LED ceiling light wattage question

[novetan]

I hv a question on those domestic ceiling LED lights that can toggle between daylight, warm, and cool white.

Assuming it is stated 24W and it has 50 LED. On daylight mode-25 daylight LED will be lit. On warm mode-25 warm LED will be lit. On cool white-all 50 LED will be lit.

So for daylight or warm, does it mean it is only 12W and cool white is 24W, or daylight/warm is 24W and cool white is 48W. I get 2 differing answer fr salesman and some even don’t know.

One thing I noticed though, that coolwhite is not any significant brighter than daylight although all 50 LED are lit, as against 25.

 

[novetan]

no takers?

 

[DaveFromCampbelltown]

24 watts sounds really high. All my indoor LED lights are 5 ~ 8 ~ 11 watts. 11 watts is really bright.
My only outdoor LED is 15 watts.

Now, I would expect that of your 50 LEDs, 25 will be cool white, and 25 will be warm white. Daylight would be a mixture of both types.

As well, 24 watts still sounds really high. It may be that most of that is being used up in the circuitry to manage all 50 LEDs, and not that much would actually be coming out as light.

The only way to know for sure is to --

1. either get full technical specifications from the manufacturer, or
2. get a good light metre and a good volt/amp/power metre and measure what power is being used to generate particular light output.

 

[novetan]

24 watts sounds really high. All my indoor LED lights are 5 ~ 8 ~ 11 watts. 11 watts is really bright.
My only outdoor LED is 15 watts.

Now, I would expect that of your 50 LEDs, 25 will be cool white, and 25 will be warm white. Daylight would be a mixture of both types.

As well, 24 watts still sounds really high. It may be that most of that is being used up in the circuitry to manage all 50 LEDs, and not that much would actually be coming out as light.

The only way to know for sure is to --

1. either get full technical specifications from the manufacturer, or
2. get a good light metre and a good volt/amp/power metre and measure what power is being used to generate particular light output.

Actually day is 25, warm is 25, cool is 50. Thought this the normal case.

Understd that using a light meter would be most ideal. But I don't have.

Anyway, 24W is not abnormal. I hv seen 30+ watt lamps. Those lights with fan attached are normally comes in 20W. Maybe I'm living in 3rd world?