How Many Can Lights Per Square Foot

Multiply by that 1 5 to get the number of watts needed for that space.

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. Use this rule as a base line though. 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. If the lights will be installed in a ceiling taller than 16 feet you may also want to use par type light bulbs.

If a room has an 8 foot ceiling you should space your recessed lights approximately 4 feet apart. To determine how far apart to space your recessed lights divide the height of the ceiling by two. The industry standard for general lighting in a room is 70 foot candles per square foot. This gives you the total required wattage for the space.

Once you know how many lights a room needs you can use this placement calculator to create a reflected ceiling plan. For example a single downlight on a 10 foot high ceiling can cover about 40 square feet of space on the floor. Please choose proper unit of your room area to help us count led lights lux and watts calculation required per square foot meter inch. Commercial spaces like retail stores can utilize many of the same light types but they may not require the same number.

In these spaces you ll want to look for shop lights wraparound lights led troffers and high bay lights that have higher output. To figure out how many lights you need to achieve this level of lighting you must complete an equation for lumens. For general lighting purposes you ll want to provide 1 5 watts of lighting per square foot of space in the room. 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.

Industrial spaces often require more lumens per square foot because of the complicated potentially dangerous nature of work being performed. 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. 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.

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. Result may defer according to spacing layout of led lights and position from wall.