Power taken From a light switch help.

[SparkieBusiness]

Hi all
In fitting a garden security light and want to start the install from a light switch.

I am looking to change the existing 1 gang internal light switch to a 2 gang.
The second I want to switch the security light on/off.

I am aware that I can take the power from the 1st internal light switch nut not sure on how this is wired between the 2?? Could anyone help? Ive seen this in other houses but my mind had gone blank!!

Many thanks.

Tyrone

 

[somersetsparks]

Well you would need a Neutral at the switch, which most don't have.

 

[Deleted member 26818]

It's likely that there will only be a switch line at the switch.
You will need to take a feed (Line & Neutral) from the nearest light fitting, to your security light and then run a separate switch line to the switch.

 

[domestic spark]

You should only have line and a switch line. need a neutral which you will only be able to pick up from nearest light fitting

 

[sparks21]

Which should be from the same circuit!

 

[domestic spark]

of course, otherwise if connecting up to a dual rcd board and you have 2 rcds and if lighting circuits split, one on each side, you will get the problem of "borrowed neutrals" and your rcd will trip once a load is drawn on that circuit

 

[SPARTYKUS]

Tyrone

you may get lucky and find the switch has been 'fed' a neutral - it's still (not so common) practice; dependant on the application it can be the best plan sometimes. I have done it many a time.


Only way to find out is to test... I assume you have the equipment and knowledge to do this... ? If not, bite the bullet and get a sparky in

If I am teaching you to suck eggs apologies. But suspect not from question.

 

[SparkieBusiness]

Thanks for all your replies guys!
The solution of taking the three line from the ceiling rose to the security light, then to the switch was my initial idea but I Thought I had seen it originate from a switch.. Maybe not then! lol


Thanks!

Tyrone

 

[telectrix]

when you say security light, do you mean one with a PIR?

 

[SparkieBusiness]

Hi, no PIR, they are just wall mounted lights garden lights.
Sorry, I fitted a security light today and it must ahve been on my mind. lol

Cheers
Tyrone

 

[i=p/u]

just interlink your com to second gang, take from L1 to light and take neutral and cpc from differnt light hopefuly on same circuit

 

[Geordie Spark]

just interlink your com to second gang, take from L1 to light and take neutral and cpc from differnt light hopefuly on same circuit

Hopefully??!!!

 

[malcolmsanford]

Hi all
In fitting a garden security light and want to start the install from a light switch.

I am looking to change the existing 1 gang internal light switch to a 2 gang.
The second I want to switch the security light on/off.

I am aware that I can take the power from the 1st internal light switch nut not sure on how this is wired between the 2?? Could anyone help? Ive seen this in other houses but my mind had gone blank!!

Many thanks.

Tyrone

Just as an aside I assume you know that this work is notifiable under Part P