Question 1

The ungrounded "hot" conductor of a 120-volt residential branch circuit is terminated to the __________ terminal on a duplex receptacle.

Accepted Answer

The ungrounded "hot" conductor of a 120-volt residential branch circuit is typically terminated to the brass terminal on a duplex receptacle. This is a standard wiring practice to ensure proper electrical function and safety.

Question 2

A GFCI circuit breaker is easily recognizable by the "push-to-test" button and the __________.

Accepted Answer

GFCI circuit breakers are identifiable by the "push-to-test" button and the length of white wire attached to them, which is the neutral wire necessary for their operation.

Question 3

Which of the following switches has ON/OFF marked on the switch handle?

Accepted Answer

Double pole switches are typically marked with ON/OFF because they control the power to two different circuits or devices, whereas three way and four way switches control a single circuit or device and do not necessarily have markings for ON/OFF.

Question 4

The ____________________ of a conductor refers to its ability to carry current.

Accepted Answer

The answer of The ____________________ of a conductor refers to...

Question 5

__________ are the most often used type of overcurrent protection device used in residential wiring.

Accepted Answer

Circuit breakers are the most often used type of overcurrent protection device used in residential wiring. They are safer, easier to reset, and provide more precise protection than fuses.

Question 6

A part of an electrical box that is designed to be removed so that a cable or raceway can be connected to the box is called a __________.

Accepted Answer

A knockout is a removable section in an electrical box that is designed to allow a cable or raceway to be connected to the box. This allows for flexibility in the installation and placement of the box. Mounting brackets, cable clamps, and plaster ears are all components of an electrical box, but they do not specifically refer to the removable section used for cable or raceway connections.

Question 7

A _____ is described as a factory assembly of two or more conductors that has an overall outer sheathing that can be nonmetallic or metallic.

Accepted Answer

A cable is described as a factory assembly of two or more conductors that has an overall outer sheathing that can be nonmetallic or metallic.

Question 8

__________ plug fuses are considered nontamperable and are used in new installations requiring plug fuses.

Accepted Answer

Type S plug fuses are considered nontamperable and are designed to only fit into Type S fuse holders, making them a safer option for new installations. Edison-base plug fuses are older and less safe, while cartridge and plug fuses may be tampered with and should only be used in certain circumstances.

Question 9

A switch that is used on 240-volt residential branch circuits to control a load from one location is called a __________ switch.

Accepted Answer

A double-pole switch is used for 240-volt circuits, while a single-pole switch is used for 120-volt circuits. An occupancy switch is used to automatically control lighting based on motion detection. A combination switch is a switch and receptacle in one device, and is not related to controlling a 240-volt load from one location.

Question 10

All ____________________ boxes must be accessible after they are installed.

Accepted Answer

The answer of All ____________________ boxes must be accessible after...

Question 11

If a switching device has the marking CU ONLY on it, an electrician can use only __________ wire with the device.

Accepted Answer

CU ONLY indicates that the device is designed to be used only with copper wire. Copper-clad aluminum and aluminum wires should not be used with this device.

Question 12

The ______ is the device that is inserted into a receptacle to establish a connection between the conductors of the attached flexible cord and the conductors connected to the receptacle.

Accepted Answer

An attachment plug is specifically designed to establish a connection between the conductors of a flexible cord and a receptacle. Outlets are the receptacles themselves, fuses are safety devices that protect against overcurrent, and connectors could refer to a variety of devices used to join two or more conductors.

Question 13

Almost all 15 or 20-amp, 125-V receptacles required in a house must be __________.

Accepted Answer

Tamper-resistant receptacles are now required by the National Electrical Code (NEC) for almost all 15 or 20-amp, 125-V receptacles in houses. This is to prevent children from inserting foreign objects into the receptacle and potentially receiving a shock. Terminated, color coded and self-grounding are not mandatory requirements for receptacles in a house.

Question 14

Romex is a trade name used by electricians to refer to __________.

Accepted Answer

Romex is a trade name for nonmetallic sheathed cable (NM), which consists of two or more insulated conductors and a bare ground wire wrapped in a non-metallic sheath.

Question 15

A weatherproof enclosure designed to give protection from falling dirt, rain, snow, sleet, and windblown dust is classified as a _____ enclosure and will need to be installed for outside applications.

Accepted Answer

NEMA 3R enclosures are designed for outdoor use and provide protection from falling dirt, rain, snow, sleet, and windblown dust. NEMA 1 enclosures are designed to provide protection against accidental contact with the enclosed equipment, but do not provide protection from the elements. NEMA 2 enclosures provide protection against dripping water, but are not suitable for outdoor use. NEMA 12 enclosures provide protection against dust, dirt, dripping water, oil, and coolant, but are not designed for outdoor use.

Question 16

Type __________ cable is used for underground service entrance installations.

Accepted Answer

USE cable (Underground Service Entrance Cable) is specifically designed for underground installation as a service entrance cable. SE (Service Entrance Cable) is suitable for both overhead and underground installation, but it is not specifically designed for underground installation. UF (Underground Feeder Cable) is suitable for direct burial but not specifically designed as a service entrance cable. NM-B (Non-Metallic sheathed cable) is only suitable for indoor use and cannot be used for underground installations.

