UK Ceiling Rose Wiring for Existing Fan

[Jarigo1984]

Hi, I have an existing ceiling fan that I want to remove and replace with just a regular ceiling rose light. When I removed the rose, I found that the neutral has only one cable, so assumed this is the last light on the loop, but I'm confused as it appears that the S/L has two cables coming in and plenty of loop wires to indicate it isn't the last light on the loop. This is an old circuit, so naturally, I expected to find all sorts of bandaged up cables! I haven't been able to get in the loft to untangle and test the wires for S/L yet, just wanted to see if anyone has any knowledge of this setup as I was expecting two wires coming into neutral and one S/L not the other way round.

Can anyone help explain why this light fixture is wired up in such a way?.. IMG-8924 - https://ibb.co/f4Hmn8X

 

[Darkwood]

Is it on a 2 way switch?

 

[Jarigo1984]

Is it on a 2 way switch?

No, one way

 

[Jarigo1984]

Also to add further clarity, The switch for the light fixture is one way, single gang with one red wire to com and one black to L1 as you'd expect on this type of old setup

 

[Darkwood]

It is common to put the neutral in at one end of the lighting loop and the switch wire the other, this method is done for a few reasons, but mainly convenience and it reduces the number of cores in the initial fitting by shifting it to the other end of the lighting loop.

 

[SJD]

Are you sure the L & N connections to the light are not just the wrong way round? So the single black is in fact L? Quite common for these to be mixed up, one house I tested recently averaged about 50% the wrong way round, someone perhaps colour blind, or just didn't care.

 

[Jarigo1984]

Are you sure the L & N connections to the light are not just the wrong way round? So the single black is in fact L? Quite common for these to be mixed up, one house I tested recently averaged about 50% the wrong way round, someone perhaps colour blind, or just didn't care.

That's what I was thinking. As I mentioned I haven't tested the cables yet with multimeter, so once I've done that I'm hoping to find that this is the case and that the person who installed the fan just got it the wrong way round - knowing the previous owner took plenty of shortcuts in his time, I'm sure that it is likely the case, but just thought I'd check to see if anyone else had a similar setup. Thanks

 

[westward10]

Can you show a pic.

 

[Jarigo1984]

Can you show a pic.

IMG-8924 - https://ibb.co/f4Hmn8X

 

[westward10]

I would say @SJD is correct that that single black is the switch line return and the two blacks are neutrals. This would need verifying however.

 

[Jarigo1984]

I would say @SJD is correct that that single black is the switch line return and the two blacks are neutrals. This would need verifying however.

Thanks. I'll check the multimeter ?