coujin   10 #1 Posted September 14, 2018 Hi,  So i was doing some work on my house the other day as were trying to decide whether we should repair or replace our staircase.  After removing some of the trim it exposed some electrics which i was expecting to be there. However, this round metal casing this there and is currently wired up and for the life of me I can't work out what it is doing.  I did a little investigating and one of the pairs coming off it appears to run into our 3 gang light switch in the kitchen. I'm not sure if it serves a purpose for the lights or if its just running to there to complete a ring.  I've attached a picture just incase anyone else has came across this thing before or can shed some light on it.  My main aim is to understand what it is doing and whether we actually need it.  Thanks   https://i.imgur.com/no8F5uX.jpg[/img]"] Share this post Link to post Share on other sites Share this content via...
alchresearch   214 #2 Posted September 14, 2018 Optemla make lights:  http://optelma.com/standard Share this post Link to post Share on other sites Share this content via...
1960boy   10 #3 Posted September 14, 2018 i think it may be an alarm or horn,siren. I'm going on the centre screw which is adjustable. The kind of thing is on vehicle horns. Share this post Link to post Share on other sites Share this content via...
coujin   10 #4 Posted September 14, 2018 They do look like nice lights but i dont think its relevant to my post. Share this post Link to post Share on other sites Share this content via...
truman   10 #5 Posted September 14, 2018 Where do the 2 white connectors go? Share this post Link to post Share on other sites Share this content via...
coujin   10 #6 Posted September 14, 2018 Thats what i was thinking but no where else in the house has any kind of alarm system. I might try a take it off the wall to see if there are any product codes. Strange place to put it, boxed in under the stairs  ---------- Post added 14-09-2018 at 15:47 ----------  What two white connectors are going into a 12v mains wire. Just tried to trace them but i cant go any further without ripping the carpet up so I guess that bit will have to wait. Share this post Link to post Share on other sites Share this content via...
max   13 #7 Posted September 14, 2018 They do look like nice lights but i dont think its relevant to my post.  Given that the name on the label on the "thing" is Optelma I'd say that the response was very relevant.  I'd say it was some kind of transformer for a lighting system converting from 240v to 12v. Share this post Link to post Share on other sites Share this content via...
ianparkin   11 #8 Posted September 14, 2018 It’s an older style toroidal transformer supplying 12 v for a lighting system Share this post Link to post Share on other sites Share this content via...
petemcewan   27 #9 Posted September 14, 2018 (edited) I think Max and Ianparkin are right. The white sleeving is HellermannTyton White Fibreglass Cable Sleeve - Braided. There's 12v indicated on the two whie cables . It's louvred-for cooling purposes. There doesn't appear to be anything moving inside the unit.So, baba boom ! -12volt supply for some lighting.  Caution.Judging from the colours;there may be a 240 v single phase supply still pressent at the unit. Edited September 14, 2018 by petemcewan Share this post Link to post Share on other sites Share this content via...
Obelix   11 #10 Posted September 14, 2018 It's a toroidal transformer for lights - I have them myself. Probably got or had a string of halogen lamps off it Share this post Link to post Share on other sites Share this content via...