Oct 31, 2021
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If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
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Trainee Electrician
Hi,

Been looking to replace a set of downlights that have seen better days. Been doing some checking of what's in place to see whether it's just a swap them out and come across something I wanted to ask about. Power at the fittings is 12v AC so I've looked in the loft and there is a transformer fitted which I assume is changing line voltage down to 12v for the old fittings. Is that assumption correct on the face of it. If that's enough to go on

When checking what I am looking to fit they have a transformer integrated into the fitting. As such before I waste time and money, will a 12v at the fitting supply be enough to power a 220-240v supply rated fitting with built in transformer. My gut feeling is no it won't work

I'm already thinking I will tap out and get a professional in but we struggle with availability round here for little jobs.

Thanks in advance.
 
No you would need to remove the existing 12V transformer from the circuit, and connect the downlights directly to the 230V supply.
 
Just to add that, as you would be modifying a lighting circuit, you would need to make sure that the circuit is protected by a 30mA RCD.
 
Just to add that, as you would be modifying a lighting circuit, you would need to make sure that the circuit is protected by a 30mA RCD.
That's what I expected. At which point I am tapping out as modifying circuits and that kind of stuff is outside my skillset. Dammit.

Thanks for taking the time to reply loz
 
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If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
United Kingdom
What type of forum member are you?
Trainee Electrician

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UK downlighter fittings
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Lighting Forum
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Tom York,
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