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
