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.

How many can lights 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. Result may defer according to spacing layout of led lights and position from wall. To figure out how many lights you need to achieve this level of lighting you must complete an equation for lumens. This lumen calculation formula is using predefined standard lux levels required for different room types.

So to get the number of lights you ll need in the room first measure to get the room s square footage. 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. A small 5 by 8 foot closet would need just one recessed light while a 10 by 12 foot room 120 square feet would require three units. Please choose proper unit of your room area to help us count led lights lux and watts calculation required per square foot meter inch.

If the lights will be installed in a ceiling taller than 16 feet you may also want to use par type light bulbs. Industrial spaces often require more lumens per square foot because of the complicated potentially dangerous nature of work being performed. They have a tighter beam control which will get more of the light down from the ceiling to the surface plane. 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.

For example a single downlight on a 10 foot high ceiling can cover about 40 square feet of space on the floor. To determine how far apart to space your recessed lights divide the height of the ceiling by two. Use this rule as a base line though. This gives you the total required wattage for the space.

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. Multiply by that 1 5 to get the number of watts needed for that space. The industry standard for general lighting in a room is 70 foot candles per square foot. Once you know how many lights a room needs you can use this placement calculator to create a reflected ceiling plan.

If a room has an 8 foot ceiling you should space your recessed lights approximately 4 feet apart. In these spaces you ll want to look for shop lights wraparound lights led troffers and high bay lights that have higher output.