Question 17

The NEC requires rigid metal conduit to be supported within __________ feet of each box and then no more than every __________ feet thereafter (general rule).

Accepted Answer

The NEC requires rigid metal conduit to be supported within 3 feet of each box and then no more than every 10 feet thereafter.

Question 18

CO/ALR marked on a receptacle indicates that __________ conductors may be terminated to it.

Accepted Answer

CO/ALR marked on a receptacle indicates that copper, copper-clad aluminum, and aluminum conductors may be terminated to it, covering all the options provided.

Question 19

When two or more electrical device boxes are joined together for the purpose of holding more than one device it is called __________.

Accepted Answer

This is commonly known as gang boxes or multi-gang boxes. They allow for multiple devices to be installed within a single location, saving space and simplifying wiring.

Question 20

A _____ is a type of electrical panel that contains the main disconnecting means for the residential service entrance as well as the fuses or circuit breakers used to protect circuits and equipment like electric water heaters, ranges, dryers, and lighting.

Accepted Answer

A load center is commonly known as an electrical panel, where the main disconnecting means for the residential service entrance and the fuses or circuit breakers used to protect circuits and equipment are installed. Safety switch is a device used for emergency shutdown, subpanel is a smaller panel that is fed from a larger panel, and a meter socket is a device used to hold the electric meter.

Quiz 2: Hardware and Materials Used in Residential Wiring

The ungrounded "hot" conductor of a 120-volt residential branch circuit is terminated to the __________ terminal on a duplex receptacle.

A GFCI circuit breaker is easily recognizable by the "push-to-test" button and the __________.

Which of the following switches has ON/OFF marked on the switch handle?

The ____________________ of a conductor refers to its ability to carry current.

__________ are the most often used type of overcurrent protection device used in residential wiring.

A part of an electrical box that is designed to be removed so that a cable or raceway can be connected to the box is called a __________.

A _____ is described as a factory assembly of two or more conductors that has an overall outer sheathing that can be nonmetallic or metallic.

__________ plug fuses are considered nontamperable and are used in new installations requiring plug fuses.

A switch that is used on 240-volt residential branch circuits to control a load from one location is called a __________ switch.

All ____________________ boxes must be accessible after they are installed.

If a switching device has the marking CU ONLY on it, an electrician can use only __________ wire with the device.

The ______ is the device that is inserted into a receptacle to establish a connection between the conductors of the attached flexible cord and the conductors connected to the receptacle.

Almost all 15 or 20-amp, 125-V receptacles required in a house must be __________.

Romex is a trade name used by electricians to refer to __________.

A weatherproof enclosure designed to give protection from falling dirt, rain, snow, sleet, and windblown dust is classified as a _____ enclosure and will need to be installed for outside applications.

Type __________ cable is used for underground service entrance installations.

The NEC requires rigid metal conduit to be supported within feet of each box and then no more than every feet thereafter (general rule) .

CO/ALR marked on a receptacle indicates that __________ conductors may be terminated to it.

When two or more electrical device boxes are joined together for the purpose of holding more than one device it is called __________.

A _____ is a type of electrical panel that contains the main disconnecting means for the residential service entrance as well as the fuses or circuit breakers used to protect circuits and equipment like electric water heaters, ranges, dryers, and lighting.

Quiz 2: Hardware and Materials Used in Residential Wiring

The ungrounded "hot" conductor of a 120-volt residential branch circuit is terminated to the __________ terminal on a duplex receptacle.

A GFCI circuit breaker is easily recognizable by the "push-to-test" button and the __________.

Which of the following switches has ON/OFF marked on the switch handle?

The ____________________ of a conductor refers to its ability to carry current.

__________ are the most often used type of overcurrent protection device used in residential wiring.

A part of an electrical box that is designed to be removed so that a cable or raceway can be connected to the box is called a __________.

A _____ is described as a factory assembly of two or more conductors that has an overall outer sheathing that can be nonmetallic or metallic.

__________ plug fuses are considered nontamperable and are used in new installations requiring plug fuses.

A switch that is used on 240-volt residential branch circuits to control a load from one location is called a __________ switch.

All ____________________ boxes must be accessible after they are installed.

If a switching device has the marking CU ONLY on it, an electrician can use only __________ wire with the device.

The ______ is the device that is inserted into a receptacle to establish a connection between the conductors of the attached flexible cord and the conductors connected to the receptacle.

Almost all 15 or 20-amp, 125-V receptacles required in a house must be __________.

Romex is a trade name used by electricians to refer to __________.

A weatherproof enclosure designed to give protection from falling dirt, rain, snow, sleet, and windblown dust is classified as a _____ enclosure and will need to be installed for outside applications.

Type __________ cable is used for underground service entrance installations.

The NEC requires rigid metal conduit to be supported within __________ feet of each box and then no more than every __________ feet thereafter (general rule) .

CO/ALR marked on a receptacle indicates that __________ conductors may be terminated to it.

When two or more electrical device boxes are joined together for the purpose of holding more than one device it is called __________.

A _____ is a type of electrical panel that contains the main disconnecting means for the residential service entrance as well as the fuses or circuit breakers used to protect circuits and equipment like electric water heaters, ranges, dryers, and lighting.

The NEC requires rigid metal conduit to be supported within feet of each box and then no more than every feet thereafter (general rule) .