LED Bulb Installation

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Peter Turner

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I have replaced conventional bulbs on 2 circuits with LEDS, and have also replaced the 2-gang dimmer switch to one that is suitable for use with LEDs; this switch is rated 5W to 150W.

One circuit now has 5 x 5W 240V LEDs (candle units), and works perfectly.

The second circuit has 6 x 3W 12V LEDs (MR16 bulbs); when the dimmer switch is switched on, the LEDs flash once .  .  . and then nothing !

Is this :-

-        A compatibility issue between the MR16 LEDs and the dimmer switch ?

-        An issue with the 12V supply and the dimmer switch ?

Something else ?

 
The 12 volt lamps have a transformer unit, which if it was for incandescents will not work with LEDs

You need an LED driver instead, and you need it to be compatible with your dimmer.

 
dimmers and LED are 2 things that don't work togther - I would loe the dimmer if you don't use it much. If you use it a lot, then don't convert to LED.

 
The second circuit has 6 x 3W 12V LEDs (MR16 bulbs); when the dimmer switch is switched on, the LEDs flash once .  .  . and then nothing !

Is this :-

-        A compatibility issue between the MR16 LEDs and the dimmer switch ?

-        An issue with the 12V supply and the dimmer switch ?

Something else ?
You realise MR16 is the size of the lamps in eights of an inch don't you?

So replace your lamps with 240v MR16 dimmable LEDs usually with a GU10 base and get rid of the 12V power supplies. There are no advantages of using 12V with LEDs.

 
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