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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
    Take care Lyle, the current you are considering to block the transformer is smooth DC. As Mike says only 6, 8 and 9 are possible problems, what a loop tester does is not any of these diagrams. The important thing to notice about these diagrams is that they depend on two problems to be dangerous, first a broken PE connection (or perhaps a TT installation) and a fault to connect the electronics to the Earthed exposed conductive part. It is not dangerous if the PE is in place even if the RCD doesn't trip, and in all these cases the CPD or an internal fuse should provide ADS. RCDs are not the only protection mechanism in most installations. TT installs are a rather special case, and only require a single fault to be dangerous, but that is always the case under many conditions anyway. In most installations RCDs provide "additional protection" only and are not the main form of fault protection and ADS, this is the CPD.
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  • 0
    Take care Lyle, the current you are considering to block the transformer is smooth DC. As Mike says only 6, 8 and 9 are possible problems, what a loop tester does is not any of these diagrams. The important thing to notice about these diagrams is that they depend on two problems to be dangerous, first a broken PE connection (or perhaps a TT installation) and a fault to connect the electronics to the Earthed exposed conductive part. It is not dangerous if the PE is in place even if the RCD doesn't trip, and in all these cases the CPD or an internal fuse should provide ADS. RCDs are not the only protection mechanism in most installations. TT installs are a rather special case, and only require a single fault to be dangerous, but that is always the case under many conditions anyway. In most installations RCDs provide "additional protection" only and are not the main form of fault protection and ADS, this is the CPD.
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