eSET Lighting and Electrics

See also: First Electric

See also: Pin Connector

See also: Two-fer

Pronounced 2-aught; single conductor cable with wire size "2/0" on jacket; commonly used for feeder cable

See also: Pin Connector

See also: Three-fer

Pronounced 4-aught; single conductor cable with wire size "4/0" on jacket; commonly used for feeder cable

Electrical accessory that transitions between dissimilar connectors; may be a molded unit, box or cable assembly

See also: Amperes

Unit of measure for the quantity of electricity flowing in a conductor Synonym: A, Amp, Current

Analog Multiplexing protocol for transmitting control information from a console to a dimmer or other controllable device Synonym: AMX, USITT AMX192

See also: Front of House (FOH) Beam

Obsolete term See also: Flameproof Apron

See also: Automated Luminaire

Lighting console capable of controlling automated luminaires

Lighting instrument with attributes that are remotely controlled Synonym: Automated Fixture, Automated Light, Computerized Light, Intelligent Light, Motorized Light, Mover, Moving Light, More...

Remotely controlled pan and tilt device Synonym: Yokie

A lighting source that is behind the talent or subject from the viewers perspective Synonym: Backs, Back Wash, Bx, Hair Light, Rim Light

See also: Backlight

See also: Balcony Rail

Lighting position mounted in front of or on the face of the balcony Synonym: Balcony Front

Electrical device required to maintain proper voltage to a discharge type (fluorescent, HMI®, HID) lamp

See also: Feeder Cable

An electrical cable with no plug connector

Device that attaches to the front of a luminaire that allows for beam- shaping by blocking the beam of light

Trade Name (Marinco Electrical Group) See also: Pin Connector

Self-contained DC electrical power source, designated by voltage or size

Non-lensed luminaire with a primary and secondary reflector to produce an intense, tight beam with minimal spill

Trade name (Lee Filters) See also: Black Studio Foil

See also: Ultraviolet Light

Black coated non-reflective aluminum foil Synonym: Black Foil, BlackWrap™, Cinefoil™

The total absence of light on stage or set

Trade name (GAMProducts) See also: Black Studio Foil

See also: Running Lights

See also: Lighting Console

See also: Light Board Operator

Freestanding support for equipment

Horizontal pipe attached to a vertical boom

Bottom member of a boom that spreads the weight over a wider area and provides an anchor to the floor holding the boom in a vertical position

See also: Striplight

See also: Lamp

Hanging positions mounted in the house on the side walls or seating boxes of the theater Synonym: Side Cove, Slot

Truss consisting of 4 linear members See also: Truss

See also: Cuculoris

Adapter consisting of multiple plugs (M) wired to a single multipin (FM) connector; may be a box or a cable assembly Synonym: Break-in Box, Fan-in

Adapter consisting of multiple receptacles (FM) wired to a single multipin (M) connector; may be a box or a cable assembly Synonym: Break-out Box, Fan-out

See also: Circuit Breaker

Walkway, catwalk to access technical areas

See also: Followspot Positions

Non-lensed luminaire with a reflector that creates a wide flood of light See also: Lamp

See also: Company Switch

See also: Cable Crossover

See also: Feeder Cable

See also: Coupler

Failed lamp or color media that is burned through

Clamp shaped like a "C" that is used to attach any item to a pipe

Collapsible stand with telescoping shaft, and legs that nest for storage

See also: Clothes Pin

See also: Stage Cable

Portable, temporary cable protectors used to cover and protect cables routed through personnel or vehicle traffic areas Synonym: Bumble Bee®, Cable Mat, Cable Ramp, Cable Trough, More...

Cable from above to a lower level

See also: Cable Crossover

Strap, tie, or cord used to bundle and dress multiple cables or contain coiled cable Synonym: Sash Cord, Tie Line, Tie-Wrap, Velcro® Strap, Wire Tie, Wire Wrap, Zip Tie =Lighting More...

