How Many Can Lights Per Square Foot

To figure out how many lights you need to achieve this level of lighting you must complete an equation for lumens.

How many can lights per square foot.

If the ceiling is 10 feet you ll want to put about 5 feet of space in between each fixture. Using this same formula an l shaped room with a 10 feet wide by 8 feet long section and a 10 feet wide by 4 feet long needs 120 watts in the first section and 60 watts in the other for a total of 180 watts of light. This gives you the total required wattage for the space. If a room has an 8 foot ceiling you should space your recessed lights approximately 4 feet apart.

Commercial spaces like retail stores can utilize many of the same light types but they may not require the same number. For example a single downlight on a 10 foot high ceiling can cover about 40 square feet of space on the floor. Result may defer according to spacing layout of led lights and position from wall. They have a tighter beam control which will get more of the light down from the ceiling to the surface plane.

The industry standard for general lighting in a room is 70 foot candles per square foot. For general lighting purposes you ll want to provide 1 5 watts of lighting per square foot of space in the room. To determine how far apart to space your recessed lights divide the height of the ceiling by two. Please choose proper unit of your room area to help us count led lights lux and watts calculation required per square foot meter inch.

For example for a room 10 feet wide by 12 feet long multiply 10 times 12 to get 120 then multiply by 1 5 to get 180 watts. This lumen calculation formula is using predefined standard lux levels required for different room types. Once you know how many lights a room needs you can use this placement calculator to create a reflected ceiling plan. Multiply the square footage of the area by 1 5 which is the number of watts per square foot that the average residential space requires.

So to get the number of lights you ll need in the room first measure to get the room s square footage. Multiply by that 1 5 to get the number of watts needed for that space. Industrial spaces often require more lumens per square foot because of the complicated potentially dangerous nature of work being performed. To use the formula you need the square footage of the room the lumens per fixture the co efficient of usage and finally the light loss.

Use this rule as a base line though. The area 15 10 150 square feet total watts required for this area 150 1 5 225 watts if you plan to use 40 watt traditional bulbs you will need six 40 watt bulbs let calculate the exact placement locations consider the recessed lighting layout consists of two vertical rows and three horizontal rows.