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How to Determine How Many Lumens You’ll Need to Properly ...

Have you ever wondered how many LED lights, or LED Lumens , you need to light a room? The question itself may be challenging and, when faced with having to calculate how much LED lighting you need to create a well lit space, it can get even more complicated. Here s how to deter-mine how many Lumens you need to Properly light a to Determine How Many Lumens You ll Need to Properly Light Your SpaceLumensLumen output, also known as brightness or light output, is a measure of the total quan-tity of visible light emitted by a light source per unit of time, weighted according to the human eye s sensitivity to wavelengths of light, the study of which is known as lu-minous efficiency function. The reference point: a standard 100-watt incandescent light bulb produces about 1,500 1,700 a measure of brightness; instead, it s a measure of how much electricity (or energy) a light bulb consumes to reach its claimed brightness.

We based our calculations on 8-foot ceilings. Finally, personal preference will play the largest part in your decision. If you like the room to be especially bright, you may want to add an additional 10 to 20% to our numbers. In fact, the best approach for most spaces is to aim high and install dimmers to bring the light down to desired levels.

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Transcription of How to Determine How Many Lumens You’ll Need to Properly ...

1 Have you ever wondered how many LED lights, or LED Lumens , you need to light a room? The question itself may be challenging and, when faced with having to calculate how much LED lighting you need to create a well lit space, it can get even more complicated. Here s how to deter-mine how many Lumens you need to Properly light a to Determine How Many Lumens You ll Need to Properly Light Your SpaceLumensLumen output, also known as brightness or light output, is a measure of the total quan-tity of visible light emitted by a light source per unit of time, weighted according to the human eye s sensitivity to wavelengths of light, the study of which is known as lu-minous efficiency function. The reference point: a standard 100-watt incandescent light bulb produces about 1,500 1,700 a measure of brightness; instead, it s a measure of how much electricity (or energy) a light bulb consumes to reach its claimed brightness.

2 Each type of light source, LED, fluorescent, halogen or incandescent has a different lumen-per-watt ratio. Below we re going to use Lumens as a measurement to make sure we have enough light for a EquivalenceSince we ve conflated watts and Lumens , it s easier to talk about bulbs in terms of watts. So if a 100-watt incandescent produces 1,500 Lumens , and a 10-watt LED does the same, the 10-Watt LED may advertise 100-watt equivalent on its The number of Lumens a bulb produces for each watt it consumes. The higher the number, the more efficient the bulb. For example, lighting products that have been designated with the ENERGY STAR label are deemed high efficacy, meaning they have been determined to deliver the same fea-tures while using less Room Square FootageMultiply the length times the width of the room to get the Room Square Footage.

3 For example, if the room is 10 feet wide and 10 feet long, the Room Square Footage will be 100 square the Foot-candles by Room TypeA footcandle is how bright a light is one foot away from its source. Lighting requirements/needs vary depending on the type of room being lit. For ex-ample, a bathroom or kitchen will require more footcandles than a living room or bedroom. RoomLiving Room10-2030-40 Kitchen General70-80 Kitchen StoveKitchen Sink70-80 Dining Room30-40 Bedroom10-205-10 Hallway70-80 BathroomFootcandles NeededDetermine the Required Lumens To Determine the Lumens needed, you will need to multiply your Room Square Footage by your room footcandle requirement. For example, a 100-square-foot living room, which needs 10-20 footcandles, will need 1,000-2,000 Lumens . A 100-square-foot dining room, which needs 30-40 footcandles, will need 3,000-4,000 the average space of 250 square feet, you ll need roughly 2,500-5,000 Lumens as your primary lightsource (10-20 Lumens x 250 square feet).

4 In your dining room, you ll want about 30 Lumens per square foot on your dining table (you want to see your food, but not examine it), so if your table is 6 x 3 feet, that s540 Lumens . Keep in mind, however, that these numbers are for typical conditions. If you have especially dark colored walls and furniture, or if you re using fixtures with shades, you ll need roughly an additional 10 Lumens per square foot. We based our calculations on 8-foot ceilings. Finally, personal preference will play the largest part in your decision. If you like the room to be especially bright, you may want to add an additional 10 to 20% to our numbers. In fact, the best approach for most spaces is to aim high and install dimmers to bring the light down to desired lumens200 lumens200 lumens5000 lumens540 lumensThe Breakdown How Much Light is Enough?

5 ManufacturingDrilling, riveting, screw assemble, easy difficult (a)Extra (a)AuditoriumsSocial ManufacturingFinal assembly, finishing, & chassis parts stations, posting & ShopsBeauty ManufacturerReceiving, storing, shipping,winding, making, , , (a)Sewing, (a)Electrical Equipment coil winding, Service FacilitiesDining , LanesParking exercise & , for , elevators and andworking & Steel ManufacturingStock, hot top, checkercellar, , slag pits, stripping platforms, repairs,mixer room, machine reading, repair and & notes, cataloging,card files, check ShopsRough bench, roughgrinding, bench and (a)Materials HandlingLoading stock , packing, , (k) and private , lounges andreception printing andduplicating with VDT ShopSpraying, rubbing,hand art, hand painting & ManufacturingBeaters, , manchine reel, engraving,etching.

