Article Quiz

For large equipment that contains service disconnecting means installed in accordance with 230.71 where the combined ampere rating is _____ or more and over 6 ft wide, there shall be one entrance to and egress from the required working space not less than 24 in. wide and 6 1/2 ft high at each end of the working space 1. 800A 2. 1,000A 3. 1,200A 4. 2,000A

1,200A

All switchboards, switchgear, panelboards, and motor control centers shall be located in dedicated spaces and protected from damage and the working clearance space for outdoor installations shall include the zone described in _____. 1. 110.26(A) 2. 110.26(B) 3. 90.1 4. 250.112(A)

110.26(A)

The required working space for access to live parts of equipment operating at 300 volts-to-ground, where there are exposed live parts on one side and grounded parts on the other side, is _____ ft. 1. 3 2. 3 1/2 3. 4 4. 4 1/2

3 1/2

The minimum working space on a circuit for equipment operating at 750 volts-to-ground, with exposed live parts on one side and grounded parts on the other side of the working space is ______. 1. 1 ft 2. 3 ft 3. 4 ft 4. 6 ft

4 ft

Installations shall comply with the material located in the NEC Annexes because they are part of the requirements of the Code. 1. True 2. False

False

The Code covers underground mine installations and self-propelled mobile surface mining machinery and its attendant electrical trailing cable. 1. True 2. False

False

_____ at other than dwelling units shall be legibly field marked with the available fault current, include the date the fault-current calculation was performed, and be of sufficient durability to withstand the environment involved. 1. Service equipment 2. Sub panels 3. Motor control centers 4. all of these

Service equipment

Chapters 5, 6, and 7 apply to special occupancies, special equipment, or other special conditions and may supplement or modify the requirements in Chapters 1 through 7. 1. True 2. False

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. 1. True 2. False

True

Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock. 1. True 2. False

True

Explanatory material, such as references to other standards, references to related sections of the NEC, or information related to a Code rule, are included in the form of Informational Notes. 1. True 2. False

True

Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling. 1. True 2. False

True

The NEC does not cover electrical installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles. 1. True 2. False

True

The NEC requires tested series-rated installations of circuit breakers or fuses to be legibly marked in the field to indicate the equipment has been applied with a series combination rating. 1. True 2. False

True

The minimum height of working spaces about electrical equipment, switchboards, panelboards, or motor control centers operating at 1,000V, nominal, or less and likely to require examination, adjustment, servicing, or maintenance while energized shall be 6 1/2 ft or the height of the equipment, whichever is greater, except for service equipment or panelboards in existing dwelling units that do not exceed 200A. 1. True 2. False

True

The NEC applies to the installation of ______. 1. electrical conductors and equipment within or on public and private buildings 2. outside conductors and equipment on the premises 3. optical fiber cables and raceways 4. all of these

all of these

The NEC does apply to installations in _____. 1. floating buildings 2. mobile homes 3. recreational vehicles 4. all of these

all of these

The authority having jurisdiction has the responsibility for _____. 1. making interpretations of rules 2. deciding upon the approval of equipment and materials 3. waiving specific requirements in the Code and permitting alternate methods and material if safety is maintained 4. all of these

all of these

This Code covers the installation of _____ for public and private premises, including buildings, structures, mobile homes, recreational vehicles, and floating buildings. 1. optical fiber cables 2. electrical equipment 3. raceways 4. all of these

all of these

The _____ has the responsibility for deciding on the approval of equipment and materials. 1. manufacturer 2. authority having jurisdiction 3. testing agency 4. the owner of the premises

authority having jurisdiction

Installations used to export electric power from vehicles to premises wiring or for _____ current flow are covered by the NEC. 1. emergency 2. primary 3. bidirectional 4. secondary

bidirectional

By definition, an attachment fitting is different from an attachment plug because no _____ is associated with the fitting. 1. cable 2. fixture wire 3. cord 4. wiring compartment

cord

Composite optical fiber cables contain optical fibers and _____. 1. strength members 2. vapor barriers 3. current-carrying electrical conductors 4. none of these

current-carrying electrical conductors

The _____ of any system is the ratio of the maximum demand of a system, or part of a system, to the total connected load of a system. 1. load 2. demand factor 3. minimum load 4. calculated factor

