chris1983 Â Â 10 #1 Posted August 19, 2014 Hi I have recently changed the lighting in my bathroom from a single one to 3 12v separate down lights. I have run the 240 original main to a transformer to drop it to 12v. then the new 12v into a junction box which then leads to all 3 separate lights with a wire each. Â The lights come on but after around 5 minutes of being on the start to flash and go off but at a slow pace light its going into a safe mode. Â Any ideas? Share this post Link to post Share on other sites Share this content via...
butlers   224 #2 Posted August 19, 2014 Some,most 12v have a transfomer each. A overheating transformer has thermal cut out.. Wait to be corrected Share this post Link to post Share on other sites Share this content via...
dosxuk   10 #3 Posted August 19, 2014 What wattage is the transformer, and what wattage are your lamps? - you can't power 3x 50W lamps from a 60W transformer. Share this post Link to post Share on other sites Share this content via...
Obelix   11 #4 Posted August 19, 2014 I think your analysis sounds reasonable.  Take 2 of the bulbs out and see if that helps. If so you are probably overloading something. Share this post Link to post Share on other sites Share this content via...
Blast   10 #5 Posted August 19, 2014 If the 3 x lights and transformer came as a kit, then I'd be looking to return them as there could be a fault.  If you've specified the transformer yourself, have you bought one that's of sufficient capacity - as you lower the voltage from 230v to 12v, the current will increase.  Have you installed it in an appropriate location in the loft that gives free air flow around it - that may be adding to the problem if not?.  Are all the connections tight?  I'd tend to agree with butlers - sounds like an overload and thermal cut out. Share this post Link to post Share on other sites Share this content via...
chris1983 Â Â 10 #6 Posted August 19, 2014 hi I have 1 12v transformer and 3 12 v lights so what should I do get a bigger transformer? I have put the transformer screwed onto a beam so it has loads of ventilation. Â ---------- Post added 19-08-2014 at 20:29 ---------- Â this is the transformer I bought would I need one per light and use the junction box to transfer the 240v to each one or buy I different transformer? Â http://www.screwfix.com/p/halolite-low-voltage-electronic-transformer-20-60va/48058?_requestid=281023#_=p http://www.screwfix.com/p/halolite-low-voltage-electronic-transformer-20-60va/48058?_requestid=281023#_=p Share this post Link to post Share on other sites Share this content via...
dan2802 Â Â 53 #7 Posted August 20, 2014 One transformer per lamp chris1983. Your risking your life by attempting something like this yourself as you have created a fire hazzard. Get an electrician in to do this correctly for you. Wouldnt the price be worth your and your families life? Share this post Link to post Share on other sites Share this content via...