Bathroom light - old wiring to new

[Tuharax]

I have old wiring in my bathroom.
It has two black wires and one red. Also some exposed wire which seems to be coming from the two black wire sleeves


I want to fit a new light. From my understand i have brown = live yellow = earth blue = neutral. Which wires do i put where. On the old light brown goes to one of the blacks and blue to the other. So i can assume the black with the current blue is neutral? Then I would assume i wire the red wires into my new brown? However, on the old light the brown goes into the other black, and the red doesnt seem to connect anywhere. If i put the red into my new brown. What do i then do with the black thats left it cant be earth can it? Maybe there is no earth. Also what about the other copper looking wires.

I am guessing this maybe down to switching or something. I know the light switch that runs the bathroom light is a double switch and the landing light can be switched from the landing switch and a switch at the bottom of the stairs. However, the bathroom light doesnt have two switches - just one.

 

[LastManOnline]

I have old wiring in my bathroom.
It has two black wires and one red. Also some exposed wire which seems to be coming from the two black wire sleeves
View attachment 63895View attachment 63894

I want to fit a new light. From my understand i have brown = live yellow = earth blue = neutral. Which wires do i put where. On the old light brown goes to one of the blacks and blue to the other. So i can assume the black with the current blue is neutral? Then I would assume i wire the red wires into my new brown? However, on the old light the brown goes into the other black, and the red doesnt seem to connect anywhere. If i put the red into my new brown. What do i then do with the black thats left it cant be earth can it? Maybe there is no earth. Also what about the other copper looking wires.

I am guessing this maybe down to switching or something. I know the light switch that runs the bathroom light is a double switch and the landing light can be switched from the landing switch and a switch at the bottom of the stairs. However, the bathroom light doesnt have two switches - just one.

View attachment 63893

First, I am assuming that the "old" light was working OK until you decided to replace it. With that established we can then conclude that the red cables are in fact permanent live wires that simply need to be left in a connector on their own as they currently are.
Put a little tape or something on the black wire connected to the brown on the "old" light. This will be your switched live and will be connected to the brown on your new light. The other black wire goes to the blue on your new light.
It would appear the "old" light was a type of recessed fitting. This means you have plenty of room to fit a junction box on the 3 T&E cables. The "exposed" wires are in fact earth wires which should be sleeved, but as they are already twisted together I would advise you tape them up in green/yellow earth tape and check their connector screws.
You can then connect a little fkex(brown blue, green/yellow) to the junction box conne tors on one end and onto the new light fitting on the other. Finally, and I, m sure you won't need the reminder but make sure the power is off before you proceed

 

[Dave OCD]

It looks like the existing light is incorrectly connected, the live should connect to the single black [the switched live which should be marked with red sleeve in accordance with those wiring colours] and the neutral should connect to the two blacks which are the looped neutrals.

 

[LastManOnline]

It looks like the existing light is incorrectly connected, the live should connect to the single black [the switched live which should be marked with red sleeve in accordance with those wiring colours] and the neutral should connect to the two blacks which are the looped neutrals.

Well spotted

 

[Tuharax]

First, I am assuming that the "old" light was working OK until you decided to replace it. With that established we can then conclude that the red cables are in fact permanent live wires that simply need to be left in a connector on their own as they currently are.
Put a little tape or something on the black wire connected to the brown on the "old" light. This will be your switched live and will be connected to the brown on your new light. The other black wire goes to the blue on your new light.
It would appear the "old" light was a type of recessed fitting. This means you have plenty of room to fit a junction box on the 3 T&E cables. The "exposed" wires are in fact earth wires which should be sleeved, but as they are already twisted together I would advise you tape them up in green/yellow earth tape and check their connector screws.
You can then connect a little fkex(brown blue, green/yellow) to the junction box conne tors on one end and onto the new light fitting on the other. Finally, and I, m sure you won't need the reminder but make sure the power is off before you proceed

Thanks. Yes the light was working ok
1) I get all of that. So I remove the yellow wire from the new connector box. This allows me to put the red wire into the middle slow on its own
2) Tape black wire connected to old brown. Remove from old connector box and connect it to the new connector in the brown slot
3)Remove other black wire and put it into blue on new box
4) The light fitting comes from the loft so lots of room. What do you mean by ' fit a junction box on the 3 T&E cables'
5) Exposed wires I can tape. There is no connector screw they weren't connected to or touching anything.
6) You can then connect a little fkex(brown blue, green/yellow) to the junction box conne tors on one end and onto the new light fitting on the other. Not sure what this means
7) If i remove the new yellow earth to allow for the red what do i do with this wire?

