TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Be wary of new HPWC installs...

Discussion in 'Charging Standards and Infrastructure' started by nwdiver, Jan 24, 2017.

  1. nwdiver

    nwdiver Active Member

    Joined:
    Feb 17, 2013
    Messages:
    2,932
    Location:
    United States
    So... I stopped by the new Microtel in Monahans, TX. They installed a pair of 80A destination chargers. Since I'm a Wyndham member they were kind enough to let me charge without getting a room. AWESOME I plug in but the car won't pull >12A.... I'm probably the 1st or 2nd person to ever use these... I had to remove zip ties from the cables. The breakers are on the back of the pedestal and they're clearly 100A. They were obviously installed but never configured.

    I go get a T20 bit from a local hardware store and try to fix them (with permission) but the screws are 'vandal proof'. You need a hollow T20. I give up and go to a nearby RV park that lets me charge for free since the owner also has a Tesla.

    ..... long story short.... auto parts stores DO carry the vandal proof T20 and both HPWC are now properly configured to deliver 80A. This will probably happen again.... Tesla needs to put a big red sticker on the HPWC especially the ones for the destination charger program to ensure they are configured correctly. And now you know how to fix this too. Go find an o Reilly get the Torx.... then return it ;)
     
    • Like x 8
    • Helpful x 3
    • Informative x 1
  2. KJD

    KJD Supporting Member

    Joined:
    Dec 14, 2013
    Messages:
    782
    Location:
    SLC, UT
    Thank you for fixing this so the next person can use it without problem.
     
    • Like x 3
    • Love x 1
  3. araxara

    araxara S-P85#3,218 X-90D#3,299

    Joined:
    May 11, 2012
    Messages:
    747
    Location:
    Tucson, AZ
    I installed 2 new HPWC, replacing the older ones, at my house. I had to delay the install because I didn't have the secure T20 bit. After getting one from Home Depot a few days later, I proceeded with the install, only to discover that the new HPWCs come with a hardware bag which includes the T20 bit. Maybe I should carry one in each car in case I run into the same situation as you.
     
  4. kort677

    kort677 Active Member

    Joined:
    Sep 17, 2015
    Messages:
    3,643
    Location:
    florida.
    what a shame, the installer apparently was either lazy or incompetent. fortunately I'd bet that this is an isolated incident.
     
    • Like x 1
  5. widodh

    widodh Model S 85kWh

    Joined:
    Jan 23, 2011
    Messages:
    5,099
    Location:
    Middelburg, The Netherlands
    I notice that a lot at home. Asking a electrician to install a Charging Station is usually something they have never done. They know how to handle breakers, but have no idea how to set a Pilot signal and such.

    They need to install it for the insurance since they are qualified, but I always assist in configuring the charging station afterwards.
     
  6. gavine

    gavine Petrol Head turned EV Enthusiast

    Joined:
    Apr 1, 2014
    Messages:
    1,348
    Location:
    Southern New Jersey
    It's scary to me that electricians are installing these without reading the instructions. Makes me wonder what else they did wrong.
     
  7. NikeWings

    NikeWings Active Member

    Joined:
    Apr 7, 2016
    Messages:
    1,846
    Location:
    Los Angeles
    . Like being a scary Tesla owner that's never cracked open the manual?
     
    • Like x 1
  8. kort677

    kort677 Active Member

    Joined:
    Sep 17, 2015
    Messages:
    3,643
    Location:
    florida.
    similar, but the difference is that a clueless tesla owner isn't licensed and obliged to laws, regulations, best practices, a licensed electrician that does a poor install is not only dangerous and inept, he is in possible violations of law.
     
    • Like x 1
  9. widodh

    widodh Model S 85kWh

    Joined:
    Jan 23, 2011
    Messages:
    5,099
    Location:
    Middelburg, The Netherlands
    They know that they need to install breakers, use the right cabling and such. But then configuring the device is a new thing.

    The lights turn on, the proper electrical protection is there, but the configuration lacks. The installation is however safe.

    There is always a single page in the manual to tell electricians what IP rating it has, how high it needs to be from the ground, max current, etc, etc.
     
  10. scaesare

    scaesare Active Member

    Joined:
    Mar 14, 2013
    Messages:
    4,944
    Location:
    NoVA
    Good job going to the extra effort of getting them configured correctly...
     
  11. TonyWilliams

    TonyWilliams Active Member

    Joined:
    Jun 11, 2012
    Messages:
    1,285
    Location:
    San Diego - Tesla powered Rav4 EV
    The installation is not safe if the amperage is not set at the correct value. We have received several dozen of these units, and they were all pre-set to 80 A. If the unit were installed on a less than 100 amp breaker and/or used with wiring that's not capable of handling 80 A continuously, there could have been popped up breakers, overheated wires, or a fire.

    They got lucky by having the reverse situation... fully capable wiring but set to a lower value.

    I don't recommend arbitrarily motoring around the world with a T20 security TORX driver, arbitrarily setting units to 80 A. There might be a reason why it set at the lower value. At a minimum, get permission from the authorized agent in control of that unit (hotel manager, etc) before doing anything.

    "D" is the setting for 80 amps, and "F" is a slave. Yes, you could really screw it up if you didn't know that two units were slaved on the same circuit. This might result in fire, injury or death.
     

Share This Page