How to wire a ceiling rose (the bulb flashes) (Ed.)

[MUNEEB]

I had the electrician came about 2 year ago who messed up our wiring basically the light bulb directly outside the light bulb blinks all the time therefore we have removed the bulb, now I thought to look into this over a long weekend so please if someone can help me to resolve this issue. What he did to the pull switch wiring Put the BLACK wire in COM, 2 REDS goes into COM2 and BLUE goes into the BLACK Wire which is really short and cant pull it more. YELLOW wire was left outside I have tried to put the YELLOW wire in COM, 2 RED wires in L2 , BLUE & BLACK wire in L1 but it blinks and also left the BLACK wire. I have attached the picture.

 

[SUNRAY]

I had the electrician came about 2 year ago who messed up our wiring basically the light bulb directly outside the light bulb blinks all the time therefore we have removed the bulb, now I thought to look into this over a long weekend so please if someone can help me to resolve this issue. What he did to the pull switch wiring Put the BLACK wire in COM, 2 REDS goes into COM2 and BLUE goes into the BLACK Wire which is really short and cant pull it more. YELLOW wire was left outside I have tried to put the YELLOW wire in COM, 2 RED wires in L2 , BLUE & BLACK wire in L1 but it blinks and also left the BLACK wire. I have attached the picture.

No picture

 

[Murdochcat]

No photo.

Is the bulb a LED bulb

 

[MUNEEB]

Hi yes its a LED BULB

 

[Murdochcat]

Hi yes its a LED BULB

Have you got a halogen you could try in the fitting?

 

[MUNEEB]

Tried Halogen its blinks occasionally

 

[FrodoOne]

I had the electrician came about 2 year ago who messed up our wiring basically the light bulb directly outside the light bulb blinks all the time therefore we have removed the bulb, now I thought to look into this over a long weekend so please if someone can help me to resolve this issue. What he did to the pull switch wiring Put the BLACK wire in COM, 2 REDS goes into COM2 and BLUE goes into the BLACK Wire which is really short and cant pull it more. YELLOW wire was left outside I have tried to put the YELLOW wire in COM, 2 RED wires in L2 , BLUE & BLACK wire in L1 but it blinks and also left the BLACK wire. I have attached the picture.

(The above is hard to read
AND
you are referring to a Pull-Switch, NOT a Ceiling-Rose!
My attempt to "unscramble" this is below - together with some "comments".)

What he did to the pull switch wiring
the BLACK wire in COM,
2 REDS goes into COM2 (What is COM2 ?)
and
BLUE goes into the BLACK Wire which is really short and cant pull it more.
(The Blue wire is an extension of some other wire [probably BLACK] - see Picture 2. You can use a longer piece of "extension" conductor.))
YELLOW wire was left outside

I have tried to put the YELLOW wire in COM, (Why)
2 RED wires in L2 ,
BLUE & BLACK wire in L1
but it blinks and
also left the BLACK wire. (What does that mean? "Left" the Black (and Blue) Conductor in COM?)
I have attached the picture.

(So, the pictures you have attached are after your efforts ?
There is some evidence of "overheating" near the now unused terminal in Picture 1)

You have two cables coming in from the ceiling.
Cable 1 (which may be White) has Red, Black, Yellow and Earth conductors.
Cable 2 (Grey) has Red, Unknown (extended in Blue), Green (?!?!?) and Earth conductors. (Unusual, to say the least !)

One must ask
Is there another Switch which is associated with this Pull Switch?
Is there a Photo Sensor associated with this Pull Switch?

What are the colours of the Cable(s) and Wires which reach the Light Fitting?

If you have only ONE Switch an ONE Light, the wiring should be as shown in the following,
except that there will be only the ONE "IN" Cable.

Loop at Switch Lighting Circuits

UK lighting circuit wiring details for loop at the switch

flameport.com

Two-Way wiring is shown in
https://flameport.com/electric/lighting_circuits/lighting_switchwires_twoway.cs4
and

Two way switched lighting circuits #2

Wiring details for two way UK lighting circuits, alternate connection option

flameport.com

 

[MUNEEB]

