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