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UMC cable question

Discussion in 'Roadster: Technical' started by asgard, Sep 14, 2013.

  1. asgard

    asgard Member

    Joined:
    Aug 17, 2013
    Messages:
    305
    Location:
    CA
    Is it ok to leave the UMC cable plugged in 24x7x365?
    It does not seem to get hot when idle so I presume the electronics is not going to degrade.
    Thanks.
     
  2. Crispix

    Crispix Member

    Joined:
    Jun 24, 2013
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    Location:
    San Diego
    Absolutely ok. Most of us leave it plugged in all the time.
     
  3. caddieo

    caddieo Member

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    Palm Coast, FL
    That's the advice in the owner's manual.
     
  4. spaghetti

    spaghetti Member

    Joined:
    May 10, 2013
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    Location:
    Silicon Valley
    I would imagine that frequent plugging and unplugging would lead to a loose connection at the plug / receptacle, which would lead to increased heat, which could then lead to something melting. I leave my UMC plugged in.
     
  5. JPP

    JPP Active Member

    Joined:
    Feb 4, 2013
    Messages:
    2,302
    Location:
    SF Bay Area, CA
    I leave mine plugged in. But note that some folks report that the NEMA 14-50 receptacle is not rated for lots of connect-disconnect cycles. Thus I purchased a 2nd UMC NEMA 14-50 adapter which I keep in the UMC tote bag. If I need to, I disconnect the UMC at the adapter (and do not disconnect the 14-50 adapter from the wall). Thus I do not overuse the receptacle, and am not worried about failure. Of course this is a bit of overkill since a new receptacle is about $10-15, but did not want to run into the overheating/meltdown scenario occasionally noted here. I suppsoe that the connection between the UMC and adapters can fail too, so who knows what is really better.
     
  6. brianman

    brianman Burrito Founder

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    Messages:
    16,496
    No. The car is meant to be driven.
     
  7. hcsharp

    hcsharp Active Member

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    Location:
    Vermont
    Most states with labor laws say that you have to unplug it at least once on Christmas or Thanksgiving.

    :tongue:
     
  8. Puyallup Bill

    Puyallup Bill Member

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    Sep 7, 2012
    Messages:
    606
    Location:
    Puyallup WA
    Normally, I leave it plugged in. Exception - if we are going to be away for a couple of days or more, unplug both it and the LEAF EVSE.
    Just feel a bit more comfortable that way.
     
  9. Puyallup Bill

    Puyallup Bill Member

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    Location:
    Puyallup WA
    whoops!

    Roadster, and I'm an S. Sorry, but I think would do the same with a Roadster.
     
  10. jordanthompson

    jordanthompson 2010 2.0 Sport, VIN 0683

    Joined:
    Apr 27, 2011
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    525
    Location:
    Satellite Beach, FL
    Hah! Had to think a moment :-D
     

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