Would this work...?!

[Eddiesparks]

I am planning to have an external PIR powering 3 soffit LED light fittings.

Here's where it gets (mildly) interesting, client wants there to be two options, to have them permanently on or to have them just on the sensor.

The way I have first fixed this is... (CPC omitted for clarity) Perm L and N to switch, 2x DP switches - 1 load side of DP switch to PIR, 1 load side of DP switch straight to lights, switched live and neutral from PIR to lights also - all in T&E (maybe would've been easier in three core but runs were v short and I wanted to keep it simple!) so if you liven it up via the "always on" switch then it would liven up the switched live of the PIR - would it damage PIR at all?! God knows why and I doubted it would damage PIR but I've never done this specific thing before.

Thanks

 

[Brightspark2]

It won't damage it...

 

[Plonker 3]

Why not just use a 2 way switch? L2 to turn them on permanently, L3 turns over to the PIR all taken through a adaptable box with the connections in?

 

[Brightspark2]

You can parallel PIRS off by just looping them...so you would end up with the same scenario the switched live on when that PIR hasn't switched it...so no problems...

 

[telectrix]

Done it that way several times but used 3 core. Never had a problem.

 

[Brightspark2]

Why not just use a 2 way switch? L2 to turn them on permanently, L3 turns over to the PIR

Thought that myself...

 

[Andy78]

You could also use a PIR with a manual override function and just provide one switch wire to it.

 

[Eddiesparks]

Thanks a lot boys. Good to know. Yeah next time would use 3 core but first time doing something: Keep it simple !!

 

[Eddiesparks]

Why not just use a 2 way switch? L2 to turn them on permanently, L3 turns over to the PIR all taken through a adaptable box with the connections in?

Good idea mate but i like to use dp for outside lights.

 

[telectrix]

D/P switch for anytrhing outside is a good idea. ( Tel. chapter 3, vs 7. )