Crabtree RCCB not tripping -help!

[Marcus Vaughan]

Hi all.

So the Crabtree old style in my hand failed the I delta n test (times 1). But passed the 5 times test.

So I have replaced it with the one in the board. Supposedly reconditioned - and that’s failing both tests but mechanical works.

I am wondering if I am missing something here with my testing.

I am testing through a socket outlet.

Anyone any ideas other than replace with new?

 

[Wilko]

Thanks for clarifying. I agree on their use as you've said, for what it's worth .