Holt, Electricians Exam Prep Unit 1

Where the required work space is doubled, ____ entrance(s) to the working space is/are required. a. 1 b. 2 c. 3 d. 4

1

At least one receptacle outlet shall be installed directly above a show window for each _____. a. 12 square feet b. 12 linear feet c. 10 linear feet d. 15 horizontal feet

12 linear feet

Kitchen and dining room countertop receptacle outlets in dwelling units must be installed above the countertop surface and not more than ____ above the countertop. a. 12 b. 18 c. 24 d. none of these

18 20 inches in 2011 code

Receptacle outlets shall, insofar as practicable, be spaced equal distances apart in a dwelling unit. Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets unless they are located within ____ of the wall. a. 6 inches b. 12 inches c. 18 inches d. close to the wall

18 inches

A one-family or two-family dwelling unit requires a minimum of ____ GFCI receptacles(s) located outdoors. a. 0 b. 1 c. 2 d. 3

2

Where connected to a branch circuit supplying ____ or more receptacles or outlets, a receptacle shall not supply a total cord-and plug connected load in excess of the maximum specified in Table 210-21(b)(2). a. 2 b. 3 c. 4 d. 5

2

One receptacle outlet shall be installed at each island or peninsular countertop with a long dimension of ____ inches or greater and a short dimension of ____ inches or greater.. a. 12, 24 b. 24, 12 c. 24, 48 d. 48, 24

24, 12

A load is considered to be continuous if it is expected to continue for _____ hours or more a. 1/2 b. 1 c. 2 d. 3

3

The minimum working clearance on a circuit 120 volts to ground, with exposed live parts on one side and no live or grounded parts on the other side of the working space is ____ feet a. 1 b. 3 c. 4 d. 6

3

The required clearance for access to live parts operating 300 volts, nominal to ground where there are exposed live parts on one side and grounded parts on the other side is ____ feet according to Table 110-26(a). a. 3 b. 3 1/2 c. 4 d. 4 1/2

3 1/2

Under the optional method for calculating a single-family dwelling, general loads beyond the initial 10 kW are to be assessed at a ____ percent demand factor. a. 40 b. 50 c. 60 d. 75

40

Multioutlet circuits rated 15 or 20 amperes can supply fixed appliances (utilization equipment fastened in place) as long as the fixed appliances do not exceed ____ percent of the circuit rating. a. 125 b. 100 c. 75 d. 50

50

Equipment such as raceways, cables, wireways, cabinets, panels, etc. can be located above or below other electrical equipment where the associated equipment does not extend more than _____ inches from the front of the electrical equipment. a. 3 b. 6 c. 12 d. 30

6

No point along the floor line in any wall space may be more than ____ feet from an outlet. a. 12 b. 10 c. 8 d. 6

6

On circuits over 600 volts, nominal, where energized live parts are exposed, the minimum clear work space shall not be less than ____ high for over 600 volts. a. 3 feet b. 5 feet c. 6 feet 3 inches d. 6 feet 6 inches

6 feet 6 inches

The neutral conductor of a 3-wire branch circuit supplying a household electric range shall be permitted to be smaller than the ungrounded conductors where the maximum demand of a 8 3/4 kW range has been computed according to Column A of Table 220-19. However, the neutral ampacity shall not be less than ____ percent of the branch circuit rating and not be smaller than No. _____. a. 50, 6 b. 70, 6 c. 50, 10 d. 70, 10

70, 10

Using standard load calculations, the feeder demand factor for five household clothes dryers is _____ percent a. 70 b. 85 c. 50 d. 100

85

Effective January 1, 2002, all branch circuits that supply 125 volt, 15 and 20 ampere receptacles in dwelling unit bedrooms shall be _____ protected. a. AFCI b. GFCI c. a and b d. none of these

