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Who is responsible for non compliantbev install

Alan B

EICR on 3 year old house thats a rental property. C2 because ev charger is sharing an rcd with other circuits in a split load board.Complied with how many organisations interpreted the regulations at the time of design.

No.high integrity ways available, only practical solution is replace the board or additional board for the ev charge point. Could consider rebuilding the internals of the existing cu, but still time consuming and fairly expensive.

Just generally interested in how the as long as it complied at the time approach works.

Who is responsible for the costs?

Parents
  • 0

    Hi 

    Just to confirm that as Soarky Chip says my main concern about the shared rcd is 5mA from the EV plus 5mA of dc leakage from other circuits equals 10mA on the shared rcd, if its a type A it may not trip.

    Given that many houses now have ev chargers  induction Hobs  air con units etc this and higher can easily occur. I am fairly sure NAPIT would recommend C2 for this.

  • 0 in reply to Alan B

    Also it's becoming quite common practice to game the cheap energy tariff by having one car on a proper ev charger and  a second in a granny charger.

  • 0 in reply to Alan B

    There's a more simple concern ... BS 7671 has the requirement, because an EV might have a "leakage current" around 10 mA. This doesn't leave a lot more for other equipment before a 30 mA RCD might operate in unwanted situations.

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  • 0 in reply to Alan B

    There's a more simple concern ... BS 7671 has the requirement, because an EV might have a "leakage current" around 10 mA. This doesn't leave a lot more for other equipment before a 30 mA RCD might operate in unwanted situations.

Children
  • 0 in reply to gkenyon
    gkenyon said:
    an EV might have a "leakage current" around 10 mA.

    Oh, there be (small) dragons then!

    531.3.2 puts a limit of 30% of the rated residual current on RCDs - so if it might exceed 9mA we can't use a 30mA RCD at all - which puts us in an awkward position with 722.531.3.101...

      - Andy.

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