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Recommendations for home electricians to install 220v wiring in garage

  • September 17, 2019 8:33 PM
    Reply # 7885862 on 7236192

    Here's 2 pictures that give you an idea why you should de-rate your wire.  The first is #6 wire in conduit running to my HPWC drawing a modest 40A (#6 is rated for 55A).  The second is the Tesla connector cord flowing the same 40A.  The conduit isn't warm to the touch, but it definitely is warmer than the background.  The rubber cord to the car was actually warm, but not in any way hot.  Both photos taken with a FLIR camera.

  • September 17, 2019 8:21 PM
    Reply # 7885845 on 7236192

    Wow, where to start?  Let's start here...

    1.  A 40A breaker is too large for #10 wire, which is only rated to carry 30A max.

    2. Did anyone read the manual?  It calls for only 3 conductors, not the 4 you stated (10/3 has 4-#10 wires).

    3. With that long a run they should have de-rated the wire.  I ran 80' of 6/2 Romex (rated at 55A), and de-rated it to 75% to carry 40A (Though I did install a 50A breaker).

    4. You've set your charge rate to 32A... that's already more than the #10 wire is rated for to begin with.

    5. If you wanted to move to 48A charging, you'd need #4 wire.

    6. I can see why that Company was cheaper!

  • April 02, 2019 11:51 AM
    Reply # 7257170 on 7236192

    Thanks all for the responses. They were very helpful in my project execution. 

    I obtained quotes from 3 electricians (Mike Williams, Nichols Electric). Both were very thorough and experienced in installing EV Charging setups. 

    I decided to try a local electrician (RocTech Solutions). While they didn't have prior experience in EV Charger setup, they were able to complete the work at a much lower rate.

    The work included:

    • Consolidating the existing circuit breakers to make room for a new 40A breaker.
    • Running a 50 foot 10/3 wire from the panel in the basement to the garage.
    • Mounting the Tesla Wall Connector to the wall (mounting wood block provided by me), and 
    • Connecting the wiring to the wall connector.  

    In order to prepare for this setup I watched some YouTube videos on DIY Tesla Wall Connector.

    • I also read the installation manual and watched the installation video on Tesla website. Attaching links here for those interested.
      • https://www.tesla.com/sites/default/files/downloads/wall_connector_installation_manual_80A_en_US.pdf?201612081439
      • https://www.tesla.com/support/installation-tesla-wall-connector
      • https://www.youtube.com/watch?v=sWPgGFyuBbk
      • https://www.youtube.com/watch?v=UMKiwyWikNs

    This research allowed me to configure the connector switch to the appropriate amp setting and ensure a smooth process.

    I also contemplated moving up to 48A charging, which would have required a 60A breaker, but my service panel is fairly old and is at capacity (100A); so the additional amps would have required me to upgrade my panel. Staying at 32A allowed me to keep my existing panel while offering faster charging (32mph instead of 5mph on standard outlet!). 

    Thank you again, community, for your support. Look forward to connecting with you at the next club event. 

  • March 21, 2019 9:27 PM
    Reply # 7239269 on 7236192

    Manish,

    My total cost was $1025.  ($500 Tesla wall connector 24' cord) and $525 for the 240 VAC drop to the garage.

    I did the hook up.

    Job: Run 240VAC line in conduit from basement  150 Amp breaker box 30 feet to attached garage.

    Supply 60 Amp breaker , wire and conduit

    Provide L1  L2 and ground for TESLA wall connector.

    Add 60 Amp circuit breaker to main service panel

    Vendor.  Nichols Electrical..Henrietta

    Electrician cost total:  $525.  3 hrs

    Result. Can charge at 48 Amps (roughly 43 miles per hour)


    Last modified: March 21, 2019 10:21 PM | Richard Settembre
  • March 21, 2019 8:08 AM
    Reply # 7237801 on 7236192

    A couple of years back I had a problem free wall connector installed by Mike Williams (http://www.williamselectric.net/) in my garage into my existing 150 amp breaker panel for around $1000.  He was very responsive, professional and did a complete job including getting the permit.  

  • March 21, 2019 8:02 AM
    Reply # 7237780 on 7236192

    I'm having a 14-30P outlet installed in my garage today. Cost me about $375 for the outlet, 30' of wire, and a new 30A breaker. I'm going with D&D Electric - https://www.danddelectricny.com/

    They will also install the wall charger if you want to go that route.

    Last modified: March 21, 2019 9:59 AM | Joe Moore (Administrator)
  • March 20, 2019 10:11 AM
    Message # 7236192

    Hi -  I would like to install a wall connector in my garage, and would like to hear other members' experience with getting the wiring/installation done (e.g. who did you hire for the work / how much did it cost / what was your experience like). 

    Thanks! 

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