Outdoor Lighting Glossary

Come across a lighting word you aren't sure of? Completely new to the world of lighting? We feel your pain! Here you will find a collection of terms and concepts that should help to make your life easier.

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Select the first letter of the word from the list above to jump to appropriate section of the glossary.

Tandem Wiring - A wiring option in which a ballast is shared by two or more luminaires. This reduces material and energy costs. Also called "master-slave" wiring.

Task - That which is to be seen. The visual function to be performed

Task Lighting - Lighting directed to a specific surface or area that provides illumination for visual tasks.

Tilt - Upward inclination of a luminaire from the horizontal.

Transformer - device to raise or lower electric voltage.

Transmission - The passage of light through a material.

Triple Tube - See Compact Fluorescent Lamp

Tungsten-Halogen Lamp - A gas filled tungsten incandescent lamp containing a certain proportion of halogens

Twin-Tube - See Compact Fluorescent Lamp