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WHAT WOULD YOU DO?

John Peckham
Today's job inspect and test a domestic installation in a sheltered housing flat. TN-C-S earthing system. Main protective bonding correct. 


Wet room for disabled occupant. Electric shower and extract fan supplied from a Wylex 2 way consumer unit  with BS EN 61008 30mA RCD main switch. Recently installed.


RCD does not trip on X1 RCD test but does trip on X 5 and operation of test button. RCD does not tip on a second and third test after X 5 test and operation of the test button.


Thinking about the Note to Regulation 643.8 are you content with this installation as there are no other observations recorded and prepared to issue a "Satisfactory" EICR?


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  • 0
    (Dear me * ?) - until this morning I had missed the full horror and true significance of the rather open ended phrase 'or higher' in that note.


    It does actually  imply that even if it only just opens on the last ditch big red button 25A two wire loop test, then that may  be taken as indicating the RCD is OK, and no further RCD testing is required.  Given that quite a few 6A MCBs and RCBOs open on that test if you do it L-N as well, its not that great a test of the RCD function, is it ? Still it means the cowboys can check all ratings of RCD with the same test ?


    Further tests at 30mA or whatever and then getting the thing  changed is of course the right thing to do.?


    (* those who know me well enough can mentally substitute the phrase that I might have used;  but the automatic profanity  check would have rejected )

Reply
  • 0
    (Dear me * ?) - until this morning I had missed the full horror and true significance of the rather open ended phrase 'or higher' in that note.


    It does actually  imply that even if it only just opens on the last ditch big red button 25A two wire loop test, then that may  be taken as indicating the RCD is OK, and no further RCD testing is required.  Given that quite a few 6A MCBs and RCBOs open on that test if you do it L-N as well, its not that great a test of the RCD function, is it ? Still it means the cowboys can check all ratings of RCD with the same test ?


    Further tests at 30mA or whatever and then getting the thing  changed is of course the right thing to do.?


    (* those who know me well enough can mentally substitute the phrase that I might have used;  but the automatic profanity  check would have rejected )

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