In article ,
John Rumm wrote:
On 01/02/2021 10:28, Chris Green wrote:
John Rumm wrote:
On 01/02/2021 09:36, Harry Bloomfield wrote:
John Rumm formulated on Sunday :
I did try some experiments a while back to see if I could trick it
into giving a false reading. I could not get a false negative out of
it, but did manage one false positive - although had to try hard!

http://wiki.diyfaq.org.uk/index.php/...ck_experiments

They are the best thing since sliced bread, if you thoroughly understand
fully their limitations.

I find the "beep" facility quite handy at times - plomp it down close to
a circuit you want to turn off, go to (typically unlabelled) CU, and
turn off MCBs until the bleeping stops!

As I have changed and updated the wiring in our house I have labelled
everything as I go. After 20 years of living here it now means just
about everything is labelled. I have even put little stickers on the
top edge of sockets to indicate which MCB/RCD feeds them.

Yup good move - you quite often see that in commercial setups - each
socket indicating what circuit/phase/CU its on etc.

Possibly overkill in domestic so long as all the sockets are when you
would expect them to be according to the main CU labels. (e.g. if a
"Downstairs Sockets" label on a MCB accurately identifies everything
that is controlled by it without exceptions).

yesterday I ordered some narrow tape so I could label an 'out of area'
socket.



--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle