On Sun, 27 Jan 2019 20:15:55 +0000, ARW
wrote:

On 27/01/2019 19:48, Archibald Tarquin Blenkinsopp wrote:
On Sun, 27 Jan 2019 19:36:25 +0000, ARW
wrote:

On 27/01/2019 19:20, Archibald Tarquin Blenkinsopp wrote:
On Sun, 27 Jan 2019 19:09:45 +0000, ARW
wrote:

On 27/01/2019 11:13, Archibald Tarquin Blenkinsopp wrote:
On Sun, 27 Jan 2019 10:55:03 -0000, "Brian Gaff"
wrote:

Also of course if you get it wrong the cb will ping and there are not that
many choices to try. I know it sounds daft but one has to have fun and you
have also proved the cb works as well!

Brian

Er! The cables look like nothing I have seen in a 2 Way switch
arrangement.

But they look like 50% of the thousands of two way switches I have seen.

RGB?


Ones exposure to domestic wiring is a trifle limited, but I have not
come across those colours in a home before.

Whatever the colour, cables do not just "drop out".



RYB.

I did not watch them on TV.

I stand corrected. Apologies, although I must admit I saw the insides
of a lot more TV sets than light switches :-)

What happens if the phases are switched, does the room go darker in
the daytime?


It's single phase. There is no phase to switch/short circuit to.

Single phase is brown and blue.

Three phase is brown black and grey, or in old money RYB

If on an RYB connected motor, I switch to RBY, then the motor runs the
other way.

Logic suggests that with RYB cables, motors can be made to run
backwards, vacuum cleaners will blow, fridges will heat food and light
bulbs will emit dark instead of sucking it.


AB