what is 20 lumens equivalent in watts
1125893
According to the Wikipedia entry on 'Incandescent light bulb': "The luminous efficacy of a typical incandescent bulb is 16 lumens per watt, compared to the 60 lm/W of a compact fluorescent bulb."That would mean 20 lumens is about the same as a 1.25 watt incandescent bulb -- slightly less than 1/3 the light of a 4watt small incandescent nightlight. That's the theory anyway...
1125894
Not sure. But this light has a fairly bright white light that illuminates the hallway or path very well.
1125895
According to the Wikipedia entry on 'Incandescent light bulb': "The luminous efficacy of a typical incandescent bulb is 16 lumens per watt, compared to the 60 lm/W of a compact fluorescent bulb." That would mean 20 lumens is about the same as a 1.25 watt incandescent bulb -- slightly less than 1/3 the light of a 4watt small incandescent nightlight. That's the theory anyway...
29198
I've read somewhere they output 1200 Lumens with power at 22 W. More or less it compares with a 75W incandescent according to some charts. This doesn't take efficiency into account. I'd say a bit more than 75 after having had those for about a year. HTH.
1909305
The halogen equivalent of a 50W Led spotlight varies according to whom you consult-- anywhere from 250W equivalent to as much as 500W equivalent! Again, this is compared to outdoor-type halogen spotlights.
613561
250 lum. These are great bulbs! I have ordered 20 of them so far for my Class A motorhome and enclosed motorcycle trailer! So much brighter!
1455750
Yes that is right. Because of the lumens it guves. Dont get confuse with watts..its the lumens equivalency.
883421
As I read the package 60 wattts is the energy required by the buld to give the light equivalent of a regular 100 watt bulb.
1624938
up to 100W. I have a 60W bulb in it, and that's about bright enough for me.
1092324
It is equivalent to about 150 watts incandescent but with a much whiter light so it will seem to be brighter.
1454626
It is fairly bright I'd estimate 40W or 60W equivalent. The light is not as warm as I was hoping for though. It is more daylight than warm.
1588500
Yes..20 watts per. It's super bright..perfect for a hallway or any small area that you want to brighten, and add a little glam. It's gorg!
602793
That's right in the description: 150 watts LED / CFL, 600 watts incandescent. Just add the power requirements of all the bulbs controlled by the dimmer. For example, I'm using it to control 4 60 watt incandescent bulbs, total 240 watts. For LEDs / CFLs, use the actual power required, not the "equivalency". So a 23-watt CFL that says it's as bright as a 100 watt incandescent still only counts as 23 watts.
1821794
I used the Watts to Lumens Calculator: http://www.rapidtables.com/calc/light/watt-to-lumen-calculator.htm These bulbs are 5.9W x 15 lm/W (Tungsten Incandescent Light Bulb) = 88.5 lm
1881232
The Luminous Intensity for this kind of light is around 90-100Lm/W. Then you can calculate the output lumens as the wattage you need.
1397327
In general for 12V LED bulbs, multiply the wattage by 8 to get the equivalent incandescent wattage. In this case, 5 X 8 = 40W equivalent. Since a 60W incandescent gives 840 lumens, this bulb should yield 560 lumens. Keep in mind that only the upper hemisphere glows, so if used in a table lamp, most of the light goes to the ceiling. If you ceiling mount it, you get full benefit of the light.
1221824
http://earthled.com/products/feit-performanceled-a21-3-way-omni-directional-22-watts-600-1100-1600-lumens-30-70-100-watt-equal
1735028
It appears to me that the importer is a bit remiss in dealing with the details. In addition to the discrepancy in brightness, he also lists two different wattage ratings. I suspect that he is now selling the 20-watt version of this light, vs. the older 18-watt version, and simply botched the ratings. (1650-lumens)/(18-watts) = 91.7-lumens/watt(1950-lumens)/(20-watts) = 97.5-lumens/wattBoth of these figures are VERY efficient, and replace fluorescent tubes VERY well.
1483852
DLJ, I've been running mine for quite sometime. They replaced 12v 4w incandescent bulbs and here is what I can say about these. The lumens is close to a 4w, the color is slightly cooler but still warm that people can't tell it's LED. The match up very nicely to 20w equivalent LED spotlights I put on the same system. And the beauty, not one bulb has gone out yet, running daily on a dusk timer for. 4, 6, or 8 hours depending on daylight season.