6 Metal plate inspection,galvanized, area , , MillsCotton picking, carding,roving, & , sawing and bench , planing, rough sanding,medium quality machine andbench work, gluing,veneering, bench and machine work,fine sanding and Candle Index Candle Index Area & Task A ver ag e Maintained Footcandles (Horizontal) (FC)Maintained Range of Maintained Footcandles (Horizontal) (FC)Aver ag e Footcandles Maintained Range of (V er tical) (FC)Footcandles Comments(V er tical) (FC)105 Bulky Items Large Labels3015 Small Items Small Labels2010 - 30105 - 15 Cold Stor ag e2010 - 30 Open War ehouse2010 - 30105 - 15 War ehouse w/Aisles40 Open Office30 - 50@30 Above Finished Floor (AFF)4030 - 50@30 AFFPriv ate Office30 Confer ence - 30155 - 20 Lunch & Break Room4030 - 50 Matte surface reflectan ce for the tab le 40% recomm ende d@30 AFFC lassr oomGymnasium12530 Class I (Pro or Di v.)

7 1 College)802050150 Class III (High School) 30100 Class II (Div. 2 or 3 College)Class IV (Elementary) - - 10 Corridor2510 - 40 WAREHOUSING & STORAGECOMMERCIAL OFFICEEDUCATIONAL (SCHOOLS)Building Area & TaskAver ag e Maintained Footcandles (Horizontal) (FC)Maintained Range of Maintained Footcandles (Horizontal) (FC)Aver ag e Footcandles Maintained (V er tical) (FC)Range of Footcandles Comments(V er tical) (FC)Assembly3015 - 603015 - 60 Simple (Large Item)Difficult (fine)10050 - 20010050 - 200 Component Manufacturing3015 - 60 Large3015 - 60 Medium5025 - 1005025 - 1005 Parking (Cover ed)1FC min, 10:1 Max to Min UniformityParking (Open) (Medium Activity) - - ti ng Zone 3 (U rban) - - Station Canopy10 - 15 Lighti n g Zone 2 (subu rban) - 2 Safet y (Building Exterior)50 General Retail (Ambient)4020 - 8015 Department Stor - 30 Perimeter7535 - 150If securit y is an issue raise average level to 3 Accent Lighting (Displays)5025 - 10010 Showr oom5 - 205025 - 10030 Service Area15 - 3020 Sales Lot (Exterior)Lighting Zone 3 (Urban)10 - 402010 - 403 - 10 times greater th an amb ient li gh t - - 30G2010 - 40 Cir culationLighting Zone 2 (Subu rban) - 155025 - 10020 General Retail10-405025-100 Perim eter20 BANKATM10-4015 Ver tical at fac e of ATMINDUSTRIAL/ Horizontal horizontal plane that average maintained foot-candles are measured, for example a tabletop.

8 Vertical vertical plane the average maintained foot-candles are measured, for example a Candle Index Area & TaskAver ag e Maintained Footcandles (Horizontal) (FC)Maintained Range of Maintained Footcandles (Horizontal) (FC)Aver ag e Footcandles Maintained (V er tical) (FC)Range of Footcandles Comments(V er tical) (FC)Assembly3015 - 603015 - 60 Simple (Large Item)Difficult (fine)10050 - 20010050 - 200 Component Manufacturing3015 - 60 Large3015 - 60 Medium5025 - 1005025 - 1005 Parking (Cover ed)1FC min, 10:1 Max to Min UniformityParking (Open) (Medium Activity) - - ti ng Zone 3 (U rban) - - Station Canopy10 - 15 Lighti n g Zone 2 (subu rban) - 2 Safet y (Building Exterior)50 General Retail (Ambient)4020 - 8015 Department Stor - 30 Perimeter7535 - 150If securit y is an issue raise average level to 3 Accent Lighting (Displays)5025 - 10010 Showr oom5 - 205025 - 10030 Service Area15 - 3020 Sales Lot (Exterior)Lighting Zone 3 (Urban)10 - 402010 - 403 - 10 times greater th an amb ient li gh t - - 30G2010 - 40 Cir culationLighting Zone 2 (Subu rban) - 155025 - 10020 General Retail10-405025-100 Perim eter20 BANKATM10-4015 Ver tical at fac e of ATMINDUSTRIAL/MANUFACTURINGEXTERIORRETAI LAUTOMOTIVEROCERYINGB uilding Area & TaskAver ag e Maintained Footcandles (Horizontal) (FC)

9 Maintained Range of Maintained Footcandles (Horizontal) (FC)Aver ag e Footcandles Maintained (V er tical) (FC)Range of Footcandles Comments(V er tical) (FC)Assembly3015 - 603015 - 60 Simple (Large Item)Difficult (fine)10050 - 20010050 - 200 Component Manufacturing3015 - 60 Large3015 - 60 Medium5025 - 1005025 - 1005 Parking (Cover ed)1FC min, 10:1 Max to Min UniformityParking (Open) (Medium Activity) - - ti ng Zone 3 (U rban) - - Station Canopy10 - 15 Lighti n g Zone 2 (subu rban) - 2 Safet y (Building Exterior)50 General Retail (Ambient)4020 - 8015 Department Stor - 30 Perimeter7535 - 150If securit y is an issue raise average level to 3 Accent Lighting (Displays)5025 - 10010 Showr oom5 - 205025 - 10030 Service Area15 - 3020 Sales Lot (Exterior)Lighting Zone 3 (Urban)10 - 402010 - 403 - 10 times greater th an amb ient li gh t - - 30G2010 - 40 Cir culationLighting Zone 2 (Subu rban) - 155025 - 10020 General Retail10-405025-100 Perim eter20 BANKATM10-4015 Ver tical at fac e of ATMINDUSTRIAL/ Horizontal horizontal plane that average maintained foot-candles are measured, for example a tabletop.

10 Vertical vertical plane the average maintained foot-candles are measured, for example a wall.


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