Bulb voltage for under-cabinet lighting?


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Old 07-03-15, 08:22 PM
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Bulb voltage for under-cabinet lighting?

Apologies if this is a dumb question. I just bought a home and it has under-cabinet puck lights. They seem to be wired to a standard wall switch. The bulbs installed are bi-pin halogen, and say "4g 12v 20w".

They seem to work fine but I was under the impression I would need 110/120v AC bulbs for lights installed on home wiring. (I thought 12v bulbs were for RVs, etc.) Is there anything wrong/dangerous with continuing to use the 12v bulbs on a 120v household circuit?

I'd like to try replacing these with LED bulbs (the halogens get VERY hot), but can't seem to find any G4 bulbs that are 120v AC - they are all 12v. Can I use these, since there are currently 12v halogens installed that seem to work?
 
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Old 07-03-15, 10:57 PM
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12 volts is correct for most under cabinet lights.
Is there anything wrong/dangerous with continuing to use the 12v bulbs on a 120v household circuit?
The lights are not on a 120 volt circuit. They are on a 12 volt transformer on a 120 volt circuit. Depending on the transformer LEDs may work but with reduced life span. Best to replace the transformer with an LED driver.
 

Last edited by ray2047; 07-03-15 at 11:12 PM.
 

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