AFCI

An overload may be caused by a short-circuit or ground -fault. a. True b. False

False

Explanatory material, such as references to other standards, references to related Sections of the Code, or information related to a Code rule is included in the Code book in the form of a Fine Print Note (FPN) a. True b. False

False

GFCI protection of personnel is required for fixed electric snow-melting or de-icing equipment receptacles that are not readily accessible and are not supplied by a dedicated branch circuit. a. True b. False

False

Service entrance or feeder conductors whose demand load is determined by the optional calculation as permitted in Section 220.88 shall not be permitted to have the neutral load determined by Section 220.61. a. True b. False

False

The dedicated space above a panelboard extends from the floor to the structural ceiling. A suspended ceiling is considered the structural ceiling. a. True b. False

False

The demand factors of Table 220-11 shall apply to the computed load of feeders to areas in hospitals, hotels, and motels where the entire lighting is likely to be used at one time, as in operating rooms, ballrooms, or dining rooms. a. True b. False

False

The demand factors of Table 220.56 apply to space heating, ventilating, and air-conditioning equipment. a. True b. False

False

Two 20-ampere small appliance circuits can supply more than one kitchen of a dwelling. a. True b. False

False

Where a cable containing an insulated conductor with a white or natural gray outer finish is used for a 3 way or 4 way switch loop, the white or natural gray conductor can be used for the supply to the switch. Re-identification of the white or natural gray conductor is not required. a. True b. False

False

Connection by means of wire binding screws or studs and nuts having upturned lugs or the equivalent shall be permitted for ____ or smaller conductors. a. No. 10 b. No. 8 c. No. 6 d. none of these

No. 10

What size THHN conductor is required for a 50-ampere circuit if the equipment terminals are listed for 75 degrees C conductor sizing? Tip 310-16 lists conductor ampacities. a. No. 10 b. No. 8 c. No. 6 d. any of these

No. 8

____ shall be provided to give safe access to the working space around equipment over 600 volts installed on platforms, balconies, mezzanine floors, or in attic or roof rooms or spaces. a. Ladders b. Platforms or ladders c. Permanent ladders or stairways d. Openings

Permanent ladders or stairways

A lighting outlet shall be installed at the exterior side of each outdoor entrance or exit that has grade level access. a. True b. False

True

Conductors installed between buildings, structures, or poles as well as wiring and equipment located on or attached to the outside of buildings, structures, or poles must comply with Article 225. a. True b. False

True

If a portion of the dwelling-unit basement is finished, then a GFCI protected 125 volt 15 or 20 ampere receptacle must be installed in the unfinished area of the basement. a. True b. False

True

Premises wiring shall not be electrically connected to a supply system unless the supply system contains, for any grounded conductor of the interior system, a corresponding conductor that is grounded. a. True b. False

True

The Code does not cover installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles. a. True b. False

True

The minimum headroom of working spaces about service equipment, switchboards, panelboards, or motor control centers shall be 6 1/2 feet, except service equipment or panelboards in existing dwelling units that do not exceed 200 amperes. a. True b. False

True

Where more than one nominal voltage system exists in a building, each ungrounded system conductor shall be identified by phase and system. The means of identification shall be permanently posted at each branch-circuit. a. True b. False

True

For other than dwelling units, a wall-switched lighting outlet is required near equipment requiring servicing in attics or underfloor spaces, and the switch must be located at the point of entrance to the attic or underfloor space. a. True b. False

True In 2011 This is now true for all Spaces

Receptacle outlets shall not be installed in a face-up position in the work surfaces or counter-tops of a wet bar sink. a. True c. False

True new code would be false

When determining the load for recessed lighting fixtures for branch circuits, the load shall be based on the _____. a. wattage rating of the fixture b. VA of the equipment and lamps c. wattage rating of the lamps d. none of these

