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 Post subject: Wiring issue
PostPosted: Sat Jul 28, 2018 7:57 pm 
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I have a wiring issue. Problem 2 gang 2way switch in hall controls hall light (hall works fine) and landing light. The issue is I can turn the landing light on and off from the hall no problem, when landing light is turned on from the hall I can go upstairs and turn the landing light on and off ok from upstairs. However if I turn the landing light off from the hall the landing light cannot be turned on from upstairs. I have shown a pic of the hall 2gang switch and how it is currently wired.
Help please!


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 Post subject: Re: Wiring issue
PostPosted: Sat Jul 28, 2018 8:57 pm 
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How long has it been like this?
Have you touched it?
Has some one else touched it?
What does the other switch and terminals look like?

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 Post subject: Re: Wiring issue
PostPosted: Sat Jul 28, 2018 9:00 pm 
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Always since I moved in 2 years ago but now getting on my nerves.
No one touched the landing switch is 1 gang 3 terminal


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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 5:07 pm 
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:welcomeuhm:

Without significant rewiring you are stuck with what you have.

The switch in the pic has only one live feed, this is actually a "switched live" from the upstairs switch, you then have a "bridging live" from one side of the switch to the other, effectively only when the upstairs and downstairs switches are in the correct positions does this "bridging live" actually become live.

I hope that makes (some) sense.

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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 7:14 pm 
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wine~o wrote:
Without significant rewiring you are stuck with what you have.

The switch in the pic has only one live feed, this is actually a "switched live" from the upstairs switch, you then have a "bridging live" from one side of the switch to the other, effectively only when the upstairs and downstairs switches are in the correct positions does this "bridging live" actually become live.


Sorry to disagree.

The picture is not clear enough to show what is going on, however it is not unusual to have a bridge in a lighting circuit.

A clearer picture is needed.


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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 7:28 pm 
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OnlyMe wrote:
Sorry to disagree.

The picture is not clear enough to show what is going on, however it is not unusual to have a bridge in a lighting circuit.

A clearer picture is needed.


Whilst we trust OnlyMe as the resident expert, may I point out that in addition to the bridge there are three red wires and only one black. T&E cable of that age is one of each, that's why we need the bigger picture.

I recently came across, in one of my properties, a two-way circuit (which should have, at that pre-harmonised time, used red/blue/yellow 3+E) that had been set up with two lengths of r/b t&e with one core of one twin unused.

(In addition it was joined/connected at the rose! My solution, rip out & start again.)


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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 7:40 pm 
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OnlyMe wrote:
wine~o wrote:
Without significant rewiring you are stuck with what you have.

The switch in the pic has only one live feed, this is actually a "switched live" from the upstairs switch, you then have a "bridging live" from one side of the switch to the other, effectively only when the upstairs and downstairs switches are in the correct positions does this "bridging live" actually become live.


Sorry to disagree.

.


Feel free to disagree. I often disagree with myself. :help:

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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 7:46 pm 
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arco_iris wrote:
OnlyMe wrote:
Sorry to disagree.

The picture is not clear enough to show what is going on, however it is not unusual to have a bridge in a lighting circuit.

A clearer picture is needed.


Whilst we trust OnlyMe as the resident expert, may I point out that in addition to the bridge there are three red wires and only one black. T&E cable of that age is one of each, that's why we need the bigger picture.

I recently came across, in one of my properties, a two-way circuit (which should have, at that pre-harmonised time, used red/blue/yellow 3+E) that had been set up with two lengths of r/b t&e with one core of one twin unused.

(In addition it was joined/connected at the rose! My solution, rip out & start again.)


Ever heard of singles cables?


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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 8:43 pm 
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OnlyMe wrote:
Ever heard of singles cables?


Not by that term, do you mean t&e with outer cores the same (never seen or come across red/red, know you can get brown/brown but not seen an electrician use it). Or single core cable to be used inside conduit/trunking (as I often have, myself)?

Unlikely to be found in OP's residential property? :dunno:


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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 8:53 pm 
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arco_iris wrote:
OnlyMe wrote:
Ever heard of singles cables?


Not by that term, do you mean t&e with outer cores the same (never seen or come across red/red, know you can get brown/brown but not seen an electrician use it). Or single core cable to be used inside conduit/trunking (as I often have, myself)?

Unlikely to be found in OP's residential property? :dunno:


Single core double sheathed cable, either with or without cpc.

Very commonly used in lighting circuit in the past.


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 Post subject: Re: Wiring issue
PostPosted: Mon Jul 30, 2018 9:05 pm 
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Did it have grey outer, like the pic.?

Does the pictured grey outer have two cores?

Per previous, needs more pictures, doesn't it.


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