Hi thankyou so much for taking time to reply, I'm new here and not posted anything before its the wiring of PULL SWITCH in bathroom no other switches or sensors are associated to this bathroom Pull switch. No Photo sensor associated with this Pull switch.
All lights work fine except 1 which is directly outside bathroom and within 1 metre of this Pull Switch(When I connect 2 RED WIRES in L1 and 1 BLACK WIRE in COM by leaving YELLOW WIRE outside and by connecting BLUE WIRE with very short BLACK WIRE) currently working.
I have WHITE (OLD STYLE) wire with 3 wires RED, BLUE & YELLOW coming out from downstairs(behind the pull switch) then I have RED & BLACK wire and 1 BLACK wire which is very short behind the pull switch.
I have also checked behind the actual bulb wiring which looks fine 1 BLACK wire on left, 2 BLACK wires on right and 2 red wires in middle for loop.
We have 1 Light directly outside bathroom (1 metre from this pull switch) then 1 bedroom to the right and 1 bedroom to the left all get supply through these wires.
Before this mess up(which meant to be an installation of new RCD BOX and IP44rated bathroom light) everything was working perfectly then a so called electrician turned up and left us without upstairs light for 1 day. Now the light which is directly outside the bathroom Blinks therefore we have removed the bulb but rest of the upstairs lights work fine. I hope I have now explained clearly.

 

[FrodoOne]

its the wiring of PULL SWITCH in bathroom no other switches or sensors are associated to this bathroom Pull switch. No Photo sensor associated with this Pull switch.
All lights work fine except 1 which is directly outside bathroom and within 1 metre of this Pull Switch

From this, it appears that a Pull-Switch IN the bathroom is controlling a Luminaire OUTSIDE the bathroom

When I connect 2 RED WIRES in L1 and 1 BLACK WIRE in COM by leaving YELLOW WIRE outside and by connecting BLUE WIRE with very short BLACK WIRE) currently working.

When you do the above, what?

I have WHITE (OLD STYLE) wire with 3 wires RED, BLUE & YELLOW coming out from downstairs(behind the pull switch) then I have RED & BLACK wire and 1 BLACK wire which is very short behind the pull switch.

No.
You may have " WHITE (OLD STYLE) cable with 3 Conductors (insulated) RED, BLUE & YELLOW coming out from downstairs (supplying the pull switch)" then
"a Cable with RED & BLACK insulated Conductors and 1 BLACK insulated Conductor, which is very short, behind the pull switch."

However, from what Cable does this "1 BLACK wire which is very short behind the pull switch." come.
(Extended in a BLUE insulated conductor - is it not?)

I have also checked behind the actual bulb wiring which looks fine 1 BLACK wire on left, 2 BLACK wires on right and 2 red wires in middle for loop.

(Again, no photo !)
You have also checked at the Ceiling Rose of the luminaire which looks fine, 1 BLACK wire on left, 2 BLACK wires on right and 2 red wires in middle for loop.

However, those numbers "Do Not Compute".
(Apart from the Earth, there MUST be an even number of conductors involved at any UK Ceiling Rose)
Line and Neutral IN. [possibly, a Line and Neutral OUT], Line and "Switched" Line to/from the Switch
and
"Switched" Line and Neutral to the Luminaire itself!

(See

)

We have 1 Light directly outside bathroom (1 metre from this pull switch) then 1 bedroom to the right and 1 bedroom to the left all get supply through these wires.
Before this mess up(which meant to be an installation of new RCD BOX and IP44rated bathroom light) everything was working perfectly then a so called electrician turned up and left us without upstairs light for 1 day. Now the light which is directly outside the bathroom Blinks therefore we have removed the bulb but rest of the upstairs lights work fine. I hope I have now explained clearly.

"We have 1 Light directly outside bathroom (1 metre from this pull switch) then 1 bedroom to the right and 1 bedroom to the left all get supply through these cables/conductors.
(Why a pull-switch in the bathroom activates a luminaire outside the bathroom I still cannot understand!)

Before this mess up (which meant to be an installation of new RCD [Residual Current Device] and IP44 rated bathroom light) everything was working perfectly.
Then a so called electrician turned up and left us without upstairs light for 1 day.
Now the light, which is directly outside the bathroom, Blinks.
Therefore we have removed the bulb but (the) rest of the upstairs lights work fine. "


You will need to get your (cheap) analog multi-meter (which you MUST have or you would not be doing any such work)
and
start checking the Line and Neutral SUPPLY voltages and the way in which they are connected to your switches and luminaires.

 

[sparkwright]

Send pictures of the wiring at the bathroom light, and perhaps the other rooms if it's easy.

Is there an extractor fan?

Where does the yellow wire go? It's not at the bathroom light, according to your description.

