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RCD test 6 months

lyledunn

I was asked why the change to six months. To be honest, I couldn’t answer with confidence. I did hear that folk might be more inclined to test the RCD at  the twice yearly clock change. Can anyone point me to an authoritative explanation? 

Parents
  • 0

    GN3 A2 2022 says that "RCDs are only rated for a finite number of operations, carrying out frequent optional tests can shorten the product's life"

    it also says in bold "prior to these RCD tests, it is essential, for safety reasons, that the EFLI is tested to check the requirements are met"

    So a combination of less testing, and an aversion to the shock risk to ordinary persons. Note that the metal lid of the CU is often being held up by the other hand whilst the test is performed, which seems bad design to me.

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  • 0

    GN3 A2 2022 says that "RCDs are only rated for a finite number of operations, carrying out frequent optional tests can shorten the product's life"

    it also says in bold "prior to these RCD tests, it is essential, for safety reasons, that the EFLI is tested to check the requirements are met"

    So a combination of less testing, and an aversion to the shock risk to ordinary persons. Note that the metal lid of the CU is often being held up by the other hand whilst the test is performed, which seems bad design to me.

Children
  • 0 in reply to OlympusMons

    I was once informed by an industrial sparks that he`d been assured by "those who know" that an RCD need only work 6 times before it packed in to be compliant to standards. I reckoned it was a wholesaler myth of the +ve and -ve tests each of x 1/2, x1 and x5 mA testing.

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