Specification Sheet

Appendix | Glossary
196
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0-10 V Control
0-10 V is an analog lighting control protocol. A 0-10 V
control modifies a voltage between 0 and 10 volts
DC to produce a varying intensity level. There are
two existing 0-10 V standards; and they are not
compatible with each other, so it is essential to
understand which type is required. The two 0-10 V
control types are 1) current source (theatrical dimming
standard ESTA E1.3) and 2) current sink (dimming
ballast standard IEC Standard 90626).
3-way Dimmer with Switches
3-way dimmers adjust the light level from one location.
When used with 3-way and 4-way switches, the
lights can be switched On to the dimmer level
from additional locations (a 3-way switch is for two
locations; 4-way switch is for three or more locations).
Air Gap Switch
A safety feature in all Lutron controls for true “off”
function by disconnecting power to a lighting load.
The switch physically separates two contacts,
resulting in an air gap between the contacts.
The switch is visible and front accessible.
Styles will vary for each dimmer type.
Amperes/Amps
Unit of measurement of electrical current.
Astronomical Time Clock
A time switch device that is programmed for a
specific geographic location to provide automatic
timed event control of lights and/or shades.
The programmed time is coordinated with daily
variations of sunrise and sunset times that change
throughout the year.
Backbox (Wallbox, Switchbox)
A wall mounted metal or plastic enclosure housing
one or more electrical devices (available in single or
multiple gangs). Standard USA 1-gang size is used
for Lutron domestic controls (3 in high x 2.5 in deep).
See page 169 for further information.
Ballast
An electrical device required to operate all fluorescent
and high intensity discharge (HID) lamps. Ballasts
furnish the necessary voltage and current for starting
and operating the lamp(s). Internationally, it is
sometimes referred to as control gear.
Compact Fluorescent Lamp (CFL)
A high efficiency lamp type that can only be dimmed
using a matching dimming ballast and dimmer.
Standard lamp types are Twin Tube, Quad Tube and
Triple Tube. They are available in 2-pin and 4-pin
versions. Both require an external ballast located
in the fixture to operate, 2-pin versions are not
dimmable, and 4-pin versions are dimmable when
used with a dimming ballast. “Screw-in” CFLs are
designed to replace incandescent lamps in existing
fixtures, but most are not dimmable. Some can
be dimmed, with a specific type of dimmer.
Confirm the compatibility of CFL lamp and
dimmer before installing these lamps.
Companion Dimmer
Allows for dimming from two or more wall locations
when used with a compatible multi-location dimmer.
Companion Switch
Allows for switching from two or more wall locations
when used with a compatible multi-location switch.
Daylight Sensor
A device that monitors changes in available daylight.
Typically ceiling or luminaire mounted, the sensor
provides a feedback signal for automatic dimming or
switching of electric lighting.
Derating
In relation to Lutron wallbox dimmers, the reduction of
the power (Wattage) or current (Amps) capacity that a
wallbox dimmer can reliably handle. Dimmers must be
derated when side sections of the mounting yoke or
fin have been removed from the unit to allow
for ganging. See page 170.