Recessed Lighting Layout

Recessed Lighting Layout

One of the most important principles to understand when designing a recessed lighting layout is beam angle. In recessed cans, the light is produced in the shape of a cone. You picture the light starting as a point at the light fixture and forming a circle on the floor. The beam angle is the angle of this light out of the bulb. For example a 60-degree beam angle will produce a circle of light about 9 feet across on the floor if the fixture is 8 feet off the floor.

That is just one part of the formula. That circle of light we now have on the floor is not all the same intensity. About five and a half feet of that circle is good intense light while the remainder is spill over and diminishes as it gets further from the center. This is very important to understand. With this information, you can overlap the spill over light so that you end up with a nice even light pattern over the entire area you are trying to illuminate. Something to remember when you are planning this out is something called the work plane. This is an area about 30" above the floor. It is an area where most tasks take place.

Recessed Lighting Layout