IES HB See “IES Lighting Handbook.”
IES LIGHTING HANDBOOK is the Illuminating Engineering Society National Association document titled
“The IES Lighting Handbook: Reference and Applications, Tenth Edition” (2011).
ANSI/IES RP-16-10 is the document coauthored by the American National Standards Institute and the
Illuminating Engineering Society of North America, Recommended Practice titled “Nomenclature and
Definitions for Illuminating Engineering.”
IES LM-9 is the Illuminating Engineering Society document titled, “Electrical and Photometric
Measurements of Fluorescent Lamps.” (IES LM-9-2009)
IES LM-20 is the Illuminating Engineering Society document titled “Photometric Testing of Reflector-Type
Lamps – Incandescent Lamps.” (IES LM-20-13)
IES LM-45 is the Illuminating Engineering Society document titled, “Electrical and Photometric
Measurements of General Service Incandescent Filament Lamps.” (IES LM-45-09)
IES LM-46 is the Illuminating Engineering Society document titled, “Photometric Testing of Indoor
Luminaires Using High Intensity Discharge or Incandescent Filament Lamps.” 2004. (IES-LM-46-12)
IES LM-51 is the Illuminating Engineering Society document titled, “Electrical and Photometric
Measurements of High Intensity Discharge Lamps.” (IES LM-51-13)
IES LM-66 is the Illuminating Engineering Society document titled, “Electrical and Photometric
Measurements of Single-Ended Compact Fluorescent Lamps.” (IES LM66-11)
IES LM-79-08 is the Illuminating Engineering Society document titled, “IES Approved Method for the
Electrical and Photometric Measurements of Solid-State Lighting Products.”
IES LM-80 is the Illuminating Engineering Society document titled, “Measuring Lumen Maintenance of LED
Light Sources.” (IES LM 80-08).
IES TM-15-11 is the Illuminating Engineering Society document titled, “Luminaire Classification Systems for
IES TM-21 is the Illuminating Engineering Society document titled, “Projecting Long Term Lumen
Maintenance of LED Light Sources.” (IES TM-21-11).
Accent Lighting is directional lighting designed to highlight or spotlight objects. It can be recessed, surface mounted or mounted to a pendant, stem or track.
Chandelier is a ceiling-mounted, close-to-ceiling or suspended decorative luminaire that uses glass, crystal, ornamental metals or other decorative material.
Compact Fluorescent Lamp is a fluorescent lamp less than 9 inches maximum overall length (M.O.L.) with a T5 or smaller diameter glass tube that is folded, bent or bridged.
Decorative Lamp is a lamp with a candle-like or globe shape envelope including shapes B, BA, C, CA,
DC, G, and F as defined in ANSI C79.1-, and with at least 5 percent of its total flux radiated in the 110 deg – 180 deg zone of vertical angles, as measured from the nadir, when the lamp is oriented in a base up position.
Decorative (Lighting/Luminaire) is lighting or luminaires installed only for aesthetic purposes and that does not serve as display lighting or general lighting.
Display Lighting is lighting that provides a higher level of illuminance to a specific area than the level of surrounding ambient illuminance. Types of display lighting include:
Floor: supplementary lighting required to highlight features, such as merchandise on a clothing rack, which is not displayed against a wall.
Wall: supplementary lighting required to highlight features, such as merchandise on a shelf, which is displayed on perimeter walls.
Window: lighting of objects such as merchandise, goods, and artifacts, in a show window, to be viewed from the outside of a space through a window.
Case: lighting of small art objects, artifacts or valuable collections which involves customer inspection of very fine detail from outside of a glass enclosed display case.
General Lighting is installed electric lighting that provides a uniform level of illumination throughout an area, exclusive of any provision for special visual tasks or decorative effect, exclusive of daylighting, and also known as ambient lighting
GU-24 is the designation of a lamp holder and socket configuration, based on a coding system by the International Energy Consortium, where “G” indicates the broad type of two or more projecting contacts, such as pins or posts, “U” distinguishes between lamp and holder designs of similar type but that are
not interchangeable due to electrical or mechanical requirements, and “24” indicates 24 millimeters center to center spacing of the electrical contact posts.
