Mar 14, 2020
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Hey all.

Have a client who’s LED downlights keep breaking after 6 months or so. I didn’t put them in originally.

I looked the details on the lights and the transformers and they don’t seem to match. But I can’t find anything to match the light as the input current is 300ma and voltage is 85-265V AC. Could anyone help me out finding the right match. Picture of old transformer and light are attached.

I was wondering if they even need a transformer and could go straight into 230v but wouldn’t dare since not even close to sure.

Thank you very much
 
TL;DR
Need correct transformer for light in picture.

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Those are mains voltage LEDs and have built in drivers.
I thought this too.
I found the LED lights online though and they are pictured with transformers even though it states the same input voltage as the one in the picture.


Just feel worried about taking out the transformers when I believe they come with the original order
 
They are constant current LED fittings that need a constant current driver to match (ie 300mA) The voltage stated is the input voltage range to the driver to ensure a 300mA output, not the voltage to the actual light fitting.

Are the drivers overheating in insulation? I would normally overpower the driver (say 15w for a 12w lamp!).
 
  • Agree
Reactions: davesparks
They are constant current LED fittings that need a constant current driver to match (ie 300mA) The voltage stated is the input voltage range to the driver to ensure a 300mA output, not the voltage to the actual light fitting.

Are the drivers overheating in insulation? I would normally overpower the driver (say 15w for a 12w lamp!).
 
They are constant current LED fittings that need a constant current driver to match (ie 300mA) The voltage stated is the input voltage range to the driver to ensure a 300mA output, not the voltage to the actual light fitting.
Are the drivers overheating in insulation? I would normally overpower the driver (say 15w for a 12w lamp!).
Thank you

That definitely makes more sense. We are sure that the voltage stated on the light fitting is definitely not for the light fitting though? 😅

Not in insulation. But yeah 12w light for a 8-12w transformer could be the issue.
 

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london
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?
Practising Electrician (Qualified - Domestic or Commercial etc)

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Help! Which LED driver do I need
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