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Try contacting a specialized electrical lighting contractor or lighting fixture store. They should have the formulas to determine this for you.

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βˆ™ 2015-07-15 21:17:29
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Q: How do you determine the correct wattage or lumens needed to properly light a given size room?
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What is power of the bulb?

The power of light bulbs are measured in wattage (watts) and/or lumens.


How many lumens in 65 watt CFL?

CFL's have 60-70 lumens per watt. So for a 65watt bulb, you'd take between 60-70 lumens and multiply that by the wattage. So 60lumensx65Watts=3900 & 70x65=4550 meaning a 65watt CFL will put out anywhere between 3900-4550 lumens.


How many lumens are in a 75 watt incandescent light bulb?

It varies from about 600 to 1100 lumens. Typically the higher the lumens output, the shorter the lifespan of the globe. Have a look at this list of globes for purchase whih shows wattage and lumens: http://1000bulbs.com/category/75-watt-incandescent-standard-shape-light-bulbs/


Do higher wattage bulbs give a brighter light?

No. All light from light bulbs (incandescent) are equally bright. Higher wattage bulbs simply produce a higher quantity of light measured in lumens.


How many lumens does a laser produce?

If you have the wattage of the laser you can plug it into a formula X/P=L. Where One lumen is equal to 0.001496 watts (1.496mW) which is Power. X is the number of watts or milliwatt and L is Lumens. So if you have a 1 watt laser you have 668.449 lumens being produced by it.


How many lumens per watt?

161 lumens I believe the above answer to be inaccurate. It depends on the light source. For example: For an incandescent light bulb 1 watt it is approx. 18 Lumens. However most LED's use only about 10% the wattage to produce the same amount of light. So for LED's .1 watt produces 18 Lumens.


How many lumens are in a 34 watt bulb?

The amount of light (Lumens) delivered by a light bulb cannot be determined by it's wattage. Bulbs of any wattage by different manufacturers can have different output (lumens). Everything else being the same, a 34 watt 110volt bulb will put out about half the light than a 34 watt 220 volt bulb, and a 12 volt one will put out about 10% of the light as the 120 volt one will.


What is the connection between wattage and bulb brightness?

Bulb brightness is measured in lumens which express the amount of light produced, while the electric power used is measured in watts. The typical efficiency of some different types of bulb is: Incandescent 12 lumens per watt Halogen 17 lumens per watt CFL (compact fluorescent) 50-60 lumens/watt LED (light-emitting diodes) 90-100 lumens/watt.


What is light strength?

It's a unit called lumens. You can look that up and find more about it. Or if you're I. The movie industry, it's measured in wattage. Hope this helps.


How many lumens in a 250 Watt incandescent lamp?

The actual amount of light (lumens) given off by a bulb depends on the how the bulb was made and with what materials. It depends on the filament material, its length and thickness, and the type of gas in the bulb. As a rule, longer lasting bulbs of the same wattage will generally be less bright than others and brighter bulbs of the same wattage will not last as long as other bulbs.Sample lumen outputs:Sylvania 250 Watt Indoor Soft White 3-Way Bulb can emit 3940 lumens at its highest setting.Philips 250 Watt 120 to 130V PAR38 Krypton Flood Bulb emits 3100 lumens


What is the total rated wattage for fluorescent lamp?

Fluorescent lamps can output a total of 100 lumens per watt. Fluorescent lamps were invented by Peter Cooper Hewitt in 1901.


How efficient is an ordinary incandescent light bulb?

It depends on how you define efficiency. Efficiency is a measure of how one item performs in comparison to another. One single item does not have any efficiency by itself. If by efficient you mean what it costs to operate, the higher the wattage the less efficient it is. But with higher wattage you also get more light. If by efficient you intend to compare incandescent bulbs of the same wattage with one another, you want to compare lumens, which is the measure of actual light output. Comparing 2 bulbs of the same wattage, the bulb with the higher lumens would be considered more efficient than the other. Compact fluorescent bulbs (CFL) are considered more efficient than incandescent bulbs because they put out much more lumens for the same wattage. A 13W incandescent puts out almost no light at all. A 13W CFL puts out what is about equivalent in lumens to a 60W incandescent. Since watts are the measure of power used, a 13W bulb is more efficient than a 60W bulb with similar lumens. In electrical physics, heat is a measure of inefficiency. The most efficient electrical equipment would do its work while producing almost no heat at all. This means that as a matter of physics, an incandescent bulb is terribly inefficient because it puts out a lot of heat.

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