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Q & A: bulb and power supply watts

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Most recent answer: 11/09/2016
Q:
Hi.I just wanted to know if i could connect a 55W halogen bulb to a standard 10W bulb power supply? both are 12v. I'm just not sure if the wattage will be a problem.
- Gerrit (age 26)
South Africa
A:

It doesn't sound like it would work. The 10W supply can only put out a little less than an amp (10/12), but at 12V the bulb drws over 4 amps (55/12). So either the bulb won't light up or the power supply will get fried.

Mike W.


(published on 11/09/2016)

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