Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 4 replies
  • Subscribers 18 subscribers
  • Views 1356 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Three Phase Power Supply in the Home to Fast Charge Electric Vehicles - Safety Precautions to be Considered

John Beirne

For speed of charging an electric vehicle, homeowners are considering to install a three-phase power supply to charge their car up to 22Kw instead of up to 7Kw on single phase.  If this was the case, are there any safety precautions that need to be considered, by the homeowner, assuming that a power company would be supplying and connecting the three-phase power supply to a high-power electric vehicle charger?

  • 0

    Hi, the wires should be in the ground and insulated to prevent short and fire. There is nothing to fear beyond (just know that the work will be by professionals trained by a qualified body). Good luck

  • 0 in reply to Benyamin Davodian

    Benjamin, thank you for your reply.  However, are you aware if there is a transformer that could provide a similar power output?  John

  • 0

    Why do you need a transformer? there would not normally be one -  the car itself takes in either 1 phase at more or less 7kW, or 3 of them at more or less 7kW each to make the not quite 22kW the marketing folk like to claim. I'm not aware of a common car standard for 22kW from a single phase.

    The 'charger' that goes on the wall is just an automatic switch and some electronics to detect that a car is plugged in and switch the mains on, or that it is fully charged or unplugged and to switch off - there is no transforming going on.

    Mike.

  • 0 in reply to John Beirne

    Hi how are you ?

    charging is the result of a charging station with low electrical power (about 3.5 kilowatts) while fast charging is possible when the charging station has a higher electrical power (on the range between 7 and 22 kilowatts).

    All electric vehicles can be charged with slow and fast charging but not in all cars the connection to the same position.

    When it comes to slow or fast charging, the connections in electric vehicles are divided into two groups:

    Cars with a type 1 connection or type J1772.
    Cars with a type 2 connection (type 2) which is sometimes called Mennekes.
    The differences are in the form of the connection itself (think of the difference between a European socket and an American socket, for example) and in geography: for the most part, cars manufactured in the Far East and the United States have a Type 1 connection, while European vehicles have a Type 2 connection.

    A type 1 connection looks like this:

    A type 2 connection looks like this:

Community Rules & Guidelines