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Installing NEMA 14-50 then upgrading to HPWC

Discussion in 'Supercharging & Charging Infrastructure' started by thatoneguy, Jun 22, 2016.

  1. thatoneguy

    thatoneguy Member

    Apr 28, 2016
    I'm pre-ordering a Model 3 and considering installing a charger now to take advantage of the federal EV infrastructure tax credit. I was wondering though is it possible to have a NEMA 14-50 outlet installed then upgrade that outlet at a later time to a HPWC?
  2. JPP

    JPP Active Member

    Feb 4, 2013
    SF Bay Area, CA
    You might look for a long detailed thread by FlasherZ on electrical infrastructure. If you are contemplating this, you will need to add 100A 240V service at your panel, pull the proper wire gauge, etc. You can install a NEMA 14-50R (and install the proper 50A breakers) now. Later, you can deinstall the NEMA 14-50R, install the Tesla WC, and install the proper 100A breakers.
  3. CmdrThor

    CmdrThor Active Member

    Jul 24, 2013
    Marietta, GA
    Do you have an EV that can plug into a NEMA 14-50 outlet now? If not you wouldn't qualify for the tax credit. It is pretty iffy whether NEMA 14-50 outlets qualify in the first place.

    Also you don't need to use wiring for 100A if you aren't planning on putting the WC on a 100A breaker. The Wall Connector supports 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, or 100 amp circuit breakers.
    • Informative x 2

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