Lighting
Find your total wattage. Here’s a handy formula to figure out how much light your room needs: Multiply the length of the room by the width to find the total area. Multiply the area by 1.5; this is the total wattage you’ll need to light the room. For example: If your room is 17 feet wide and 20 feet long, the total area is 340 square feet. Multiply 340 by 1.5, and you’ll get 510, so you’ll need 510 watts of total light to efficiently light your room. Tip: When installing downlights in your kitchen, use a mix of wide-angle downlights for ambient lighting and narrow-beam downlights for task lighting over your stove, sink and counters.
Determine the right number of fixtures. Once you have the total number of watts you'll need, divide it by the wattage of the bulb you'd like to use. This will give you the total number of recessed fixtures you'll need in that space.
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