TLE

Cards (19)

  • Which of the following is a recommended protective device for handling power surges in electrical system? voltage stabilizer
  • when installing circuit breakers to panel board, where should the main breaker be placed?
    upper right side of the panel board
  • this enclusure inspired the design of meshed conductors lightning protection system?
    Faraday Cage
  • in installing the lightning protection system, the ground rod should not exceed____ohms?
    25
  • what kind of switch is used in safety switches?
    double pole, single throw
  • which type of lightning protection system is particularly used to protect open areas in the absence of architectural support or hazardous storage?
    air termination lightning protection system
  • which protective device is commonly used to prevent electrical shocks in a home or building?
    circuit breaker
  • this is where all the ground and neutral wires are attached to the electrical panel?
    ground bus
  • this type of earthing system follows a method of burying a copper plate or galvanize plate in an earth pit?
    Plate earthing
  • it is called a "cabinet of circuit breakers"?
    panel board
  • this type of circuit breaker test allows the checking of power frequency and the capacity to withstand impulse voltage?
    dielectric test
  • this is a type of circuit breaker that trips through an electromagnet attracting an armature?
    magnetic type circuit breaker
  • what did benjamin franklin invent in 1753?
    lightning rods
  • when installing lightning protection systems, what is the purpose of a lightning rod?
    to attract lightning strikes away from the structure
  • this is an overcurrent protection device that contains a circuit operating fusible member, which is heated and cut off by the overcurrent that passes through it?
    Fuse
  • What is the primary purpose of installing electrical protective devices in distribution system?
    to reduce the risk of electrical fires
  • what kind of test is performed to check if the fuse in the safety switch is blown?
    continuity test
  • in what setting should the multimeter be set when testing a circuit breaker?
    volts AC setting
  • in grounding systems, what is the role of an earthing electrode?
    to provide a path for fault currents to the ground