downlights in soffets

[DennisLS]

I am intending to put downlights in the soffets . Taking power from the garage through a transformer to eight downlights , however, could someone please tell me can you "daisy chain" the lights. I am thinking of using 35w lights using one 300w transformer. I also want to incorporate a pir detector but still have the option to have the lights on constant.
would appreciate some advice as to the best way to do this

 

[ricicle]

Some points:-

8 x 35W @ 12V = approx 23A.So you need cable for that.

Check that your soffit is not asbestos!!!!

If the soffit is wood the downlights need to be rated for install in combustable material (can't remember the spec)

A PIR's switching contacts will possibly decline quicker switching a highly inductive load ie the transformer

 

[RF Lighting]

If the soffit is wood the downlights need to be rated for install in combustable material (can't remember the spec)

They need to carry the F-mark

 

[securespark]

Pah! Beat me to it!

 

[DennisLS]

The soffits are wood , do you think I should forget the pir idea?

 

[DennisLS]

I intended using 1.0 t&e cable

 

[securespark]

That does not follow common logic, captain. Why?

 

[DennisLS]

I'm only a subby but a quick leaner

 

[ricicle]

The soffits are wood , do you think I should forget the pir idea?

Depends on the switch rating of the PIR's contacts.These would need to be at least 2 amp inductive.Otherwise you could switch a relay but that becomes more involved.I suggest you look at the specs of some PIRs at your local wholesalers

 

[DennisLS]

bugger.....missed the "r" out of learner

 

[DennisLS]

thanks recicle will do that

 

[RF Lighting]

//www.diynot.com/forums/viewtopic.php?t=72368&view=previous

 

[DennisLS]

Thanks rf

 

[securespark]

I'm only a subby but a quick leaner

Yeah, I'm quick to lean as well, preferably against the nearest wall!

 

[DennisLS]

He laughs so much he knocks his tea over