Electrical Year 2 Quarter 1

A _____ is a single unit that provides complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.

dwelling unit

The Code contains provisions considered necessary for safety, which will not necessarily result in _____

efficient use, convenience, good service or future expansion of electrical use

The NEC applies to the installation of _____

electrical conductors and equipment within or on public and private buildings; outside conductors and equipment on the premises; optical fiber cables and raceways

A hard hat should be worn in working areas where there is a possible danger of head injury from ____

impact, electrical shock or burns, falling or flying objects

Shock can result when your body is _____.

in contact with two wires of an electric circuit

Proper lockout/tagout of electrically-powered equipment includes _____.

indicating circuits or pieces of equipment are out-of-service on tag

The materials that are considered potential fuels include _____.

lumber, gasoline, chemicals

(n) _____ energy source requires lockout/tagout

mechanical, electrical, hydraulic

The type(s) of hand hazards that you can be exposed to on a jobsite include(s) _____.

mechanical, environmental, chemical

If required to wear a respirator, you must first have a _____.

medical evaluation

A building that contains three or more dwelling units is called a "_____."

multifamily dwelling

The receptacle outlet required for indoor electrical service equipment shall not be required to be installed for _____.

one or two family dwellings

Any current in excess of the rated current of equipment or the ampacity of a conductor is called "_____."

overcurrent

A conductor of electricity includes _____.

perspiration

Lockout devices should be used on _____.

power sources

The first step in accomplishing lockout/tagout is to _____

prepare for shutdown

Combustible dust is defined as dust particles that are 500 microns or smaller in diameter and _____ when dispersed and ignited in air.

present a fire or an explosion hazard

Toxic air contaminants can come from _____

previously stored material; use of coatings, cleaners, and preservatives; work being performed

The PASS method of extinguisher use stands for _____

pull, aim, squeeze, sweep

A person who is by education or professional standing, or who by extensive knowledge, training, and experience has successfully demonstrated their ability to solve or resolve problems is called a _____.

qualified person

A handhole enclosure is an enclosure for use in underground systems, provided with an open or closed bottom, and sized to allow personnel to _____.

reach into but not enter

An opening in an outlet box where one or more receptacles have been installed is called "_____."

receptacle outlet

After servicing of electrical or mechanical equipment, you should first _____

replace all machine guards

If an emergency occurs, you should know _____

reporting procedures; escape procedure; rescue and medical duties

Before entering confined spaces, you should know the ____

required protective and emergency equipment, nature of the hazards, necessary precautions

120V, single phase, 15A and 20A branch circuits supplying outlets and devices installed in guest _____ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).

rooms and suites

The type of hand protection that should be used to prevent exposure to caustic chemicals is _____ gloves.

rubber, vinyl, neoprene

The selection and installation of overcurrent protective devices so that an overcurrent condition will be localized to restrict outages to the circuit or equipment affected, is called "_____."

selective coordination

In the NEC, the word(s) "_____" indicate a mandatory requirement.

shall or shall not

The prospective symmetrical fault current at a nominal voltage to which an apparatus or system is able to be connected without sustaining damage exceeding defined acceptance criteria is known as the "_____."

short circuit current rating

Connected to ground without the insertion of any resistor or impedance device is referred to as "_____."

solidly grounded

Conductive optical fiber cables contain noncurrent carrying conductive members such as metallic _____.

strength members, vapor barriers, and/or armor or sheath

If an incident results in any fatalities or three or more persons hospitalized, your employer must notify _____.

the Occupational Safety and Health Administration

The two types of grounding are _____.

the electrical circuit and electrical equipment

If your company acts as an outside contractor, you must be informed of _____

the meaning of locks or tags; lockout/tagout procedures

By special permission, the authority having jurisdiction may waive specific requirements in this Code where it is assured that equivalent objectives can be achieved by establishing and maintaining effective safety.

true

Communications wiring such as telephone, antenna, and CATV wiring within a building shall not be required to comply with the installation requirements of Chapters 1 through 7, except where specifically referenced in Chapter 8.

true

NFPA 70E-Standard for Electrical Safety in the Workplace, provides information to help determine the electrical safety training requirements expected of a qualified person.

true

Nonconductive optical fiber cable is a factory assembly of one or more optical fibers with an overall covering and containing no electrically conductive materials.

true

The common point on a wye connection in a polyphase system is a "neutral point."

true

Utilities may include entities that are designated or recognized by governmental law or regulation by public service/utility commissions

true

An example of a confined space is _____

ventilation ducts

A tag acts as a _____ device.

warning

An enclosure constructed so that moisture will not enter the enclosure under specific test conditions is called "_____."

waterlight

A(n) _____ enclosure is constructed or protected so that exposure to the weather will not interfere with successful operation.

weatherproof

A single receptacle is a single contact device with no other contact device on the same _____.

yoke

A(An) _____ is a device, or group of devices, by which the conductors of a circuit can be disconnected from their source of supply.

dissconnecting means

The type(s) of materials that can cause eye injuries include(s) ____

dust, metals, vapors

_____ enclosures are constructed so that dust will not enter under specific test conditions.

dusttight

Nonautomatic is defined as requiring _____ to perform a function.

human intervention

Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets for dwelling unit wall spaces, unless they are located within _____ in. of the wall.