Overhead cable support system consisting of an open topped tray used to route cables between points within the facility

Enclosed cable tray often built in the floor Synonym: Floor Trough

See also: Stage Cable

See also: Single Pole Locking Connector

See also: Single Pole Locking Connector

Electrical - Trade name (Cooper Crouse Hinds®); also CamLok, Cam Lok See also: Single Pole Locking Connector

See also: Feeder Cable

See also: Luminaire ◊ PAR Can Lighting & Electrics

See also: Yoking Out

See also: Circuit Breaker

See also: Cuculoris

Specific control parameter encompassing single or multiple device attributes (lighting dimmers, audio signals, etc.) controlled as a unit

Paperwork designating the connection of dimmer circuits to channels of control

Lighting effect in which luminaire output fluctuates in a repeating sequence

See also: Coupler

See also: Coupler

See also: Coupler

Trade Name (Cinch® Connectors) Flat blade multicircuit connectors Synonym: CJ, Jones Connector

Trade name (Rosco) See also: Black Studio Foil

Path for electricity to flow from the source, through a conductor, to a device(s)

Mechanical/Electrical device that is designed to automatically open (trip) if the current exceeds the rated level protecting the circuit; may be operated manually Synonym: Breaker, CB, OCPD, Overcurrent Protective Device

See also: Cinch® Jones Connector

See also: Janitor Light

See also: Music Stand Light

Wooden clamp with a spring or fork Synonym: C47

Manual or automated device for changing color of the light from a luminaire

Top hat with color media holder Synonym: Gel Extender

Metal or heat resistant device that holds the color media in front of a luminaire Synonym: Gel Frame

See also: Color Media

Translucent material used to color light Synonym: Color Glass, Dichroic, Gel, Roundels

Segmented manual or motorized rotating wheel with color media in front of a light source

Electrical panel with disconnecting means for the supply of significant amounts of electrical power to portable equipment Synonym: Bull Switch, Disconnect, Panel, Power Panel

See also: Automated Luminaire

Material through which electricity will flow Synonym: Cable, Feeder, Leads

Metal or plastic tubing used to route and protect electrical and data wiring Synonym: EMT

Series of electrical receptacles or pigtails spaced in a metal wireway providing power and sometimes data outlets Synonym: Raceway

See also: Lighting Console

See also: Moving Light Console

See also: Non Dim

An unbroken electrical path

Low voltage data cable

See also: Moving Light Console

See also: Lighting Console

An electrical receptacle designated to access power in places not normally found

See also: Cuculoris

See also: Cuculoris

See also: Strain Relief

Hinged pipe clamp for securing two pieces of pipe or equipment Synonym: Burger, Cheeseboro, Cheeseborough, Cheeseburger, Scaffolding Clamp, Scaff Clamp, half coupler

See also: Front of House (FOH) Beam

Person in charge of a specific crew and to whom stagehands report

Material placed in front of an luminaire that creates a pattern in the light projected Synonym: Branch-a-laris, CeloCuk, Cookie, Coo-koo, Cucoloris

Light controlled from the stage manager's station to signal actors or crew

Paperwork with instructions for the execution of a cue

See also: Cuculoris

See also: Amperes

See also: Cyclorama Light

Non-lensed luminaire with an asymmetrical reflector, primarily used for lighting backdrops Synonym: Cyc light

See also: Boom

Performance crew dealing with operation of lights and other electrical components on stage

See also: Lighting Console

See also: Dichroic Filter

See also: Color Media

Style of glass light filter that reflects unwanted frequencies instead of absorbing them Synonym: Dichro

Translucent material that spreads or disperses light, lowering contrast

Electrical device between the power source and a luminaire used to adjust the intensity of the lamp

See also: Dimmer Land

Area where portable dimmers are located Synonym: Dimmer Beach

Portable or permanent equipment racks that contain dimmers Synonym: Dimmers, Packs, Rack

Light sources that generate light by sending an electrical discharge through an ionized gas Synonym: HMI, HID, Plasma

See also: Mirror Ball

See also: Company Switch

Flow-through device in the feeder circuit that provides protected circuits Synonym: Distro Box

See also: Distribution Box

See also: DMX512

Digital Multiplexing protocol developed by USITT for communicating control information between a console or other controller and dimmers or other stage equipment Synonym: ANSI E1.11, More...

