Outside spotlight Instalation

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Thanks for reply’s, here goes I’m going to get 3 recessed down lights, each pointing down the brick coloums at the front, and going to get a dusk till dawn sensor. I’d like to have a switch but not sure if there would be enough room to replace 2way switch with 3way switch, would it be a tight fit? If that’s the case and it’s to tight I’m just going to run a cable from existing switch. I will post a couple of photos of wiring etc once done 👍🏻

Would replacing a 2gang to 3gang be to tight?

 
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Here’s a few pics of switch, would the blacks not be neutral? 

ADD40212-4A15-417F-97CE-DBEBDBD8076F.jpeg

AE8084DD-A4AF-4CDB-95D9-378709745BF7.jpeg

 
If the existing switch is a single gang wall switch, just convert it to a double gang wall switch. take a 3core &E from the switch position to the sensor, then a T&E on from the sensor to the light fitting.

All neutrals connected through.

All earths connected through.

Permanent live supply from switch connected to perm live input at sensor.

Switched live from switch connected to switched output of sensor, then also onward to the live input at light.

So if switch OFF and sensor not operated light will be OFF.

and if switch OFF and sensor operated light will be ON.

and if switch ON and sensor not operated light will be ON.

and if switch ON  and sensor operated light will be ON.

Doc H.
I’d quite like a separate single gang switch only to work the outside lights and not be mixed up in a 3gang with toilet and hall light.

Could I take a 3core&E 1.5mm from existing 2gang

Put it into 1gang switch inside at door 

Run 3core&E 1.0mm from 1gang to sensor

Then run T&E 1.0mm to new lights

would that work? 

 
You would only need a T&E from switch to new switch, you are only transferring the perm live, neutral and earth across. From there you’ll want your 3c+e to sensor then twin to light. 

 
You would only need a T&E from switch to new switch, you are only transferring the perm live, neutral and earth across. From there you’ll want your 3c+e to sensor then twin to light. 
Thanks mate, is an override switch just the same as a 1gang 1way switch? And are all the blacks in the term block on my pic the neutrals? And would any of those cable runs be 1.5mm or all just 1.0mm 👍🏻 Thanks for the reply 

 
Switch yes, I am making the assumption that the blacks are neutrals, without confirmed testing then I can’t be 100%,  and 1.0mm would be fine throughout. 
Thank you 👍🏻

Will let you know how I get on

 
Last question lol, Just to double check this is the type of switch I need to link from my existing switch? 👍🏻

 
Hey Paul my new found mate what is your profession just incase I need a favour?

perm live - comm

switch live (black sleeved brown) - L1

neutral (grey sleeved blue) - to neutral in original switch

earth (sleeved green/yellow) to - E

now if you ask for the connections at the other end .................

 
Hey Paul my new found mate what is your profession just incase I need a favour?

perm live - comm

switch live (black sleeved brown) - L1

neutral (grey sleeved blue) - to neutral in original switch

earth (sleeved green/yellow) to - E

now if you ask for the connections at the other end .................
LoL

So the 3core gets used at the original switch, but the 1gang 1way (new switch) only has com, L1 and E?

Obv

com-com

switch-L1

E-E

N-?

 
Noooooo, 

read back the thread then come back. 


Sorry got mixed up, atm I’ve a 2gang2wayswitch

(Existing)

I take a twin @ E from existing switch to new 1way1gang linking the L N E across

Then I carry across 3core&E from 1gang to the sensor, 

Live to sensor live

switch to sensor switch

neutral to sensor neutral

E to E

At the 1gang going to sensor 3core & E

Live to com

switch to ? 

Neutral to ? 

E to E

Then from sensor to lights T&E

Live to live

Neutral to neutral

E to E 

Is this correct mate? 

 
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