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Type A rcd . EICR coding ? etc

aligarjon
Hi Guys.   Not been on for a long time, just had a bit of a search and couldn't really find anything so thought i would ask and see what you all thought.


1.  Are we or will we be coding type AC rcd's if there are LED's or induction hobs, lots of electronics  etc  present.

2. How much DC leakage does it actually take to saturate an rcd and cause  problem?

3. How much does a standard LED lamp or induction hob  leak ?

If we test an AC RCD with no load and it's fine then re-test it with all LED lights, induction hobs etc turned on and it operates correctly could we then say that it is ok with a note on EICR  OR EIC if installing any of the above.  


Obviously also on an EICR if the RCD then doesn't operate with it all on it becomes a C2 ?


Any thoughts



Gary
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  • 0
    davezawadi (David Stone):

    Very well, Gentlemen, the boiler manufacturer cannot be bothered to correctly fuse his appliance, expects there to be faults in his electronics, safety coverings, etc. and so we must fit a type A RCD.


    Selectivity springs to mind here.


    The manufacturer's instructions apparently (according to earlier post) say that where an RCD is required for additional protection ... not protection.



    I guess the poor manufacturer can't win? Some people ask "How on earth can I tell which RCD to use?" - yet others berate them for helping out and clearly stating that?

     



    I think it would be reasonable for someone to describe what fault exactly could require a type A RCD.

     

    BS 7671 does exactly that - see Figure A53.1. Some of the faults would have to occur either downstream of electronics shown, or as a result of an N-E fault (simply because single-phase systems are "single-ended" transmission systems with respect to Earth) - but they still happen.

     


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  • 0
    davezawadi (David Stone):

    Very well, Gentlemen, the boiler manufacturer cannot be bothered to correctly fuse his appliance, expects there to be faults in his electronics, safety coverings, etc. and so we must fit a type A RCD.


    Selectivity springs to mind here.


    The manufacturer's instructions apparently (according to earlier post) say that where an RCD is required for additional protection ... not protection.



    I guess the poor manufacturer can't win? Some people ask "How on earth can I tell which RCD to use?" - yet others berate them for helping out and clearly stating that?

     



    I think it would be reasonable for someone to describe what fault exactly could require a type A RCD.

     

    BS 7671 does exactly that - see Figure A53.1. Some of the faults would have to occur either downstream of electronics shown, or as a result of an N-E fault (simply because single-phase systems are "single-ended" transmission systems with respect to Earth) - but they still happen.

     


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