Ceiling rose problem

[fireman22]

right well the other end of that black cable is up at the ceiling so get someone to operate the switch and you should see it come and go at the ceiling try each one in turn. you may have to touch the earths to get a better glow

 

[snaw]

I might have got that last part wrong, the black in the switch appears to glow whether it's on or off. Nothing on the ceiling on the two other blacks, when I touch the earth, whether or not the switch is on or off.

 

[fireman22]

did you say it is a dimmer switch

 

[snaw]

In the living room it is, not kitchen - the living room is connected up. Should I disconnect that switch for now?

 

[fireman22]

no leave living room. if you put your screwdriver in black wire terminal of kitchen wall switch does it glow at the same strength as the red if the switch is on or off

 

[snaw]

It apperas slightly weaker than red when it's switched off, about the same when it's on.

 

[fireman22]

just check that where the black cable goes into the terminal the screw has tightened onto the copper and not the black sheath.

 

[fireman22]

where you saw the glow get weaker and brighter at the switch, if it is connected right in the switch you should see that weaker and brighter glow up at the ceiling on one of the balcks

 

[snaw]

OK loosened and redone.

 

[fireman22]

can you find the black at the ceiling that glows brighter when switch is on

 

[snaw]

Sorry - don't see any glow at all on the other two celing blacks, when I touch the earth.

 

[fireman22]

but does the one with a glow get weaker / brighter when the switch is operated?

 

[snaw]

If I don't touch an earth one of the two blacks changes glow between off/on (Other is constantly same). When i touch an earth neither glows.

 

[fireman22]

hang on there are three blacks at ceiling ? yes?

 

[snaw]

Yep.