Illuminance is the incident luminous flux density on a differential element of surface located at a point and oriented in a particular direction, expressed in lumens per unit area.
Illumination is light incident on a surface of body, or the general condition of being illuminated.
Inseparable Solid State Lighting (SSL) Luminaire is a luminaire featuring solid state lighting components such as LEDs and driver components, which cannot be easily removed or replaced by the end user, thus requiring replacement of the entire luminaire. Removal of solid state lighting components may require the cutting of wires, use of a soldering iron, or damage to or destruction of the luminaire.
Lamp is an electrical appliance that produces optical radiation for the purpose of visual illumination, designed with a base to provide an electrical connection between the lamp and a luminaire, and designed to be installed into a luminaire by means of a lamp-holder integral to the luminaire.
Landscape Lighting is a type of outdoor lighting that is recessed into or mounted on the ground,
paving or raised deck, which is mounted less than 42” above grade or mounted onto trees or trellises, and that is intended to be aimed only at landscape features.
Lantern is an outdoor luminaire that uses an electric lamp to replicate the appearance of a pre-electric lantern, which used a flame to generate light.
Light is the luminous equivalent of power and is properly called luminous flux.
Lighting, or illumination, is the application of light to achieve some practical or aesthetic effect.
Light Emitting Diode (LED) is a p-n junction solid state diode whose radiated output is a function of its physical construction, material used, and exciting current. The output may be in the near ultraviolet, the visible or in the infrared regions of the spectrum.
LED Light Engine is an integrated assembly comprised of LED packages, LED components, LED arrays, LED modules, or LED driver, and other optical, thermal, mechanical and electrical components.
The device is intended to connect directly to the branch circuit through a custom connector compatible with the LED luminaire for which it was designed and does not use an ANSI standard base. (IES RP- 16-10)
Note: Non-integrated assemblies such as remote mounted drivers, shall also be considered LED light engines, so long as interconnecting conductors of appropriate gauge and length are employed between the drivers and LED packages, arrays or modules, and electrical interconnects are employed at both ends of the conductors.
Low Voltage is less than 90 volts.
Lumen Maintenance is a strategy used to provide a precise, constant level of lighting from a lighting system regardless of the age of the lamps or the maintenance of the luminaires.
Luminaire is a complete lighting unit consisting of lamp(s) and the parts that distribute the light, position and protect the lamp(s), and connect the lamp(s) to the power supply.
Luminance is a measure of the light emitting power of a surface, in a particular direction, per unit apparent area.
Luminous flux is visually evaluated radiant flux and defines “light” for purposes of lighting design and illuminating engineering.
Marquee lighting is a permanent lighting system consisting of one or more rows of many small lamps, including light emitting diodes (LEDs), or fiber optic lighting, attached to a canopy.
Omnidirectional lamp is a general service replacement lamp with an ANSI standard base that emits the majority of light produced in an even distribution. Omnidirectional lamps shall have a luminous distribution that has at least 5 percent of its total flux radiated in the 135 deg – 180 deg zone of vertical
angles, as measured from the nadir, when the lamp is oriented in a the base up position. An omnidirectional lamp oriented base up with its luminous intensity values measured on 22.5 deg horizontal angle increments and 5 deg vertical angle increments, shall have 90 percent of the luminous
intensities measured values vary by no more than 25 percent from the average of all measured values in all planes. Omnidirectional lamps can be standard; having an ANSI standard lamp shape of A, BT, P, PS, S or T, or omnidirectional lamps can have a non-standard shape, such as a self-ballasted
compact fluorescent that utilize a bare spiral.
Ornamental lighting for compliance with Part 6 is the following:
Luminaires installed outdoor which are rated for 100 watts or less that are post-top luminaires, lanterns, pendant luminaires, chandeliers and marquee lighting.
Decorative Luminaires installed indoor that are chandeliers, sconces, lanterns, neon and cold cathode, light emitting diodes, theatrical projectors, moving lights and light color panels.
Pendant is a mounting method in which the luminaire is suspended from above.
