PIRs and switches working together

[elliot123]

Got something that has given me abit of brain fart, got a downstairs W/C client orginaly wanted a switch the room has 2 spots and a feature pendant so separate switch lines but they had an after thought of A PIR which I have taken two 3 cores from switch the PIR in ceiling now would I be correcting in think I need to switch the feed to the PIR at the switch not the switch line (switches are fed so have feed in feed out pendant s/l spots s/l) in my head I'm saying neutral to PIR connected to rest of neutrals then my switch lines on the black of the 3core then feeds into com at switch and my feed to PIR into l1 on the switch ?

 

[Darkwood]

Hi Elliot123 ..Im trying to follow your post but I getting lost, any chance you can draw out the existing circuit then show your intentions with the PIR?

Are you wanting the PIR to switch both spots and pendant on or just one set?
Do you have an existing Neutral at your switch?

 

[Richard Burns]

I echo Darkwood, however I think that although you have two switch lines you only have a single switch and all lights come on simultaneously.

I am not sure what functionality you want from the PIR but I assume it is to turn all the lights on when someone enters the room, thereby rendering the actual switch redundant, but still leaving it as an option to manually switch on the lights overriding the PIR, if required.

If all my assumptions are right then you would want something like this, i.e. wire the PIR switching in parallel with the manual switch.