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NEC 2008 Definitons > NEC 2008 Definitions > Flashcards

NEC 2008 Definitions Flashcards

Learning NEC

1
Q

Accesible ( as applied to equipment )

A

Admitting close approach; not guarded by locked doors, elevation, or other effective means.

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2
Q

Accessible ( as applied to wiring methods)

A

Capable of being removed or exposed without damaging the building structure or finish or not permenently closed in by the structure or finish.

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3
Q

Accessible, Readlily ( Readily Accesible)

A

Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, and so forth.

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4
Q

Ampacity

A

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

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5
Q

Appliance

A

Utilization equipment, generally other than industrial, that is normally built in standardized sizes or types and is installed or connected as a unit to perform one or more functions such as clothes washing, air conditioning, food mixing, deep frying, and so forth

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6
Q

Approved

A

Acceptable to the authority having jurisdiction.

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7
Q

Askarel

A

A generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media. Askarels of various compositional types are used. Under arcing conditions, the gases produced, while consisting predominantly of noncombustible hydrogen choride, can include varying amounts of combustible gases, depending on the askarel type.

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8
Q

Attachment Plug (Plug Cap) (Plug)

A

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.

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9
Q

Authority Having Jurisdiction (AHJ)

A

An organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or procedure.

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10
Q

Automatic

A

Self-acting, operating by its own mechanism when actuated by some impersonal influence, as, for example. a change in current, pressure, temperature, or mechacnical configuration.

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11
Q

Bathroom

A

An area including a basin with one or more of the following; a toilet, a tub, or a shower.

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12
Q

Bonded ( Bonding )

A

Connected to establish electrical conitnuity and conductivity.

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13
Q

Bonding Jumper

A

A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.

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14
Q

Bonding Jumper, Main

A

The connection between the grounded circuit conductor and the equipment grounding conductor at the service.

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15
Q

Branch Circuit

A

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).

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16
Q

Branch Circuit, Appliance

A

A branch circuit that supplies energy to one or more outlets to which appliances are to be connected and that has no permanently connected luminaires that are not a part of an appliance.

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17
Q

Branch Circuit, General-Purpose

A

A branch circuit that supplies two or more receptacles or outlet for lighting and appliances.

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18
Q

Branch Circuit, Individual

A

A branch circuit that supplies only one utilization equipment.

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19
Q

Branch Circuit, Multwire

A

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 each ungrounded conductor of the circuit an that is connected to the neutral or grounded conductor of the system.

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20
Q

Branch Circuit, Overcurrent Device

A

A Device capable of prociding protection for service, feeder, and branch circuits and equipment over the full range of overcurrents between tits rated current and its interrupting rating. Branch -circuit overcurrent protective devices are provided with interrupting rating appropriate for the intended use but no less than 5,000 amperes.

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21
Q

Circuit Breaker

A

A device designed to open and close a circuit by nonautomatic means and to open the circuit auto-matically on a predetermined overcurrent without damage to itself when properly applied within its rating.

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22
Q

Adjustable (Circuit Breaker)

A

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.

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23
Q

Instantaneous Trip (Circuit Breaker)

A

A qualifiying term indicating that no delay is purposely introduced in the tripping action of the circuit breaker.

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24
Q

Inverse Time ( Circuit Breaker )

A

A qualifying term indicating that there is a purposely introduced a delay in the tripping action of the circuit breaker, which delay decreases as the magnitude of the current increases.

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25
Q

Nonadjustable ( Circuit Breaker )

A

A qualifying term indicating that the circuit breaker does not have an adjustment to alter the value of current at which it will trip or the time required for its operation.

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26
Q

Setting ( Circuit Breaker )

A

The value of current, time, or both, at which an adjustable circuit breaker is set to trip.

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27
Q

Clothes, Closet

A

A non-habitable room or space intended primarily for storage of garments and apparel.

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28
Q

Communications Equipment

A

The electronic equipment that performs the telecommunications operations for the transmission of audio, video, and data, and includes power equipment (i.e. converters, inverters, and batteries) and technical support equipment (i.e. computers)

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29
Q

Concealed

A

Rendered inaccesible by the structure or finish of the building. Wires in concealed raceways are considered concealed, even though they may become accessible by withdrawing them.

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30
Q

Conductor, Bare

A

A conductor having no covering or electrical insulation whatsoever.

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31
Q

Conductor, Covered

A

A conductor encased within material of composition or thickness, that is not recognized by this Code is electrical insulation.

32
Q

Conductor, Insulated

A

A conductor encased within material of composition and thickness that is recgnized by this Code as electrical insulation.

33
Q

Conduit Body (condulet)

A

A seperate 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.

34
Q

Connector, Pressure ( Solderless )

A

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 use of solder.

35
Q

Continuous Load

A

A load where the maximum current is expected to continue for 3 hours or more.