demand factor

Systems of illumination utilizing fluorescent lamps, high-intensity discharge (HID) lamps, or neon tubing are all types of _____ lighting. 1. area 2. flood 3. security 4. electric-discharge

electric-discharge

Surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally contacting energized parts is called \"_____.\" 1. guarded 2. covered 3. protection 4. enclosed

enclosed

The installed conductive path(s) that is part of 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(an) "_____ conductor." 1. grounding electrode 2. grounding 3. equipment grounding 4. neutral

equipment grounding

Nonmandatory Informative Annexes contained in the back of the Code book are _____. 1. for information only 2. not enforceable as a requirement of the Code 3. enforceable as a requirement of the Code 4. for information only and not enforceable as a requirement of the Code

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

The NEC is _______. 1. intended to be a design manual 2. meant to be used as an instruction guide for untrained persons 3. for the practical safeguarding of persons and property 4. published by the Bureau of Standards

for the practical safeguarding of persons and property

Chapters 1 through 4 of the NEC apply _____. 1. generally to all electrical installations 2. only to special occupancies and conditions 3. only to special equipment and material 4. all of these

generally to all electrical installations

Connected (connecting) to ground or to a conductive body that extends the ground connection is called \"_____.\" 1. equipment grounding 2. bonded 3. grounded 4. all of these

grounded

A conducting object through which a direct connection to earth is established is a \"_____.\" 1. bonding conductor 2. grounding conductor 3. grounding electrode 4. grounded conductor

grounding electrode

Part III of Article 100 contains definitions which are applicable to _____. 1. solar PV systems 2. hazardous (classified) locations 3. electrical systems over 1,000V 4. healthcare facilities

hazardous (classified) locations

\"Nonautomatic\" is defined as requiring _____ to perform a function. 1. protection from damage 2. human intervention 3. mechanical linkage 4. all of these

human intervention

A branch circuit that supplies only one utilization equipment is a(an) _____ branch circuit. 1. individual 2. general-purpose 3. isolated 4. special-purpose

individual

It is the intent of the NEC that factory-installed _____ wiring of listed equipment need not be inspected at the time of installation of the equipment, except to detect alterations or damage. 1. external 2. associated 3. internal 4. all of these

internal

A wire that is run along with integral to a cable or conductor to provide mechanical support for the cable or conductor is a _____. 1. tension wire 2. messenger wire 3. guy wire 4. strain relief wire

messenger wire

Hazards often occur because of _____. 1. overloading of wiring systems by methods or usage not in conformity with the NEC 2. initial wiring not providing for increases in the use of electricity 3. overloading of wiring systems by methods or usage not in conformity with the NEC and initial wiring not providing for increases in the use of electricity

overloading of wiring systems by methods or usage not in conformity with the NEC and initial wiring not providing for increases in the use of electricity

NFPA 70E, Standard for Electrical Safety in the Workplace, provides guidance, such as determining severity of potential exposure, planning safe work practices, arc-flash labeling, and selecting _____. 1. personal protective equipment 2. coordinated overcurrent protective devices 3. a and b 4. none of these

personal protective equipment

The Code does not cover installations under the exclusive control of an electrical utility such as _____. 1. service drops and laterals 2. electric utility office buildings 3. electric utility warehouses 4. electric utility garages

service drops and laterals

The ______ is the necessary equipment, usually consisting of a circuit breaker(s) or switch(es) and fuse(s) and their accessories, connected to the load end of service conductors, and intended to constitute the main control and cutoff of the supply. 1. service equipment 2. service 3. service disconnect 4. service overcurrent device

service equipment

When the Code uses "_____," it means the identified actions are allowed but not required, and they may be options or alternative methods. 1. shall 2. shall not 3. shall be permitted 4. shall or shall not

shall be permitted

In the NEC, the word(s) \"_____\" indicate a mandatory requirement. 1. shall 2. shall not 3. shall be permitted 4. shall or shall not

shall or shall not

Installations supplying _____ power to ships and watercraft in marinas and boatyards are covered by the NEC. 1. shore 2. primary 3. secondary 4. auxiliary

shore

Working space shall not be used for _____. 1. storage 2. raceways 3. lighting 4. accessibility

