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Three years ago installed more than 30 recessed halogen 12V 50W lamps in the ceilings during renovations. Have since spent a large amount calling the electrician to change the transformers when this or that light fails. My question is: Can I trouble shoot the transformer problem myself (I'm unqualified) and make good any defect? also would you advise the correct methodology for changing the transformer.

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It was a mistake to install them in first place, now, if your transformer blows, that meant that it is overloaded!

primary solutionto the problem, without adding cost of re-wiring will be change globes (50w) to these of lower wattage, say 40w or even less and this will protect transformers from blowing up.

another solution will be to what is load on the transformer, it must be at least 20% greater than combined light supported. if it is not, then duiring power fluctuation it can, and will be burn out.

say, you have 30 lights and 3 switches, this meant that you have three circuits of say 10 lights. 10lights x 50w = 500wat!!! that is rather large and costly transformer, to avoid this prohibitive cost, solve problem otherways, buy 120watt or 150watt transformer and wire two globes to each. this will provide margin as well as enough supply to support your light.

please bear in mind that you are legally not allowed to touch anything what is connected to mains except changing the globe! you need to speak with elelctrician and come to solution in cooperation with eleloctrician.

if you find this advice useful, please do not hesitate to leave comment and vote for me, thanx!

Posted on Aug 02, 2010

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