How Many Can Lights Per Square Foot

To determine how far apart to space your recessed lights divide the height of the ceiling by two.

How many can lights per square foot. In these spaces you ll want to look for shop lights wraparound lights led troffers and high bay lights that have higher output. If a room has an 8 foot ceiling you should space your recessed lights approximately 4 feet apart. To figure out how many lights you need to achieve this level of lighting you must complete an equation for lumens. Result may defer according to spacing layout of led lights and position from wall.

Use this rule as a base line though. They have a tighter beam control which will get more of the light down from the ceiling to the surface plane. 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. For general lighting purposes you ll want to provide 1 5 watts of lighting per square foot of space in the room.

If the lights will be installed in a ceiling taller than 16 feet you may also want to use par type light bulbs. So to get the number of lights you ll need in the room first measure to get the room s square footage. 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. Multiply by that 1 5 to get the number of watts needed for that 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. Once you know how many lights a room needs you can use this placement calculator to create a reflected ceiling plan. Industrial spaces often require more lumens per square foot because of the complicated potentially dangerous nature of work being performed. 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. This gives you the total required wattage for the space. 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 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.

For example a single downlight on a 10 foot high ceiling can cover about 40 square feet of space on the floor. If the ceiling is 10 feet you ll want to put about 5 feet of space in between each fixture.