Permanently Installed lighting consists of luminaires that are affixed to land, within the meaning of
Civil Code Sections 658 and 660, except as provided below. Permanently installed luminaires may be mounted inside or outside of a building or site. Permanently installed luminaires may have either plug-
lighting attached to walls, ceilings, columns, inside or outside of permanently installed cabinets, internally illuminated cabinets, mounted on poles, in trees, or in the ground; attached to ceiling fans and integral to exhaust fans. Permanently installed lighting does not include portable lighting or lighting that
is installed by the manufacturer in exhaust hoods for cooking equipment, refrigerated cases, food preparation equipment, and scientific and industrial equipment.
Portable Lighting is lighting, with plug-in connections for electric power, that is: table and freestanding floor lamps; attached to modular furniture; workstation task luminaires; luminaires attached to workstation panels; attached to movable displays; or attached to other personal property.
Post top luminaire is an outdoor luminaire that is mounted directly on top of a lamp-post.
Precision Lighting is task lighting for commercial or industrial work that illuminates low contrast, finely detailed, or fast moving objects.
Radiant power is the time-rate-flow of radiant energy.
Radiant Energy is the electromagnetic or photonic radiant energy from a source.
Sconce is a wall mounted decorative accent luminaire.
Source (light) is the general term used to reference a source of light. It can refer variously to an electric lamp, a light emitting diode (LED), an entire luminaire with lamp and optical control, or fenestration for daylighting.
Special Effects Lighting is lighting installed to give off luminance instead of providing illuminance, which does not serve as general, task, or display lighting.
Task Lighting is lighting that is not general lighting and that specifically illuminates a location where a task is performed.
Temporary Lighting is a lighting installation, with plug-in connections, that does not persist beyond 60 consecutive days or more than 120 days per year.
Track Lighting is a system that includes luminaires and a track, rails, or cables that both mount the system, and deliver electric power. Track lighting includes the following types:
Line-Voltage Track Lighting is equipped with luminaires that use line-voltage lamps or that are equipped with integral transformers at each luminaire.
Low-Voltage Track Lighting is equipped with remote transformers for use with low-voltage
equipment along the entire length of track.
Track-Mounted Luminaires are luminaires designed to be attached at any point along a track lighting system. Track mounted luminaires may be line-voltage or low-voltage.
Tuning is the ability to set maximum light levels at a lower level than full lighting power.
LIQUID LINE is the refrigerant line that leads from the condenser to the evaporator in a split system air conditioner or heat pump. The refrigerant in this line is in a liquid state and is at an elevated temperature.
This line should not be insulated.
LISTED is in accordance with Article 100 of the California Electrical Code.
LIGHTING CONTROLS consist of the following:
Astronomical Time-Switch Control is an Automatic Time-Switch Control that controls lighting based on the time of day and astronomical events such as sunset and sunrise, accounting for geographic location and calendar date.
Automatic Daylight Control uses one or more photosensors to detect changes in daylight illumination and then automatically adjusts the luminous flux of the electric lighting system in response.
Automatic Multi-Level Daylight Control adjusts the luminous flux of the electric lighting system in either a series of steps or by continuous dimming in response to available daylight. This kind of control uses one or more photosensors to detect changes in daylight illumination and then automatically adjusts the electric lighting levels in response.
Automatic Time Switch Control controls lighting based on the time of day.
Captive-Key Override is a type of lighting control in which the key that activates the override cannot be released when the lights are in the on position.
Countdown Timer Switch turns lighting or other loads ON when activated using one or more selectable count-down time periods and then automatically turns lighting or other loads OFF when the selected time period had elapsed.
Dimmer varies the luminous flux of the electric lighting system by changing the power delivered to that lighting system.
Dimmer, Full-Range (Also known as a Continuous Dimmer) varies the luminous flux of the electric lighting system over a continuous range from the device’s maximum light output to the device’s minimum light output without visually apparent abrupt changes in light level between the various
Dimmer, Stepped varies the luminous flux of the electric lighting system in one or more predetermined discrete steps between maximum light output and OFF with changes in light level between adjacent steps being visually apparent.
Lighting Control, Self Contained is a unitary lighting control module that requires no additional components to be a fully functional lighting control.
Lighting Control System requires two or more components to be installed in the building to provide all of the functionality required to make up a fully functional and compliant lighting control