I would imagine the black/blue at the pull switch is NEUTRAL, and should be in a separate connector block, rather than connected directly to the switch.

 

[FrodoOne]

I would imagine the black/blue at the pull switch is NEUTRAL, and should be in a separate connector block, rather than connected directly to the switch.

Unless that "terminal" is a "Link Point (NOT connected to anything) !

If only we had
Close-Up pictures (or a good diagram) of the switch terminals - so we could see that which each was labeled.
and
the Make/Model Number of the switch.

 

[plugwash]

To me the OP's picture looks like a two way switching setup, with a red/black switch drop from the light and a red/blue/yellow set of strappers going to the other switch.

 

[FrodoOne]

After re-reading Posts #1 and Post #8, I suspect that
a. there IS a light in the Bathroom
b. this light is controlled by the Pull-Switch IN that bathroom
c. there is another light OUTSIDE the bathroom (within one meter of the pull switch - which is irrelevant), controlled by another switch (somewhere).
d. It is the light outside the Bathroom which "flickers".
e, The "flickering" started after an "electricians" work on the Bathroom Pull-Switch (and continues after MUNEEB's efforts)
f. There is 1 bedroom to the right and 1 bedroom to the left, supplied on the same circuit as the above two lights.

It has not been explained if the "flicker" is "regular"
OR
if the "flicker" is intermittent - which may indicate a loose connection.

If the "flickering" IS due to a loose connection in a Line or Neutral conductor coming
from the Pull-Switch
to the Ceiling-Rose of the "flickering lamp",
it indicates that this lamp is at the "end of the circuit".

This is also indicated by

I have also checked behind the actual bulb wiring which looks fine 1 BLACK wire on left, 2 BLACK wires on right and 2 red wires in middle for loop.

although those numbers "Do Not Compute".
(Apart from the Earth, there MUST be an even number of conductors involved at any UK Ceiling Rose)
Line and Neutral IN, Line and "Switched" Line to/from the Switch
and
"Switched" Line and Neutral to the Luminaire itself - in this case.)

A strong contender for any "Loose Connection" would be the screw connector connecting the BLUE (Neutral) wire,
which is shown in Picture 2 of Post #1.

There are two cables coming in from the ceiling at the Pull Switch:-
Cable 1 (which may be White) has Red, Black, Yellow and bare Earth conductors.
These will be the Line and Neutral coming in via the Bathroom Light Fitting
together with the Yellow "Switched" Line back to the Bathroom Light Fitting.

Cable 2 (Grey) has Red, Unknown (extended in Blue), Green (?!?!?) and bare Earth conductors. (Unusual, to say the least !)
[While I really cannot imagine what function is performed by this "Green" insulated conductor (apart from an insulated "Earth" conductor) it does not appear to be in use.]
Fairly obviously, the Red insulated conductor is the Line to the Ceiling Rose of the "flickering light"
and
the Blue insulated conductor is the Neutral to the Ceiling Rose of the "flickering light"
connected to the Black insulated conductor in that Cable
via a screw-connecter
which probably IS the site of any loose connection!

 

[SUNRAY]

I have made some guesses in decyphering this:

2 RED WIRES in L1 and 1 BLACK WIRE in COM by leaving YELLOW WIRE outside

Switch terminals are as shown in purple on the assumption the wires have not been moved around too much.

and by connecting BLUE WIRE with very short BLACK WIRE

I wonder if the short piece of dark blue extension of the single black may be a recent change and the light blue went into the connector block.

I have WHITE (OLD STYLE) wire with 3 wires RED, BLUE & YELLOW coming out from downstairs(behind the pull switch)

3C&E is 'loop-out' to next light.

then I have RED & BLACK wire and 1 BLACK wire which is very short behind the pull switch.

T&E is standard switch drop with an additional single black which would tally with;

I have also checked behind the actual bulb wiring which looks fine 1 BLACK wire on left, 2 BLACK wires on right and 2 red wires in middle for loop.

Bathroom light has conventional loop arrangement.


If those guesses are correct then my suggestion for the electricians wiring follows.

It is also feasible the 3C&E is/was the feed to an extractor fan with the yellow into 'COM' with black. As the 3C&E is described as 'coming out from downstairs' it is also possible it's the 'loop-in' ie the other way round to this suggestion:

Thoughts please.

 

[MUNEEB]

Thanks for all your help I will give it a go and get back to you, your illustration is very clear and much appreciated