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Regulation stating a type AC RCD can not be upstream from a type A RCD

Alan B

Hi

I found an EV charger today with built in type A RCD + RDC-DD connected to a type AC RCD in the consumer unit, the AC RCD is also protecting 3 other circuits including sockets. I know this is incorrect because the type AC RCD could be blinded by DC currents, but I am struggling to find a regulation to reference when providing information to the customer?

Thanks

Alan

Parents
  • 0

    If Type A RCDs have been generally installed for longer on Mainland Europe, but only on circuits with appliances known to have issues with DC leakage, does the new UK requirements to have them on far more circuits mean there’s problems that are not being dealt with in the rest of Europe?

    I was under the impression that the German regs had moved over to minimum A-type RCDs quite a while ago - the French might be a little behind (or Legrand's website might not be entirely up-to-date). There's still no single European standard, but lots of (differing) national ones, often with different lifecycles.  I guess we're all playing catch-up to some extend with this problem with UK neither in the lead or lagging too far behind, but in the middle of the pack somewhere.

       - Andy.

  • 0 in reply to AJJewsbury

    A nice blatant advert here.......

    https://www.youtube.com/watch?v=y-ULC3U0jb0

    Z.

  • 0 in reply to Zoomup

    And here it is that B type RCBO device  at CEF for £500, not cheap,  the same weight in solid silver would be half the price !!

    link

    Oh and the silver price in kg for comparison

    Mike.

  • 0 in reply to mapj1

    CEF are notorious round here for inflated prices and often over charge or bump up numbers on your order…. Apparently the branch managers get a commission on sales so that says it all really. I found a B type RCD recently for £50. Could be worse 

  • 0 in reply to IronFreely

    could you name the brand ? That is very cheap

    Mike,

Reply Children
  • 0 in reply to mapj1

    I believe it was called Tord4. I chose not to buy it on as I’d never heard of it before! Opted for a charger with built in RDCDD and A type RCD, supplied via MCB for fault protection and SWA for additional protection. 

  • 0 in reply to IronFreely

    Thanks this one    costing this much ?  Given the Alibaba price of $37 plus shipping I can imagine £50 from an online store and a bit more from a real shop is about right. I have not used Wenzhou Tongou Electrical Co either, so in my book they'd have to rank beside Chint and a few others as not very familiar, use with caution, but that does not mean they are automatically bad, but unproven.

    Mike

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