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RCD types

Farmboy
Regarding RCD types, AC, A, F, etc. Do these classification/types apply only to RCD's installed in CU's/DB's, or to RCD's incorporated in RCD sockets and fused connection units as well? A manufacturer is getting back to me about their products later in the week, and I'd like to have something to compare their answer to.


F
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    mapj1:

    or moot if we believe the reg writers really intended this, - but not a daft question to ask in any case .

    Most plug in RCDs for example are designed as AC type, but do still respond to lumpy DC (as A type) but need rather more of it to trip them.

     




    Which is along the lines of why I asked them that given that their new advertising states that their new range of RCD sockets and fused conn. units 'Continues to protect with lost neutral / pulsating DC earth fault'., are they stating that these new units are type A's (whereas a couple of years ago they stated their range were AC's, but oddly, now say that they think the type classification only applies to RCD's in cu's/db's). They also think they may have to pull their new advertising however as it may be misleading. I hope to know more from them by the end of the week.


    F

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  • 0

    mapj1:

    or moot if we believe the reg writers really intended this, - but not a daft question to ask in any case .

    Most plug in RCDs for example are designed as AC type, but do still respond to lumpy DC (as A type) but need rather more of it to trip them.

     




    Which is along the lines of why I asked them that given that their new advertising states that their new range of RCD sockets and fused conn. units 'Continues to protect with lost neutral / pulsating DC earth fault'., are they stating that these new units are type A's (whereas a couple of years ago they stated their range were AC's, but oddly, now say that they think the type classification only applies to RCD's in cu's/db's). They also think they may have to pull their new advertising however as it may be misleading. I hope to know more from them by the end of the week.


    F

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