8. AWDtsla

    AWDtsla Active Member

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    You missed my point. Who cares, that's even worse. 48A is the best you can do.
     
  9. Tom Flyer

    Tom Flyer Member

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  10. Tom Flyer

    Tom Flyer Member

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  11. Tom Flyer

    Tom Flyer Member

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    I have installed many EVSES in houses, this is something you can't adapt to a dryer outlet. you need to have a qualified person to look at your panel and see if it needs to be upgraded. If it is a 100 amp panel it is unlikely that you should install a 50 or 60 amp breaker in it for a new EVSE. I recommend upgrading your panel first. I have seen too many overloaded panels that have been loaded with breakers and aux panels added, not a safe site. Your entrance wire, meter and panel can be inadequate to do the job. I have heard clients say this to me: "I won't run the dryer while charging", they are asking you to do something risky. Who do you think they will blame when their house burns down? A new separate circuit is the only way to go.
     
  12. ElectricLane

    ElectricLane New Member

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    Do you have any idea how Tesla “knows” what adapter is in use and thus how much current it can use?
    Please and thanks
     
  13. miimura

    miimura Well-Known Member

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    There is a resistor in the adapter that indicates the amperage of the plug.
     
    • Informative x 1
  14. Cosmacelf

    Cosmacelf Well-Known Member

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    If you look at an adapter, you'll see a number of small signal pins where it mates with the EVSE box. So, built into the adapter is signalling circuitry that tells the EVSE the max. amp draw it can handle. Newer adapters also contain a temperature sensor so the EVSE can throttle back if temps are too high, again communicated via the signal pins.
     
    • Informative x 1
  15. N4HHE

    N4HHE Member

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    There is a resistor in Tesla's Mobile Connector plug adapters which informs as to the type of adapter in use.

    It has no idea what is beyond the Tesla plug.
     

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