VA of the equipment and lamps

All wiring shall be installed so that the completed system shall be free from _____. a. short circuits b. grounds c. a and b d. none of these

a and b

In dwelling units, the voltage between conductors shall not exceed 120 volts, nominal, between conductors that supply the terminals of _____. a. lighting fixtures b. cord and plug-connected loads of less than 1440 VA, nominal c. cord and plug-connected loads of more than 1440 VA, nominal d. a and b

a and b

Receptacle loads for non-dwelling units computed at not more than 180 VA per outlet in accordance with Section 220.14(H) and (I) shall be permitted to be _____. a. added to the lighting loads and made subject to demand factors of Table 220.44 b. made subject to the demand factors of Table 220.42 c. made subject to the lighting demand loads of Table 220.3(B))Recepticle Outlets d. a or b

a or b

When replacing and ungrounded receptacle in a bedroom of a dwelling unit, if a grounding means does not exist in the receptacle enclosure you must use a _____. a. non-grounding receptacle b. grounding receptacle c. GFCI type receptacle d a or b

a or b

Utilization equipment is equipment that utilizes electricity for ____. a. chemicals b. heating c. lighting d. a through c

a through c

Capable of being removed or exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of the building defines ____. a. accessible(equipment) b. accessible (wiring methods) c. accessible, readily d. a, b, and c

accessible (wiring methods)

The authority having jurisdiction of enforcement of the Code has the responsibility ____. a. for making interpretations of the rules of the Code b. for deciding upon the approval of equipment and materials c. for waving specific requirements in the Code and allowing alternate methods and material if safety is maintained d. all of the above.

all of the above

When the term exposed is used in the Code it refers to _____. a. capable of being inadvertently touched or approached nearer than a safe distance by a person b. parts that are not suitably guarded, isolated or insulated c. wiring on, or attached to, the surface or behind panels being designed to allow access d. all of the above

all of the above

Ground-fault protection is required for the feeder disconnect if _____. a. the feeder is rated 1000 amps or more. b. it is a solidly grounded wye system c. the system voltage is over 150 volts to ground, but not exceeding 600 volts phase to phase d. all of these

all of these

The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity. This Code contains provisions considered necessary for safety regardless of _____. a. efficient use b. convenience c. good service or future expansion d. all of these

all of these

Unless identified for use in the operating environment, no conductors or equipment shall be ____ having a deteriorating effect on the conductors or equipment. a. located in damp or wet locations b. exposed to fumes, vapors, and gases c. exposed to liquids and excessive temperatures d. all of these

all of these

The Code applies to the installation of _____. a. electrical conductors and equipment within or on public and private buildings b. outside conductors and equipment on the premises c. optical fiber cable d. all these

all 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. a. voltages b. temperatures c. listings d. ampacities

ampacities

It shall be permitted to base the ____ rating of a range receptacle on a single range demand load specified in Table 220-19. a. circuit b. voltage c. ampere d. load

ampere

Compliance with provisions of the Code will result in _____. a. good electrical service b. an efficient electrical system c. an electrical system free from hazard d. all of these

an electrical system free from hazard

The case or housing of apparatus or the fence surrounding an installation to prevent accidental contact of persons to energized parts is called _____. a. guarded b. covered c. protection d. an enclosure

an enclosure

Illumination on the exterior side of outdoor entrances or exits shall have grade level access can be controlled by _____. a. home automation devices b. motion sensors c. photocells d. any of the above

any of the above

Electrical installations over 600 volts located in ____, where access is controlled by lock and key or other approved means, shall be considered to be accessible to qualified persons only. a. a room or closet b. a vault c. an area surrounded by a wall, screen, or fence d. any of these

any of these

Installations of communications equipment under the exclusive control of communications utilities located outdoors or in building spaces used exclusively for such installations _____ covered by the Code. a. are b. are sometimes c. are not d. might be

are not

A synthetic nonflammable insulating medium which, when decomposed by electric arcs, produces predominantly nonflammable gaseous mixtures is known as _____. a. oil b. Geritol c. askarel d. phenol

