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Warning: Bellevue Model S HPWC cable @ 72A gets VERY hot

Discussion in 'Northwest' started by brianman, Jun 29, 2013.

  1. brianman

    brianman Burrito Founder

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    I'm on .51 and got the prompt when I tried to push it above 60A. Thinking nothing of it for the heavily used Bellevue store location, I cranked it up as far as it would let me (72A). I then charged for roughly 40 minutes.

    When I went to disconnect the cable it was very hot. Like "I forgot to put a saucer under the soup" hot.

    FYI for those that might end up doing the same. Gloves recommended if you use the Bellevue charger above the 60A mark. I've charged there at least a dozen times at 60A and had no issue.


    Note: I immediately called (before even driving out) the store to let them know about the issue so that they can address it but also add some warning signage in the near-term.
     
  2. onesixeight

    onesixeight Member

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    Brian,

    Quick question, I've only charged at Bell Sq once on the HPWC and I only got 40A. Do I need to go into the settings to push it to 72A?

    Does the car automatically set the safest setting or just the lowest setting?

    Thanks in advance!
     
  3. Blurry_Eyed

    Blurry_Eyed MS Sig #267, MX Sig # 761

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    If you have the twin chargers, the car should automatically ramp up to the higher amp setting, but I think it will only go to 60 amps if it detects a HPWC right now. You would need to go in and manually change it on the touch screen to the 72 amps. I believe the hardware detects it's communicating with a HPWC and chooses the 60 amp setting because there is currently an issue with many of the HPWC's blowing fuses at higher a higher amp setting. It sounds like the Bellevue HPWC has been updated with the new fuses.

    If you have a single on-board charger, 40 amps is the most you can pull from a charging station that is not a Supercharger.
     
  4. brianman

    brianman Burrito Founder

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    #4 brianman, Jul 1, 2013
    Last edited: Jul 1, 2013
    The S HPWC defaulted to 60A for me [at Bellevue's Tesla Store's courtesy area]. The 14-50 offered 40A. Are we talking about the same thing?
     
  5. Vger

    Vger Active Member

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    I have noticed that my UMC plug seems to be getting hotter on a variety of higher amperage sources than it did when it was new. I am concerned that the contacts may get dirty over time from being bounce around in the trunk or subjected to environmental dust while being plugged in/unplugged.

    Anyone else?

    Could this be a general problem with the connector?
     
  6. cinergi

    cinergi Active Member

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    FWIW my HPWC @72A after 1.5 hours is a luke-warm 107 at the cable as it exits the HPWC and 95 as it enters the car in 75 ambient.
     
  7. brianman

    brianman Burrito Founder

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    What did you have for breakfast 13 days ago? [Just curious how far your telemetry extends... :)]
     
  8. cinergi

    cinergi Active Member

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    :) Not QUITE sure what you mean ... but I do try to scan every update on TMC and happened to re-notice this thread after my car had been charging for 1.5 hours @72 (I only ran #4 wire) so I went out and checked.
     
  9. MBCMDR

    MBCMDR Member

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    My default is 63A for me with an 80A supply..
     

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