1. 

   The Happy Builder Screwfix Select

   There was a X2 test, a 60 mA to test, ensure that the TT disconnection was met with the RCD tripping in 0.15 seconds (150 mS) in the blue book, but the table 3A in Appendix 3 was deleted when the brown book was published.
   
   You assume the real life fault current will be more than 30 mA and the RCD will trip faster than when tested.
   
   https://electrical.theiet.org/wirin...nges-to-rcd-testing-in-bs-76712018plusa22022/

    

   The Happy Builder, Jul 13, 2024

   #61
2. 

   bigfranky145 Member

   I'd got the idea it might have been needed as someone I know had one in their garage.
   
   I guess I know better now!

    

   bigfranky145, Jul 18, 2024

   #62

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