The Natural Philosopher wrote:

Andy Burns wrote:

The Natural Philosopher wrote:

ARW wrote:

The small ones often do not have the functional earth fly lead.

No RCD/RCBOÂ* has a 'functional earth fly lead'.

The white lead here ...

...is not part of the trip function. No idea what its for, perhaps to
earth something in the switch...

https://www.youtube.com/watch?v=aCf2alTZkLU