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

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
  • You would think that 536.4.1.4 should cover it. In (ii) it mentions residual currents, which presumably includes DC currents. It's solution is a type S upstream. Something not quite right there.

Reply
  • You would think that 536.4.1.4 should cover it. In (ii) it mentions residual currents, which presumably includes DC currents. It's solution is a type S upstream. Something not quite right there.

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