# Shared Flashcard Set

## Details

Show Light Engineering
Reading Assignment Study Guide - Chap 3
25
Engineering
03/08/2013

Term
 Name 5 common elements found in all automated lighting systems.
Definition
 •Rigging System•Power Distribution•Data Distribution•Control System•Luminaires or Fixtures
Term
 What is a normal size for light duty truss?
Definition
 12x12” or 12x18”
Term
 What is a normal size for medium duty truss?
Definition
 20.5x20.5” square
Term
 What is a normal size for heavy-duty truss?
Definition
 20.5x30”
Term
 What is the standard type of pipe that is used as a batten in the United States?
Definition
 1.5” schedule 40 black iron pipe
Term
 What is the job of a power distribution system?
Definition
 To safely and reliably distribute power to each of the electric loads in the system while providing protection from overloading and short circuits.
Term
 What are the colors codes for the following cable in the USA 3phase system?
Definition
 GROUND = GreenNEUTRAL = WhitePHASE 1 = Black PHASE 2 = RedPHASE 3 = Blue
Term
 What are the colors codes for the following cable in the New European 3phase system?
Definition
 GROUND = Green w/ Yellow StripeNEUTRAL = BluePHASE 1 = Brown PHASE 2 = BlackPHASE 3 = Grey
Term
 What does a distribution panel do?
Definition
 It serves two purposes: It divides the incoming power into branch circuits and provides the overcurrent protection equipment (circuit breakers) for them.
Term
 What can make a thermal circuit breaker trip sooner than it should?
Definition
 Hot Environments
Term
 How does a magnetic circuit breaker measure current flow?
Definition
 By sensing the magnetic around a conductor in direct proportion to the current.
Term
 What is the maximum current interrupt rating for a breaker that is used in conjunction with 14 AWG circuits?
Definition
 15amps
Term
 What is the maximum current interrupt rating for a breaker that is used in conjunction with 12 AWG circuits?
Definition
 20amps
Term
 What is the maximum current interrupt rating for a breaker that is used in conjunction with 10 AWG circuits?
Definition
 30amps
Term
 What is the definition of a branch circuit?
Definition
 A branch circuit is a set of wires (hot, neutral, and ground or earth in a single phase system) that carries power from the last overcurrent protection device to one or more electrical loads.
Term
 What 2 things (dealing with the cable) can cause the voltage to drop in a branch circuit?
Definition
 When branch circuits are run a long way and/or when the wire gauge is small.
Term
 What is the name of the set of codes and standards governing the installation and operation of electrical equipment in the United States?
Definition
 The National Electrical Code, NFPA 70 (NEC)
Term
Definition
 1897
Term
 What is different between data grade cables and microphone cables?
Definition
 Data cables are low-impedance Microphone cables are high-impedance
Term
 What does ACN stand for?
Definition
 Architecture for Control Networks
Term
 What are the two main functions of the electrical system in an automated light?
Definition
 To supply the power for the lamp circuit and to supply low-voltage power to the electronics systems and electromechanical systems.
Term
 What is the primary function of the electronics system?
Definition
 To take the control signal input, translate it to computer code, and execute commands in the form of motor movements or, in the case of electronic dimming, lamp voltage.
Term
 What does the electromechanical system do?
Definition
 Converts electrical energy into movement.
Term
 What is the mechanical system made up of?
Definition
 It is made of moving parts such as parts such as gears, belts, bearings, axles, and the chassis.
Term
 Name seven things that can be found in the optical system.
Definition
 •Reflectors•Lamps•UV and I/R filters•Color Media•Gobos•Lenses•Effects
Supporting users have an ad free experience!