See also: Safety Cable

Square plate with a circular hole that is placed in front of an Ellipsoidal Reflector Spotlight to sharpen the image

Device, internal or external, that mechanically dims a light

Portable electrical outlet box wired to a permanent electrical junction overhead Synonym: Pendant

See also: Outlet

See also: Ground

See also: Grounding

See also: Parallel Blade Grounded Connector

See also: Plug Strip

Luminaire used to project images from rotating glass or metal disks

Device attached to the front of a luminaire that provides animated effects

See also: Stage Electric

See also: Stage Electric

See also: Stage Electric

Conductive device for joining electrical circuits Synonym: Plug, Receptacle

Vinyl adhesive tape typically in a variety of colors

Flow of electromagnetic energy (electrons) through a conductor

See also: Entertainment Electrician

See also: Ellipsoidal Reflector Spotlight

Luminaire which projects light via an elliptical reflector and a lens system Synonym: Ellipsoidal, ERS, Leko®, Profile, Source 4®

Non-lensed luminaire with an elliptical shaped reflector that produces a wide diffused wash of light Synonym: ERF, scoop

See also: Conduit

Crew member who hangs, adjusts, operates lighting equipment, and electrical distribution Synonym: Electrics Crew, Lighting Technician

See also: Running Lights

See also: Elliptical Reflector Flood

See also: Ellipsoidal Reflector Spotlight

A networking standard for data transmission

See also: Cyc Light

See also: Feeder Cable

Portable multiconductor or multiple single conductor power cables to carry power from the source to a distribution point Synonym: Banded, Bundle, Camcable, Feeder

See also: Field of Light

When the beam of light (lumens or foot-candles) is at least 10 % of maximum intensity Synonym: Field

See also: Cable Crossover

See also: First Electric

First pipe batten over the stage upstage of the proscenium or plaster line that is designated for stage lighting equipment Synonym: First Elec, 1E, LX1,

See also: Luminaire

Cloth that protects drapery and scenery from the heat of the equipment in near proximity Synonym: Asbestos (obsolete) Skirt, Nomex®, Zetex®

Truss consisting of 2 linear members See also: Truss

See also: Fluorescent Luminaire

See also: Floor Pocket

Dedicated enclosure recessed in the floor with a hinged cover Synonym: Floor Box, Stage Pocket

Short telescoping or fixed height lightweight vertical mounting device to hold lights or speakers Synonym: Stand

See also: Cable Trough

See also: Fluorescent Luminaire

Luminaires containing one or more fluorescent lamps which produce a soft diffused light Synonym: Flo, Fluorescent Fixture

Process of aiming a luminaire so that the beam falls in the desired location and shape

Luminaire that is operator controlled to follow action on stage Synonym: Front Light, Spot

See also: Followspot Position

Electrician or Stagehand who operates followspots Synonym: Frontlight Operator, Spot Operator

Lights mounted horizontally around the down stage lip of the stage at floor level - often some form of strip light

Movable metal plates, in an ellipsoidal reflector spotlight, that shape the light beam Synonym: Shutter

Luminaire which projects a soft-focus light via a spherical reflector and a flat, concentric ringed lens

A lighting source that illuminates the talent or subject from the direction of the viewers point of view

Lighting position mounted in the house ceiling in front of the stage Synonym: Antepro, Ante-proscenium, AP, Cove, Port Position

See also: Followspot Operator

Overcurrent protection device that fails open (blows) when the current exceeds its rating

Secondary focal point of an ellipsoidal reflector spotlight where accessories (gobo, iris, shutters) can shape the light beam

See also: Color Media

See also: Swatch Book

See also: Color Extender

See also: Color Frame

See also: Power Generator

See also: Power Generator

See also: Ground Fault Circuit Interrupter

See also: Ground Fault Circuit Interrupter

Single lamp in a safety cage on a floor stand that remains illuminated on stage when the theater is not in use

See also: Lamp

See also: Pattern

See also: Pattern Holder

See also: Pattern Rotator

See also: Pattern Slot

Warning given when the stage is going to a blackout Synonym: Going to Black

See also: Going Dark

See also: Pin Connector

See also: Ground Conductor

Electrical conductor that is physically connected to the Earth

Conductor that physically connects circuit to the Earth Synonym: Green Wire (North America), Ground Wire

Mechanical/Electrical device designed to protect from electrical shock hazard by interrupting a circuit Synonym: GFCI, GFI