storage

An effective ground-fault current path is an intentionally constructed, low-impedance electrically conductive path designed and intended to carry current during a ground-fault condition from the point of a ground fault on a wiring system to _____. 1. ground 2. earth 3. the electrical supply source 4. the grounding electrode

the electrical supply source

Each disconnecting means shall be legibly marked to indicate its purpose unless located and arranged so _____. 1. that it can be locked out and tagged 2. it is not readily accessible 3. the purpose is evident 4. that it operates at less than 300 volts-to-ground

the purpose is evident

"Generating capacity, inverter" is defined as the sum of parallel-connected inverter maximum continuous output power at 40⁰C in _____. 1. amperes or kVA 2. volts or kV 3. watts or kW 4. a 24-hour period

watts or kW

Electrical hazards often occur because the initial _____ did not provide for increases in the use of electricity and therefore wiring systems become overloaded. 1. inspection 2. owner 3. wiring 4. builder

wiring

Electrical equipment rooms or enclosures housing electrical apparatus that are controlled by a lock(s) shall be considered _____ to qualified persons. 1. readily accessible 2. accessible 3. available 4. secured

accessible

Chapters 5, 6, and 7 of the NEC apply to _____. 1. special occupancies 2. special equipment 3. special conditions 4. all of these

all of these

The Code contains provisions considered necessary for safety, which will not necessarily result in _____. 1. efficient use 2. convenience 3. good service or future expansion of electrical use 4. all of these

all of these

Separately installed pressure connectors shall be used with conductors at the _____ not exceeding the ampacity at the listed and identified temperature rating of the connector. 1. voltages 2. temperatures 3. listings 4. ampacities

ampacities

Installations of communications equipment that are under the exclusive control of communications utilities, and located outdoors or in building spaces used exclusively for such installations ______ covered by the NEC. 1. are 2. are sometimes 3. are not 4. may be

are not

Factory-installed _____ wiring of listed equipment need not be inspected at the time of installation of the equipment, except to detect alterations or damage. 1. external 2. associated 3. internal 4. all of these

internal

A battery system includes storage batteries and battery chargers, and can include inverters, converters, and associated electrical equipment. 1. True 2. False

True

A multiwire branch circuit consists of _____. 1. two or more ungrounded conductors that have a voltage between them 2. a grounded conductor that has equal voltage between it and each ungrounded conductor of the circuit 3. a grounded conductor connected to the neutral or grounded conductor of the system 4. all of these

all of these

All _____ shall be covered with an insulation equivalent to that of the conductors or with an identified insulating device. 1. splices 2. joints 3. free ends of conductors 4. all of these

all of these

Compliance with the Code and proper maintenance result in an installation that is _____. 1. essentially free from hazards 2. not necessarily efficient or convenient 3. not necessarily adequate for good service or future expansion 4. all of these

all of these

Examples of ground-fault current paths include any combination of conductive materials including _____. 1. equipment grounding conductors 2. metallic raceways 3. metal water and gas piping 4. all of these

all of these

In judging equipment for approval, considerations such as _____ shall be evaluated. 1. mechanical strength 2. wire-bending space 3. arcing effects 4. all of these

all of these

Which of the following systems shall be installed and removed in accordance with the NEC requirements? 1. Signaling conductors, equipment, and raceways. 2. Communications conductors, equipment, and raceways. 3. Electrical conductors, equipment, and raceways. 4. all of these

all of these

Compliance with the provisions of the NEC will result in _____. 1. good electrical service 2. an efficient electrical system 3. an electrical system essentially free from hazard 4. all of these

an electrical system essentially free from hazard

As applied to electrical equipment, the term "reconditioned" may be interchangeable with the term(s) "_____." 1. rebuilt 2. refurbished 3. remanufactured 4. any of these

any of these

Equipment or materials to which has been attached a(n) _____ of an FEB indicating the equipment or materials were evaluated and found to comply with requirements as described in an accompanying field evaluation report is known as "field labeled (as applied to evaluated products)." 1. symbol 2. label 3. other identifying mark 4. any of these

any of these

If the NEC requires new products that are not yet available at the time a new edition is adopted, the ______ may permit the use of the products that comply with the most recent previous edition of the Code adopted by that jurisdiction. 1. electrical engineer 2. master electrician 3. authority having jurisdiction 4. permit holder

authority having jurisdiction