On 15/12/2020 19:43, Andy Burns wrote:
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
Blimey. so it's there to detect neutral earth current for if the neutral
is disconnected.


--
Religion is regarded by the common people as true, by the wise as
foolish, and by the rulers as useful.

(Seneca the Younger, 65 AD)