Electrical chapter 13

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

(True or False) The white wire used in a switch loop wired with a two wire cable like type NM must be re-identified this is normally done with black tape

True

(True or False) There is no need to connect a white insulated grounded conductor to any single pole double pole three-way or four way switch in a residential switching circuit

True

(True or False) When a white wire is used as a traveler conductor for three-way and four-way switching, is is required to be re-identified as an ungrounded conductor

True

which of the following are the ame as gerneral use snap switches

all of the above

when wiring a house with a cable wiring method a________________ insulated wire cannot be used in a switch loop switching arrangement

all of the above can be used

four way switches must be placed ________________ in the circuit

between the three way switches

when installing a receptacle so that one half is controlled a switch and the other half is hot all the time the switch controlled half should be located on the_________ of the receptacle

bottom

_____________switch devices consist off two switches on one yoke or strap

combination

a switch type that raises or lowers the lap brightness of a lighting fixture is a _______________ switch

dimer

which of the following switches tend to generate the most heat

dimmer switches

an________________ switch is used to control a 240 volt load such as a water heater in a residential wiring system

double pole

(True or False) like a four way switch a double pole switch has four terminal screws and the toggle has on and off written on it

false

A/an _____________ is a device that detects when a person has entered a room and switches on the room lighting;

occupancy sensor

Three way switches are always installed in _____________

pairs

The most common switch used in residential wiring is the ___________switch

single pole

a switching arrangement where the feed is brought to the lighting outlet first and a two wire cable is run from the lighting outlets to the switch is called an ________________

switch loop

_____________ switches are used to control one or more lighting loads for two or more locations

three way

four way switches are always installed between two ___________ switches

three way

when installing a ceiling suspended paddle fan with alighting kit and you want to have separate control of the fan and light a ____________ must be run from the switching location to the paddle fan

three-wire cable

A/an____________is a device that controls the flow of electricity on a circuit for a certain amount of time

timer

The brass-colored terminals on a three-way switch are called the ___________ terminals

travelers

(True or False) A permanent black marker can be used to re-identify a white insulated conductor as a hot conductor in a cable

true

(True or False) Dimmer switches are available in single pole three way and four way models

true

(True or False) Like single-pole switches, dimmer switches always come from the factory with screw terminals

true

(True or False) Motor loads not exceeding 80% of the ampere rating of the switch at its rated voltage are permitted to be controlled by alternating current general use snap switches

true

(True or False) When re-identifying a white insulated conductor as a hot ungrounded conductor the identifying mark must completely encircle the conductor

true

(True or False) a double pole switch can be used to control tow 120-volt circuits

true

To control a lighting outlet from four locations a circuit requires______________

two three way switches and two four way switches

The national electrical code requires that all switching be done in the________________ circuit conductor

ungrounded

when wiring a house with a conduit wiring method a ___________ insulated wire cannot be used in a switch loop as a hot conductor

white (re-identified)

the number of conductors required to be installed between three-way and four-way switches is ____________

3

(True or False) If the circuit grounding conductor is connected to the green grounding terminal on the switch there is no need to ground the metal device box in which the switch is installed

False

(True or False) Switch loops are not permitted in three way switch circuits

False

(True or False) When wiring a house using conduit the NEC permits a white insulated conductor to be used as a hot conductor in a switch loop as long as it is re-identified

False

The black colored common terminal on a three way switch should always have a__________ connected to it

black

(True or False)Switches installed in metal boxes are considered grounded as long as the metal strap of the switch is touching the metal box after installation

true


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