18

Oxygen can become dangerous above the following level: _____ percent

23.50

An insulated grounded conductor _____ AWG or smaller shall be identified by a continuous white or gray outer finish, or by three continuous white or gray stripes along its entire length on other than green insulation.

6

The operation time of most fire extinguishers is _____

8 to 10 seconds

Responding to a chemical spill or hazardous waste clean-up requires training in _____.

Hazardous Waste Operations and Emergency Response (HAZWOPER)

Understanding how electricity works requires knowledge of _____.

Volts = Current x Resistance

Hazards that can cause electrical injuries include _____.

a cracked extension cord

For the flow of energy to occur, you need a combination of _____.

a generating source, conductor, and load; electricity, wiring, and equipment; a voltage source, electron flow, and a consuming device

The continuity of a grounded conductor shall not depend on a connection to _____.

a metallic enclosure, a raceway, or cable armor

If the employee who applied the lock and tag is absent, they can be removed by _____.

a qualified person

An accidental release of hazardous energy could cause _____

accidental start-ups, electric shock, the release of stored energy

If sufficient ventilation can't be obtained in a confined space, you should use a(n) _____

air line respirator

There are many different makes and styles of respirators, but all of them fall into two types which are _____

air-purifying respirators and atmosphere-supplying respirators

For an evacuation, you should know the _____

alarm system sounds, emergency exits, headcount location

Locking out equipment is completed when _____

all power sources that can be locked out are locked out

A confined space is dangerous when there are _____

atmospheric hazards, physical hazards, underground utilities

For the purposes of 210.71, examples of rooms that are not meeting rooms include _____.

auditoriums, schoolrooms, coffee shops

Special permission is the written consent from the _____.

authority having jurisdiction

If you're a trained attendant, you should _____

be knowledgeable in first aid and cardiopulmonary resuscitation; be in constant communication with the entrant; remain outside of the space

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s) are known as "_____ conductors."

branch circuit

The NEC defines a(an) "_____" as a structure that stands alone or that is separated from adjoining structures by fire walls.

building

An enclosure designed for either surface mounting or flush mounting provided with a frame in which a door(s) can be hung is called a(an) "_____."

cabinet

The class of hard hat that provides no voltage protection is _____

class C

To put out an electrical equipment fire, you should use a _____ type of fire extinguisher.

class C

A device that provides a means to connect intersystem bonding conductors for _____ systems to the grounding electrode system is an "intersystem bonding termination."

communications

The hazard(s) faced on a jobsite that could cause foot injuries include(s) _____

compression

The type of foot protection that should be used to prevent accumulation of static electricity is _____

conductive shoes and static dissipative shoes

A separate portion of a raceway system that provides access through a removable cover(s) to the interior of the system defines the term "_____."

conduit body

The Assured Equipment Grounding Conductor Program requires the following test(s) to be conducted before first use of new equipment: _____.

continuity test, grounding conductor test, visual inspection

Composite optical fiber cables contain optical fibers and _____.

current carrying electrical conductors

Flammable gases or vapors may be ignited by ___

cutting and welding; friction; hot surfaces

A _____ location is protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture.

damp

The installed conductive path(s) that provide(s) a ground fault current path and connects normally noncurrent carrying metal parts of equipment together and to the system grounded conductor or to the grounding electrode conductor, or both, is known as a(n) "_____ conductor."

equipment grounding

An overload is the same as a short circuit or ground fault.

false

Lighting track is a manufactured assembly and its length may not be altered by the addition or subtraction of sections of track.

false

The Code covers underground mine installations and self propelled mobile surface mining machinery and its attendant electrical trailing cable.

false

The NEC defines a "_____" as all circuit conductors between the service equipment, the source of a separately derived system, or other power supply source, and the final branch circuit overcurrent device.

feeder

Nonmandatory Informative Annexes contained in the back of the Code book are _____.

for information only and not enforceable as a requirement of the Code

The NEC is _____.

for the practical safeguarding of persons and property

Four basic components are needed for a fire to start and they are _____

fuel, an ignition source, oxygen, and a chain reaction

Equipment necessary when entering a confined space includes _____.

full body harness

The type of eye protection that should be used to guard against dust particles is _____.

goggles

A device intended for the protection of personnel that functions to de energize a circuit or portion thereof within an established period of time when the current to ground exceeds the values established for a Class A device, is a(n) "_____."

ground fault circuit interrupter

A system intended to provide protection of equipment from damaging line to ground fault currents by causing a disconnecting means to open all ungrounded conductors of the faulted circuit at current levels less than the supply circuit overcurrent device defines "_____."

ground fault protection of equipment

To prevent electrical accidents _____

guard live parts of 30-volt equipment

A physical hazard that can threaten safety is ____

heat, noise, underground utilities

The two major jobsite fire hazards are flammable and combustible liquids and _____.

heating devices

Arcing occurs when _____

high-amperage current jumps through air, circuits are opening or closing, static electricity is discharged