Any tips on wiring for a 240V charging station?
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Thread: Any tips on wiring for a 240V charging station?

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\r\n Default Any tips on wiring for a 240V charging station?\r\n

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\r\n I am currently dragging an extension cord across the driveway to charge my 2017 Volt at 120V. I have been working with an electrician to do something more permanent, bearing in mind that I will want to do 240V in the near future.
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\r\nAre there electrical code gotchas my electrician and I need to know? I was thinking of a 240V/30A dryer-type receptacle in some kind of weatherproof enclosure at the corner of my porch. I was going to make a wooden box big enough to house the receptacle and the charger.
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\r\nI tried to read the electrical code myself (NEC Article 625), but it\'s pretty tough reading. At least I know the driveway has adequate ventilation! (625 spends a lot time talking about ventilation)
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\r\nThank you. I\'m a new member of the forum, and my search queries didn\'t seem to find an old post that addresses this.
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\r\nCharles H.
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    \r\n I\'m not that familiar with the details of electrical code, but I remember reading that there aren\'t really approved outdoor 240V outlets, so the enclosure will be important. On the other hand, every modern RV park has dozens of NEMA 14-50 outlets outside in enclosures, so clearly there are well established solutions.
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    \nIf you\'re going to the expense of running an outside 240V, I would recommend a 14-50 as well. Because of RVs (and maybe Tesla a little,) it\'s turning into the 240V universal standard for the U.S. (to the extent that there is one.) That\'s what most pluggable 240V EVSEs have, and every Tesla ships with a UMC adapter for it. It\'s the most future proof option you can buy today.\r\n
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    \r\n If it\'s out in the weather, I would hard wire it. Save money on the plug, socket box etc. Find a level 2 EVSE with a nice long cord. You may only need a double pole 30amp breaker, a chunk of 10 gage wire, and the Level 2 EVSE of your choice.\r\n
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    \r\n Check with your local utility prior to paying for installation. Most utilities will supplement cost of 240v install if you get it approved prior to installation, and use a licensed electrician.\r\n
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    \r\n Go with appropriate wire (6 gauge) for 50 Amps. You can connect a 32 /40 Amp charger to a 50 Amp breaker.
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    \r\n If you can afford it, get a pedestal-style EVSE and hard-wire it. Weatherproof and has cable management.
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    \nThere are some threads on here about how various people got around having their EVSE out in the weather. I saw one where they put a hole in the house wall with the EVSE inside and the charge cable went through a 4" plastic pipe. Several have used a plastic tupperware-style tub with grommet holes.
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    \r\n Quote Originally Posted by saghost\r\n View Post\r\n
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    I\'m not that familiar with the details of electrical code, but I remember reading that there aren\'t really approved outdoor 240V outlets, so the enclosure will be important. On the other hand, every modern RV park has dozens of NEMA 14-50 outlets outside in enclosures, so clearly there are well established solutions.
    \n
    \nIf you\'re going to the expense of running an outside 240V, I would recommend a 14-50 as well. Because of RVs (and maybe Tesla a little,) it\'s turning into the 240V universal standard for the U.S. (to the extent that there is one.) That\'s what most pluggable 240V EVSEs have, and every Tesla ships with a UMC adapter for it. It\'s the most future proof option you can buy today.
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    \nBest way to go! I charge ours all the time in RV parks free using 110 or 220, both of which are available from the 14-50 RV type outlet. Four prongs L1/L2/Nuetral/Ground....\r\n
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    \r\n Quote Originally Posted by hallcp\r\n View Post\r\n
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    I have been working with an electrician to do something more permanent, bearing in mind that I will want to do 240V in the near future.
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    \nAre there electrical code gotchas my electrician and I need to know?
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    \nWhat kind of "electrician" are you working with that doesn\'t know the code? You\'ll get a lot of amateur advice on this site.\r\n
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    1. #1
      Join Date
      Apr 2017
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      Raleigh, NC
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      Default Any tips on wiring for a 240V charging station?

      I am currently dragging an extension cord across the driveway to charge my 2017 Volt at 120V. I have been working with an electrician to do something more permanent, bearing in mind that I will want to do 240V in the near future.

      Are there electrical code gotchas my electrician and I need to know? I was thinking of a 240V/30A dryer-type receptacle in some kind of weatherproof enclosure at the corner of my porch. I was going to make a wooden box big enough to house the receptacle and the charger.

      I tried to read the electrical code myself (NEC Article 625), but it's pretty tough reading. At least I know the driveway has adequate ventilation! (625 spends a lot time talking about ventilation)

      Thank you. I'm a new member of the forum, and my search queries didn't seem to find an old post that addresses this.

      Charles H.
      Raleigh, NC

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