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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
    The wording of 531.3.3 Note 1;

    "NOTE 1: For RCD Type A, tripping is achieved for residual pulsating direct currents superimposed on a smooth direct current up to 6 mA."

    (and the other notes) could be read that either just the smooth component of the residual current could be up to 6mA or that the combined smooth and pulsating components will trip a 30mA RCD when the total peak residual DC current exceeds 6mA.

    If the former, then i assume the RCD will trip when a DC pulse peak exceeds 30mA in a 30mA RCD. What would happen if the smooth DC component is 7mA?

    If the latter then why 6mA? It seems very low. Perhaps the type A is blinded? 


    These questions were probably answered in John and Graham's recent webinar which i haven't had a chance to see yet, apologies if so.
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  • 0
    The wording of 531.3.3 Note 1;

    "NOTE 1: For RCD Type A, tripping is achieved for residual pulsating direct currents superimposed on a smooth direct current up to 6 mA."

    (and the other notes) could be read that either just the smooth component of the residual current could be up to 6mA or that the combined smooth and pulsating components will trip a 30mA RCD when the total peak residual DC current exceeds 6mA.

    If the former, then i assume the RCD will trip when a DC pulse peak exceeds 30mA in a 30mA RCD. What would happen if the smooth DC component is 7mA?

    If the latter then why 6mA? It seems very low. Perhaps the type A is blinded? 


    These questions were probably answered in John and Graham's recent webinar which i haven't had a chance to see yet, apologies if so.
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