Article 90 and 100
The Code contains provisions considered necessary for safety, which will not necessarily result in _____.
Efficient use, convenience, and good service or future expansion of electrical use
Compliance with the Code and proper maintenance result in an installation that is_____.
Essentially free from hazards, not necessarily efficient or convenient, and not necessarily adequate for good service of future expansion.
Installations shall comply with the material located in the NEC Annexes because they are part of the requirements of the Code.
False
The Code covers underground mine installations and self-propelled mobile surface mining machinery and its attendant trailing cable.
False
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.
True
Communications wiring such as telephone, antenna, and CATV wiring within a building shall not be required to comply with the installation requirements of Chapter 1 through 7, except where specifically referenced in Chapter 8.
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.
True
The NEC does not cover electrical installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles
True
Which of the following systems shall be installed and removed in accordance with the NEC requirements?
a) Signaling conductors, equipment, and raceways b)Communications conductors, equipment, and raceways c)Electrical conductors, equipment, and raceways
The NEC does apply to installations in _____.
a) floating buildings b) mobile homes c) recreational vehicles
The authority having jurisdiction has the responsibility for_____.
a) making interpretations of rules b) deciding upon the approval of equipment and materials c) waiving specific requirements in the Code and permitting alternate methods and material if safety in maintained
This code covers the installation of ________ for public and privates premises, including buildings, structures, mobile homes, recreational vehicles, and floating buildings.
a) optical fibers cables b)electrical equipment c) raceways
Hazards often occur because of _____.
a) overloading of wiring systems by methods of usage not in conformity with the NEC b) initial wiring not providing for increases in the use of electricity
Chapters 5,6, and 7 of the NEC relate to _____.
a) special occupancies b) conditions c) special equipment
The NEC applies to the installation of _____.
a)Electrical conductors and equipment within or on public and private buildings b) signaling and communication conductors c) optical fiber cables
admitting close approach; not guarded by locked doors, elevation, or other effective means
accessible (as applied to equipment)
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
accessible (as applied to wiring methods)
capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to actions such as to use tools, to climb over or remove obstacles, or to resort to portable ladders, and so forth
accessible, readily (readily accessible)
a qualifying term indicating that the circuit breaker can be set to trip at various values of current, time, or both, within a predetermined range
adjustable (as applied to circuit breakers)
power conversion equipment that provides a means of adjusting the speed of an electric motor
adjustable speed drive
a combination of an adjustable speed drive, its associated motor(s), and auxiliary equipment
adjustable speed drive system
the maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating
ampacity
Compliance with provisions of the NEC will result in _____.
an electrical system essentially free from hazard
utilization equipment, generally other than industrial, that is normally built in standardized sizes or types and is installed or connected as a unit to preform one or more functions such as clothes washing, air-conditioning, food mixing, deep frying, and so forth
appliance
acceptable to the authority having jurisdiction
approved
a device intended to provide protection from the effects of arc faults by recognizing characteristics unique to to arching and by functioning to de-energize the circuit when an arc fault is detected
arc-fault circuit interrupter (AFCI)
a generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media
askarel
a device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle
attachment plug (plug cap) (plug)
If the NEC requires new products that are not yet available at the time a new edition is adopted, the _____ may permit the us of the products that comply with the most recent previous edition of the Code adopted by that jurisdiction.
authority having jurisdiction
The_____ has the responsibility for deciding on the approval of equipment and materials.
authority having jurisdiction
an organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or a procedure
authority having jurisdiction (AHJ)
performing a function without the necessity of human intervention
automatic
an area including a basin with one or more of the following: a toilet , a urinal , a tub, a shower, a bidet , or similar plumbing fixtures
bathroom
interconnected battery subsystems consisting of one or more storage batteries and battery chargers, and can include inverters, converters, and associated electrical equipment
battery system
Installations used to export electric power from vehicles to premises wiring or for _____ current flow are covered by the NEC
bidirectional
connected to established electrical continuity and conductivity
bonded (bonding)
a reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected
bonding conductor or jumper
the connection between two or more portions of the equipment grounding conductor
bonding jumper equipment
the connection between the grounded circuit conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately derived system
bonding jumper main
the circuit conductors between the final overcurrent device protecting the circuit and the outlet(s)
branch circuit
a branch circuit that supplies energy to one or more outlets to which appliances are to be connected and that has no permanently connected luminaries that are not a part of an appliance
branch circuit appliance
a branch circuit the supplies two or more receptacles or outlets for lighting and appliances
branch circuit general purpose
a branch circuit that supplies only one utilization equipment
branch circuit individual
a branch circuit that consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has equal voltage between it and each ungrounded conductor of the circuit and that is connected to the neutral or grounded conductor of the system
branch circuit multiwire
a structure that stands alone or that is cut off from adjoining structures by fire walls with a ll openings therein protected by approved fire doors
building
an enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung
cabinet
a single channel or connected multiple channels, as well as associated fittings, forming a structural system that is used to support and route communications wires and cables, optical fiber cables, data cables associated with information technology and communications equipment , Class 2 and Class 3 cables, and power-limited fire alarm cables
cable routing assembly
equipment that controls dc voltage or dc current, or both, and that is used to charge a battery or other energy storage device
charge controller
a device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating
circuit breaker
a noninhabitable room or space intended primarily for storage of garments and apparel
clothes closet
the electronic equipment that preforms the telecommunications operations for the transmission of audio, video, and data, and includes power equipment (e.g., dc converters, inverters, and batteries), technical support equipment (e.g., computers), and conductors dedicated solely to the operation of the equipment