See also: Ground Conductor

Creating a continuous conductive path to the earth Synonym: Earthing

See also: Twist Lock Connector

See also: Backlight

Illumination that is outside the controlled beam of light Synonym: Spill

A clamp that secures a device to a pipe See also: Coupler

See also: Tungsten-halogen lamp

See also: Light Plot

Physical connection of a circuit to a dimmer Synonym: Patch

Electrical equipment that is directly wired to a circuit without having a connector

See also: Head High

Luminaire mounted at head height above the floor Synonym: Head, High

Warning given when someone overhead has dropped something or a dangerous situation is occurring overhead

Transparent filter designed to extend the life of flexible color media

See also: Head Highs

Audience lighting Synonym: House

Light source for fiber optic displays

Light source created by a filament that glows when current passes through it

See also: Luminaire

Nonconductive material around the electrical conductor

See also: Automated Luminaire

Device that adjusts the beam circumference larger or smaller

Lighting designated to be on for the cleaning of that space Synonym: Cleaning Light

See also: Cinch® Jones Connector

A short extension cable Synonym: Shortie

Trade name (Hubbell) Wire mesh strain relief

See also: Shinbuster

See also: Twist Lock Connector

See also: Twist Lock Connector

Truss consisting of 2 linear members See also: Truss

Transparent or translucent glass housing containing a filament and/or gas that produces light when voltage is applied Synonym: Bottle, Bulb, Globe, Light Bulb

Prewired section of pipe with designated outlets and attachment points

Electrical cable assembly for connecting a luminaire to its plug Synonym: Lead, Pig Tail, Tail

See also: Lighting Designer

See also: Lamp Lead

See also: Conductor

Light Emitting Diode

Luminaire which uses light emitting diodes as light source

Trade name (Philips Strand Lighting) See also: Ellipsoidal Reflector Spotlight

See also: Luminaire

Hanging positions shaped like ladders

Person who may set up, program and operate the lighting console Synonym: Board Op

See also: Boom

See also: Lamp

See also: Luminaire

See also: Stage Electric

Scale drawing that shows the locations of lighting equipment Synonym: Hang Plot, Lighting Plan, Plot

See also: Floor Stand

See also: Boom

Pipe battens dedicated for attaching luminaires and stage equipment Synonym: Elec, Electric Batten, Electric, Light Pipe

Vertical mounting position for lighting and other electrical equipment Synonym: Boom

Bottom element of a temporary lighting boom in contact with the floor Synonym: Boom Base

Lighting position that consists of a catwalk with pipes mounted on one or both sides

Device that controls lighting and stage equipment Synonym: Board, Console, Controller, Desk

Persons involved in hanging, circuiting, focusing, maintaining and running the entertainment light systems

1) A designed lighting effect or image; 2) Action that an electrician or light board operator does during the course of a performance Synonym: Look, Q, State

Artistic vision of the lighting designer

Person who creates the lighting design for a production Synonym: LD

Person who stays with the show to maintain lighting design

Equipment that is available at a venue or is used in a production

Documentation of the lighting design that may include the following: light plot, magic sheet, cue sheet, channel hookup, instrument schedule, shop order, etc.

See also: Light Plot

See also: Entertainment Electrician

Scaffolding or purpose built structures on which lighting equipment is attached

See also: Boom

Lensless luminaire used to project scenic images

See also: Lighting Cue

Bundled multicables

Paperwork with information about each luminaire used for a show: color, circuit, channel, pattern, etc.

Flow-through device in the feeder circuit without overcurrent protection, typically used for branch circuits

See also: First Electric

See also: Mid High

Luminaire mounted waist high above the floor Synonym: Mid

Trade name (Lighting and Electronics) See also: MR16 Striplight

Ball with mirrored facets that reflects specks of light Synonym: Disco Ball, Shower Ball

Device that allows one to view or hear real-time performance or operation of systems Synonym: Audio Monitor, Video Monitor, Rigging Control Monitor

See also: Automated Luminaire

See also: Pass-through

See also: Moving Light Console

Lighting console dedicated to automated luminaire Synonym: Control Desk, Console Desk, Lighting Console, Moving Light Board

Person who operates moving light system