Cable consisting of a flexible metal jacket surround two or more insulated wires.

Commercially available lighting performance evaluation report. A program of the US Department of Energy that tests LED products to assess how well measured performance compares to marketing claims and conventional alternatives.

The intensity of light in a specific direction. Center beam candlepower is the intensity in the middle of the beam, generally the maximum intensity in a reflectorized lamp.

Fixture part that covers an outlet box or attachment point.

System for controlling all light from one or more locations. Also known as Home Control or Lighting Control/Automation.

In dimming controls, a group of fixtures that are operated together. Also known as Zones.

Wiring path for electricity, including conductors, load, and circuit protection.

A protective device that automatically breaks the electrical path when overloaded. Located in the Electrical Panel.

Also known as CRI. A measure of how light sources render colors. The reference, CRI of 100, is a full spectrum source of the same color temperature as the lamp. The higher the CRI, the better the color rendering, given the color temperature of the lamp. Use at least 80 CRI for residential applications.

The appearance of white light, in terms of warmth or coolness. Color Temperature is measured using a Black Body and is shown in degrees Kelvin. Warm colors correspond to lower color temperatures and cool colors to warm color temperatures.