36
Q

Controller

A

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.

37
Q

Cooking Unit, Counter Mounted

A

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.

38
Q

Coordination ( Selective )

A

Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the choice of overcurrent protective devices and their rating.

39
Q

Copper- Clad Aluminum Conductors

A

Conductors drawn from a copper-clad aluminum rod with copper metallurgically bonded to an aluminum core. The copper forms a minimum of 10 percent of the cross-sectional area of a solid conductor of a stranded conductor.

40
Q

Cutout Box

A

An enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescoping with the walls of the proper box.

41
Q

Dead Front

A

Without live parts exposed to a person on the operating side of the equipment.

42
Q

Demand Factor

A

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.

Maximum Demand

________________

Total Connected Load

43
Q

Device

A

A unit of an electrical system that carries or controls electric energy.

44
Q

Disconnecting Means

A

A device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply.

45
Q

Dusttight

A

Constructed so that dust will not enter the enclosing case under specified test conditions.

46
Q

Duty, Continuous

A

Operation at a substantiallly constant load for an indefinitely long time.

47
Q

Duty, Intermittent

A

Operation for alternate intervals of

(1) load and no load
(2) load and rest
(3) load, no load, and rest

48
Q

Duty, Periodic

A

Intermittent operation in which the load conditions are regularly recurrent.

49
Q

Duty, Short-Time

A

Operation at a substantially constant load for a short and definite, specified time.

50
Q

Duty, Varying

A

Operation at loads, and for intervals of time, both of which may be subject to wide variation.

51
Q

Dwelling, One Family

A

A building that consists soley of one dwelling unit.

52
Q

Dwelling, Two-Family

A

A building that consists solely of two dwelling units.

53
Q

Dwelling, Multifamily

A

A building that contains three or more dwelling units.

54
Q

Dwelling Unit

A

A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.

55
Q

Electric sign

A

A fixed, stationary, or portable self-contained, illuminated utilization equipment with words or symbols designed to convey information or attract attention.

56
Q

Enclosed

A

Surrounded by a case, housing, fence or wall(s) that prevents persons from accidentally contacting energized parts.

57
Q

Enclosure

A

The case case or housing of apparatus, or the fence or wall surrounding an installation to preven personnel from accidentally contacting energized parts or to protect the equipment from physical damage.

58
Q

Energized

A

Electrically connected to, or is, a source of voltage.

59
Q

Equipment

A

A general term, including material, fittings, devices, appliances, luminaires, apparatus, machinery, and the like used as a part of, or in connection with, an electrical installation.

60
Q

Exposed ( as applied to live parts )

A

Capable of being inadvertently touched or approached nearer than a safe distance by a person. It is applied to the parts that are not suitably guarded, isolated, and insulated.

61
Q

Exposed ( as applied to wiring methods)

A

On or attached to the surface or behind panels designed to allow access.

62
Q

Externally Operable

A

Capable of being operated without exposing the operator to contact with live parts.

63
Q

Feeder

A

All circuit conductors between the service equipment, the source of a seperately derived system, or other power supply source and the final branch-circuit overcurrent device.

64
Q

Festoon Lighting

A

A string of outdoor lights that is suspended between points

65
Q

Fitting

A

An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than a electrical function.

66
Q

Garage

A

A building or portion of a building in which one or more self-propelled vehicles can be kept for use, sale, storage, rental, repair, exhibition, or demonstration purposes.

67
Q

Ground

A

The Earth

68
Q

Grounded ( Grounding )

A

Connected (connecting) to ground or to a conductive body that extends the ground connection.

69
Q

Grounded, Solidly

A

Connected to ground without inserting any resistor or impedance device.

70
Q

Grounded Conductor

A

A system or circuit conductor that is intentionally grounded.

71
Q

Ground-Fault Circuit Interrupter (GFCI)

A

A device intended for the protection of personnel that function to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds the values established for a Class A device

GFCI trip at 6mA or higher

72
Q

Ground-Fault Protection of Equipment

A

A system intended to provide protection of equipment from damaging line-to-ground fault currents by operating to cause a disconnecting means to open all ungrounded conducotros of the faulted circuit. This protections is provided at current levels less than those required to protect conductors from damage through the operating of a supply circuit overcurrent device.

73
Q

Grounding conductor.

A

A conductor used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes.

74
Q

Grounding Conductor, Equipment

A

The conductive path installed to connect normally non-current-carrying metal parts of equipment together and to the system grounded conductor or to the grounding electrode conductor, or both.

EGC also performs bonding

75
Q
A
76
Q

Grounding Electrode

A

A conducting object through which a direct connection to earth is established.

77
Q

Grounding Electrode Conductor

A

A conductor used to connect the system grounded conductor or the equipment to a grounding electrode or to a point on the grounding electrode system.

NEC 2008 Definitons (1 decks)

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