Candle power vs watts

[alimaj]

Hi can anyone say if there is a conversion factor for watts to candle power. I had cause to buy a 12v/ 20w bulb, but was a given a 35 candle power rated one and was advised it is the equivalent, can anyone advise. Thanks. alimaj.

 

[malcolmsanford]

Lol got that totally wrong edit

 

[Spoon]

Hope this helps. FAQ: How do I convert between candle power and watts?

 

[alimaj]

Hope this helps. FAQ: How do I convert between candle power and watts?

Hi thanks for the link, I had checked a number of conversion sources but none had a relationship, which the link says there is none. Thanks again.

 

[Marvo]

Watts is a measure of the power the lamp uses. Candle power is how much light the lamp gives. There is no direct relationship because a large portion of the power consumed makes heat not light.

 

[Mr.Si]

It's the same with Speakers and their WATTS v their dB ratings. Efficiency is key (or Efficacy in lighting?)

 

[j.mawer]

1 candle = 4 pi lumens
and for various bulb types you can look at the watt per lumen document that hillbillie posted

http://www.electriciansforums.net/e...egulations/24188-lumens-per-circuit-watt.html