askarel

When live parts of electrical equipment are guarded by suitable permanent, substantial partitions or screens, any openings in such partitions or screens shall be so sized and located that persons are not likely to come into accidental contact with live parts or to bring _____ into contact with them. a. dust b. conducting objects c. wires d. contaminating

conducting objects

A conductor encased within material of composition or thickness that is not recognized by the code is called a _____ conductor. a. non-insulating b. bare c. covered d. protected

covered

Electrical equipment shall have sufficient short-circuit ___ rating to permit the circuit protection device to clear a fault without extensive damage to the electrical components of the circuit a. withstand b. current c. overload d. all of these

current

The environment of a wiring method under the eve of a house with a roof open porch would be considered a _____ location. a. dry b. damp c. wet d. moist

damp

So constructed or protected that dust will not interfere with its successful operation is called _____. a. dusttight b. dustproof c. dust rated d. all of these

dustproof

Where installed in a metal raceway, all feeder conductors using a common neutral shall be ____. a. insulated for 600 volts b. enclosed within the same raceway c. shielded d. none of these

enclosed within the same raceway

The National Electrical Code is _____. a. intended to be a design manual b. meant to be used as an instruction guide for untrained persons c. for the practical safeguarding of persons and property d. published by the Bureau of Standards

for the practical safeguarding of persons and property

Ground-fault circuit-interrupter (GFCI) protection for personnel is required for all 125 volt, single-phase, 15 and 20 ampere receptacles installed in a dwelling-unit_____. a. attic b. garage c. laundry d. all of these

garage

A form of general-use switch so constructed that it can be installed in flush device boxes or on outlet box covers, or otherwise used in conjunction with wiring systems recognized by the Code is a ____ switch. a. transfer b. motor-circuit c. general-use snap d. bypass isolation

general-use snap

Chapters 1 through 4 of the NEC apply _____. a. generally to all electrical installations b. to special installations and conditions c. to special equipment and material d. all of these

generally to all electrical installations

A device intended for the protection of personnel that functions to de-energize a circuit within an established period of time when a current to ground exceeds some predetermined value less than that required to operate the overcurrent protection device of the supply circuit is a(n) _____. a. dual-element fuse b. inverse-time breaker c. ground-fault circuit-interrupter d. safety switch

ground-fault circuit-interrupter

Connected to earth or to some conducting body that serves in place of earth is called _____. a. grounding b. bonded c. grounded d. all the above

grounded

No ____ shall be attached to any terminal or lead so as to reverse designated polarity. a. grounded conductor b. grounding conductor c. ungrounded conductor d. grounding connector

grounded conductor

Switches or other equipment operating at 600 volts, nominal or less and serving only equipment within a high-voltage vault, room, or enclosure shall be permitted to be installed in the ____ enclosure, room, or vault if accessible to qualified persons only. a. restricted b. medium-voltage c. sealed d. high-voltage

high-voltage

Recognized as suitable for the specific purpose, function, use, environment, and application is the definitions of _____. a. labeled b. identified c. listed d. approved

identified

The NEC requires that electrical work be installed ____. a. in a neat and workmanlike manner b. under the supervision of a qualified person c. completed before being inspected d. all of these

in a neat and workmanlike manner

A branch circuit that supplies only one utilization equipment is a(n) _____branch circuit a. individual b. general-purpose c. isolated d. special purpose

individual

Equipment listed by a qualified electrical testing laboratory is not required to have the ____ wiring to be reinspected at the time of installation. a. external b. associated c. internal d. any of these

internal

Equipment or materials to which a symbol or other identifying mark acceptable to the authority having jurisdiction has been attached is known as _____. a. listed b. labeled c. approved d. rated

labeled

The lighting outlets provided for illumination about electrical equipment over 600 volts shall be so arranged that persons changing lamps or making repairs on the ____ will not be endangered by live parts or other equipment. a. lighting system b. electrical system c. electrical equipment d. panelboard

