Security light wiring

[dantheram]

Firstly hello all,

Secondly i'm not a spark just after some DIY advice so go easy :wink_smile:

I'm trying to wire in an outside light with PIR.

inside the house i have this set-up -

Switched FCU - - - -WALL - - - - PIR light
(3core) (3core)

I would like the SFCU to turn the light on permanently in on position and to PIR activation in the off position. If this is too hard to achieve, or requires another switch adding i will just buy a PIR light with the pulse permanent on function.

P.S. light spur can be isolated by removal of fuse from another FCU further back, feed side.

let know your thoughts, thanks.

Dan

 

[Geordie Spark]

start with your FCU. from there feed a bog standard light switch. from this switch you need a 3 core/E to the PIR light. brown in common with the L from FCU. black in L1. N's in a connector Blue from FCU to grey of 3core, sleeved blue). then at the fitting, brown to Lin. black to Lout ( connected to light internally) , grey ( sleeved blue) to N in. connect cpcs to earth terminals.

edit: sleeve the blacks with a bit of brown sleeve or tape.

That'll be the apprentice then??? :clown:

 

[dantheram]

connector block is fine as long as it's accessible, which it is if in the switch housing. and how i described it, you only neeed a 1 way switch. if you already have a 2 way, use common and L1.

Surely a 2 way is needed? L1 perm live, L2 switched live. I need the light switch to toggle between live to PIR and switched live to turn on the light permanently.

 

[itselectric]

If you use the 2way switch method then every time you switch over to bypass the pir, you will isolate the pir, then when you switch back to pir the light will stay on for a preset time ,as if just powering up.
If you use 1way method, then after switching to pir is should just go straight into auto mode and not come on unless pir sensesmovement

 

[telectrix]

no. you need an unswitched feed to the PIR permanently on. otherwise, every time you turn the PIR supply on, the light will activate. the only switch to the PIR Lin should be the switch on the FCU so you can isolate if required.

- - - Updated - - -

beaten to it.

 

[dantheram]

no. you need an unswitched feed to the PIR permanently on. otherwise, every time you turn the PIR supply on, the light will activate. the only switch to the PIR Lin should be the switch on the FCU so you can isolate if required.

- - - Updated - - -

beaten to it.

Entirely see your point now. Thanks very much for your help.

Dan

 

[dantheram]

L1 here is the slave for a second light. So it's on the live side of the lamp, therefore, feeding my switched live to this connection will give me perm on, correct?

 

[telectrix]

N,E, and L are your permanent feed, direct from the outgoing side od the FCU ( 5A fuse ). your switch L goes to L1 to switch the light on manually. to do this you will need a 4 core flex. 1.0mm will be adequate for 2 x 500watt lights. you then feed 2nd light ( if required - L1,N, E. that's assuming the fitting will accept 2 cables. some won't.)