How many can lights in a 20×20 room?
If you have a center light fixture, you should be able to use 4 inch line voltage cans or low voltage for supplemental lighting. I would go with at least 8 three inch cans for a 20 foot room.
Can you have too many recessed lights?
It often seems that installing recessed lights is a cure all, but they cannot properly wash light upon walls and all dark corners, which would bounce reflective light into the room. In fact, using too many recessed light may leave areas of your room dark and may even cost you more on your electric bill.
How do you stagger recessed lighting?
The typical rule is to place the lights the same number of feet apart as the bulb’s diameter, in inches. So a bulb with a four-inch diameter should be four feet away from the next light.
How many 6 recessed lights do I need?
Measure your room to see how many fixtures you will need. A common rule of thumb is that you use one recessed light for every 4 to 6 square feet of ceiling space. Doing so provides even, overall illumination.