lighting system

Equipment is required to be installed and used according to its ____ instructions. a. listed or published b. labeled or design c. listed and labeled d. any of the above

listed and labeled

The connection between the grounded (neutral) conductor and the equipment grounding conductor at the service is accomplished with the use of a _____jumper. a. main bonding b. bonding c. equipment bonding d. circuit bonding

main bonding

Distinctive marking at the terminals during the process of installation shall identify the grounded conductors of _____ metal-sheathed cable. a. armored b. mineral insulated c. copper d. aluminum

mineral insulated

The connected load to which the demand factors of table 220.84 apply shall include the _____ rating of all appliances that are fastened in place, permanently connected or located to be on a specific circuit: ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, water heaters, and space heaters. a. calculated b. nameplate c. circuit d. overcurrent protection

nameplate

Electrical equipment that depends on the _____ principles for cooling of exposed surfaces shall be installed so that airflow over such surfaces is not prevented by walls or adjacent installed equipment. a. Peter b. natural circulation of air and convection c. artificial cooling and circulation d. air-conditioning

natural circulation of air and convection

A circuit in which any arc or thermal effect produced, under intended operating conditions of the equipment or due to opening, shorting, or grounding of field wiring, is not capable, under specified test conditions, of igniting the flammable gas, vapor, or dust-air mixture is a _____ circuit. a. non-conductive b. branch c. nonincendive d. closed

nonincendive

There shall be no reduction in the size of the neutral conductor on ____ -type lighting loads. a. dwelling unit b. hospital c. nonlinear d. motel

nonlinear

The 3 volt-ampere per square foot for dwelling unit general lighting includes all 15 and 20 ampere general use receptacles. The floor area shall _____ open porches, garages, or unused or unfinished spaces, not adaptable for future use. a. include b. not include.

not include

A circuit breaker is a device designed to _____ a circuit by non-automatic means and to open a circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating a. blow b. disconnect c. connect d. open and close

open and close

Varying duty is defined as _____. a. intermittent operation in which the load conditions are regularly recurrent b. operation at a substantially constant load for an indefinite length of time c. operation for alternate intervals of load and rest; or load, no load, and rest d. operation at loads and for intervals of time, both of which may be subject to wide variations

operation at loads and for intervals of time, both of which may be subject to wide variations

Where the load is computed on a volt-amperes-per-square-foot basis, the load shall be evenly proportioned among multioutlet branch circuits within the _____. a. premises b. branch circuits c. panelboard(s) d. dwelling unit

panelboard(s)

Something constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions is defined as _____. a. raintight b. waterproof c. weathertight d. rainproof

rainproof

A ____ system is where a premise wiring is derived from a transformer and that has no direct electrical connection, including a solidly connected grounded circuit conductor, to supply conductors originating in another system. a. separately derived b. classified c. direct d. emergency

separately derived

Overhead service conductors from the last pole or other aerial support to and including the splices if any are called _____ conductors. a. service-entrance b. service lateral c. service drop d. main service conductors

service drop

Service conductors between the street main and the first point of connection to the service entrance run underground are know as the _____. a. utility service b. service lateral c. service drop d. main service conductors

service lateral

A single receptacle is a ____ contact device with no other contact device on the same yoke. a. dual b. single c. multiple d. live

single

The total components and subsystems that, in combination, convert solar energy into electrical energy is called a _____system a. solar b. solar voltaic c. separately derived source d. solar photovoltaic

solar photovoltaic

Which of the following does the Code recognize as a device? a. switch b. switch and light bulb c. lock nut and switch d. lock nut and bushing

switch

Something constructed so that moisture will not enter the enclosure under specific test conditions is called _____. a.. watertight b. moisture proof c. waterproof d. rainproof

watertight

Sufficient access and _____ shall be provided and maintained about all electrical equipment to permit ready and safe operation and maintenance of such equipment a. ventilation b. cleanliness c. circulation d. working space

working space