Ceiling light only have one two core and earth cable

[garrincha]

Hello all

I am trying to replace a light and add a bathroom fan to the ceiling light. But when I removed the old light there is only one cable coming from the attic. I replaced the light in the same way that the older one was but I'm confused as there should be a switch wire going to the light switch. The light works fine when I pull the light switch cord. I replaced that cord and when I did it had a com cable and a l1 or l2 cable. So a total of two wires for that. The switch works. I looked in the attic for a junction box I thought maybe that's what it is i don't know. Anyways I want to add a fan to it I have installed the fan and I got a three core and earth cable which is have connected to a isolation switch located outside the bathroom near the ceiling but I now want to connect that to the light so that it comes on whenever I pull the light cord. I have Included a pic of what I saw when I removed the old light you can see its only 3 wires live neutral and earth. Any help would be appreciated thank you.

 

[westward10]

Can you show the pull cord switch wiring.

 

[Highresdis]

Must be a junction box somewhere. Should be able to find it by tracing from the switch or the light. Hopefully you'll find it has a permanent live, switch live and neutral, so that can be wired to the isolator. The manufacturers instructions may also demand a fuse spur, which can be installed before the light.

 

[westward10]

Must be a junction box somewhere. Should be able to find it by tracing from the switch or the light. Hopefully you'll find it has a permanent live, switch live and neutral, so that can be wired to the isolator. The manufacturers instructions may also demand a fuse spur, which can be installed before the light.

Not necessarily which is why I asked to see the pull switch wiring as his explanation is not clear.

 

[Pete999]

Hello all

I am trying to replace a light and add a bathroom fan to the ceiling light. But when I removed the old light there is only one cable coming from the attic. I replaced the light in the same way that the older one was but I'm confused as there should be a switch wire going to the light switch. The light works fine when I pull the light switch cord. I replaced that cord and when I did it had a com cable and a l1 or l2 cable. So a total of two wires for that. The switch works. I looked in the attic for a junction box I thought maybe that's what it is i don't know. Anyways I want to add a fan to it I have installed the fan and I got a three core and earth cable which is have connected to a isolation switch located outside the bathroom near the ceiling but I now want to connect that to the light so that it comes on whenever I pull the light cord. I have Included a pic of what I saw when I removed the old light you can see its only 3 wires live neutral and earth. Any help would be appreciated thank you.

View attachment 40503

Cable has been getting a bit warm in that fitting Mate.

 

[garrincha]

Cable has been getting a bit warm in that fitting Mate.

Yes I thought that the colour was off. It may be because that older light was one of those lights with a heating sort of thing on it (which I haven' seen before) so it was like a heater light. The bathroom didn't have a heater in it but I have since fitted a towel radiator in.

 

[garrincha]

Can you show the pull cord switch wiring.

OK I'll get a pic tomorrow when in back there. It was just 2 red wires in the pull cord. I put a piece of brown tape on the wire that went into the 'com' hole...

 

[garrincha]

Must be a junction box somewhere. Should be able to find it by tracing from the switch or the light. Hopefully you'll find it has a permanent live, switch live and neutral, so that can be wired to the isolator. The manufacturers instructions may also demand a fuse spur, which can be installed before the light.

Thank you for the reply. Yes I was thinking that there must be a junction box somewhere. I was thinking there must be something that pull cord and the light is joined to. Then I can fit in that stupid fan. But I thought I'd try it before I get an electrician in! I'll have a look again in the attic

 

[Des 56]

If you can get to the light and the pull cord and don't find a JB between them there resides any connections you desire

 

[Pete999]

Yes I thought that the colour was off. It may be because that older light was one of those lights with a heating sort of thing on it (which I haven' seen before) so it was like a heater light. The bathroom didn't have a heater in it but I have since fitted a towel radiator in.

It's probably down to the person that installed the fitting, left the heat sleeving off most fittings of this type are supplied with a few inches of heat resistant sleeving.