 

[westward10]

I think you need an electrician. Whilst the forum will help DIYers within reason your posts suggest this will verge on step by step guidance to which there is no guarantee you will do it safely.

 

[Dave OCD]

For Gods sake stop right now and please call in an electrician. What you're suggesting with the permanent live red cores will make the whole fitting live and most likely kill you or someone else.
No offence intended but I think you're out of your depth with this.

 

[Tuharax]

For Gods sake stop right now and please call in an electrician. What you're suggesting with the permanent live red cores will make the whole fitting live and most likely kill you or someone else.
No offence intended but I think you're out of your depth with this.

Fair enough. One is coming tomorrow to quote for some other work anyway so I will ask him. Slightly concerned now Ive got a light thats been in my bathroom for years which is wired incorrectly and live...

 

[PEG]

Hi,if you have a spark visiting,then it is a wise decision to have maybe 30 minutes of his time,to sort things out,
Although in truth,the positioning and tightening of half a dozen wires,is not rocket science.... the assessing of existing arrangements ,and any previous or required safety functions,does warrant specific knowledge.

Unfortunately,the casting of advice,without actual hands-on electrical access,can be problematic.

The three areas where we worry the most,after advice is offered,are

1) It works - but something is still not correct...

2) You get a belt,and get away with a cautionary tale,for your mates,and

3) .....i don't want to mention ?

 

[Tuharax]

Hi,if you have a spark visiting,then it is a wise decision to have maybe 30 minutes of his time,to sort things out,
Although in truth,the positioning and tightening of half a dozen wires,is not rocket science.... the assessing of existing arrangements ,and any previous or required safety functions,does warrant specific knowledge.

Unfortunately,the casting of advice,without actual hands-on electrical access,can be problematic.

The three areas where we worry the most,after advice is offered,are

1) It works - but something is still not correct...

2) You get a belt,and get away with a cautionary tale,for your mates,and

3) .....i don't want to mention ?

I agree. He’s been and he says
2 blacks together go into my new connector into the blue neutral
Single black (should brown sleeve it)- into new brown
The copper I need to sleeve and connect to yellow on my new connector.
The old red leave in old connector as they are.

 

[littlespark]

I agree. He’s been and he says
2 blacks together go into my new connector into the blue neutral
Single black (should brown sleeve it)- into new brown
The copper I need to sleeve and connect to yellow on my new connector.
The old red leave in old connector as they are.

Spot on, but I would add sleeve the bare earths in green/yellow.

I’m sure the visiting electrician also mentioned it, and it’s been stated earlier in the thread, the reds together are permanent live.... it won’t go off when the switch is off. Isolate at your consumer unit.

 

[Tuharax]

Spot on, but I would add sleeve the bare earths in green/yellow.

I’m sure the visiting electrician also mentioned it, and it’s been stated earlier in the thread, the reds together are permanent live.... it won’t go off when the switch is off. Isolate at your consumer unit.

The consumer unit is a whole other story ? it’s from 1940 and has asbestos fuses. That’s the job he’s quoting for to come and replace the unit and make it safe.

 

[littlespark]

Any chance of a photo? The forum in general loves a good pic of old stuff in use

 

[telectrix]

and post what he's quoting to fit and how much. we could then advise if he's giving you a good deal. if it's a written quote redact personal details and post it.

 

[Mike Johnson]

Not withstanding any of the advice already given, it looks as though you have lichen growing on the cables, in which case you have a damp problem, borne out by the green copper contamination, this needs addressing.