Three lights control

[Marty28k]

Hi All, I have a small situation, A = Outside light, B = Porch light, C = Inside Light. I would like to switch A + B together but not C, and then B + C together and not C. Is there a replay or something that would switch between two different control to achieve this ?

 

[James]

There is no simple solution to this.
Standard light switches will not provide the logic you are looking for.

Anything is possible though, it could be done with either a cheep Plc £100
Or it may be possible with some smart switches.

 

[Marty28k]

There is no simple solution to this.
Standard light switches will not provide the logic you are looking for.

Anything is possible though, it could be done with either a cheep Plc £100
Or it may be possible with some smart switches.

Thanks James, I should have given more detail, its not physical wall switches I’m looking for. The two switches are actually PIR sensors, and I have all wires from all lights and sensors coming into one junction. Will relays achieve this, DPDT maybe ? I need something that will accept a live from either two circuits, but then not pass it back into the other circuit.

 

[James]

It could be done with relays

You will need 1 per sensor
Only light B needs any logic, so you Only need a single pole relay for each sensor.

You need to be mindful of the loading and rating of relay contacts
This is probably beyond the scope of a DIY project, I would suggest you involve a local electrician.

Rcd and other circuit protection needs to be considered also.

 

[Timbo]

Quinetic switches and receivers.
Switches can be configured to receivers in any combination.
S1 can do A & B; S2, B & C; S3, A; S4, B; S5, C.
Or any combination you like.

 

[Marty28k]

It could be done with relays

You will need 1 per sensor
Only light B needs any logic, so you Only need a single pole relay for each sensor.

You need to be mindful of the loading and rating of relay contacts
This is probably beyond the scope of a DIY project, I would suggest you involve a local electrician.

Rcd and other circuit protection needs to be considered also.

Solid advice, many thank James!