communications equipment
an enclosed channel of nonmetallic materials designed expressly for holding communications wires and cables, typically communications wires and cables and optical fiber and data (Class 2 and Class 3) in plenum, riser, and general-purpose applications
communications raceway
rendered inaccessible by the structure or finish of the building
concealed
a conductor having no covering or electrical insulation whatsoever
conductor, bare
a conductor encased within material of composition or thickness that is not recognized by this code as electrical insulation
conductor, covered
a conductor encased within material of composition and thickness that is recognized by this code as electrical insulation
conductor, insulated
a separate portion of a conduit or tubing system that provides access through a removable cover(s) to the interior of the system at a junction of two or more sections of the system or at a terminal point of the system boxes such as FS and FD or larger cast or sheet metal boxes are not classified as conduit bodies
conduit body
a device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder
connector, pressure (solderless)
a load where the maximum current is expected to continue for 3 hours or more
continuous load
the circuit of a control apparatus or system that carries the electric signals directing the performance of the controller but does not carry the main power current
control circuit
a device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected
controller
a cooking appliance designed for mounting in or on a counter and consisting of one or more heating elements, internal wiring, and built-in or mountable controls
cooking unit, counter-mounted
localization of an overcorrect condition to restrict outages to the circuit or equipment affected, accomplished by the selection and installation of over current protective devices and their ratings or settings for the full range of available overcurrents, from overload to the the maximum available fault current, and for the full range of overcurrent protective device opening times associated with those overcurrents
coordination (selective)
conductors drawn from a copper-clad aluminum rod, with the copper metal-lurigically bonded to an aluminum core, where the copper forms a minimum of 10 percent of the cross-sectional area of a solid conductor or each strand of a stranded conductor
copper-clad aluminum conductors
an enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescoping with the walls of the box proper
cutout box
without live parts exposed to a person on the operating side of the equipment
dead front
the ratio of the maximum demand of a system or part of a system, to the total connected load of a system or the part of the system under consideration
demand factor
a unit of an electrical system, other than a conductor, that carries or controls electric energy as its principal function
device
a device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply
disconnecting means
constructed so that dust will not enter the. enclosing case under specified test conditions
dusttight
operation at a substantially constant load for an indefinitely long time
duty, continuous
operation for alternate intervals of (1) load and no load; or (2) load and rest; or (3) load, no load, and rest
duty, intermittent
intermittent operation in which the load conditions are regularly recurrent
duty, periodic
operation at a substantially constant load for a short and definite, specified time
duty, short-time
operation at loads, and for intervals of time, both of which may be subject to wide variation
duty, varying
a single unit, providing complete and independent living facilities for one or more persons including permanent provisions for living , sleeping, cooking, and sanitation
dwelling unit
a building that contains three or more dwelling units
dwelling, multifamily
a building that consists solely of one dwelling unit
dwelling, one-family
a building that consists solely of two dwelling units
dwelling, two-family
an intentionally constructed, low-impedance electrically conductive path designed and intended to carry current under ground-fault conditions form the point of a ground fault on a wiring system to the electrical supply source and that facilitates the operation of the overcurrent protective device or ground-fault detectors
effective ground- fault current path
power production, distribution, and utilization equipment and facilities, such as electric utility systems that deliver electric power to the connected loads, that are external to and not controlled by an interactive system
electric power production and distribution network
a fixed, stationary, or portable self-contained, electrically illuminated utilization equipment with words or symbols designed to convey information or attract attention
electric sign
systems of illumination utilizing florescent lamps, high-intensity discharge (HID) lamps, or neon tubing
electric-discharge lighting
an overcurrent protective device that generally consists of a control module that provides current-sensing, electronically derived time-current characteristics, energy to initiate tripping, and an interrupting module that interrupts current when an overcurrent occurs such fuses may or may not operate in a current-limiting fashion, depending on the type of control selected
electronically actuated fuse
surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally contacting energized parts
enclosed
the case or housing of apparatus, or the fence or walls surrounding an installation to prevent personnel form accidentally contacting energized parts or to protect the equipment from physical damage
enclosure
electrically connected to , or is, a source of voltage
energized
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.
Chapters 1 through 4 of the NEC apply________.
generally to all electrical installations
a qualifying term indicating that no delay is purposely introduced in the tripping action of the circuit breaker
instantaneous trip (as applied to circuit breakers)
Factory-installed ______ wiring of listed equipment need not be inspected at the time of installation of the equipment, except to detect alterations or damage.
internal
It is the intent of the NEC that factory-installed _____ wiring of listed equipment need not be inspected time of installation of the equipment, except to detect alteration or damage.
internal
a qualifying term indicating that there is purposely introduced a delay in the tripping action of the circuit breaker, which delay decreases as the magnitude of the current increases
inverse time (as applied to circuit breakers)
a qualifying term indicating that the circuit breaker does not have any adjustment to alter the value of the current at which it will trip or the time required for its operation
nonadjustable (as applied to circuit breakers)
the value of current time, or both, at which an adjustable circuit breaker is set to trip
setting (of circuit breakers)
When the Code uses "________"it means the identified actions are allowed but not required, and they may be options or alternative methods.
shall be permitted
In the NEC, the word(s)"_____" indicate a mandatory requirement.
shall or shall not
Installations supplying _____ power to ships and watercraft in marinas and boatyards are covered by the NEC
shore
Electrical hazards often occur because the initial _____ did not provide for increases in the use of electricity and therefore wiring systems become overloaded,
wiring