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Electrical Code Book > Article 100 - Definitions > Flashcards

Article 100 - Definitions Flashcards

1
Q

Identified (as applied to equipment).

A

Recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular Code requirement. (CMP-1)

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2
Q

In Sight From (Within Sight From, Within Sight).

A

Where this Code specifies that one equipment shall be “in sight from,” “within sight from,” or “within sight of,” and so forth, another equipment, the specified equipment is to be visible and not more than 15 m (50 ft) distant from the other. (CMP-1)

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3
Q

Industrial Control Panel.

A

An assembly of two or more components consisting of one of the following: (1) power circuit components only, such as motor controllers, overload relays, fused disconnect switches, and circuit breakers; (2) control circuit components only, such as push buttons, pilot lights, selector switches, timers, switches, and control relays; (3) a combination of power and control circuit components. These components, with associated wiring and terminals, are mounted on, or contained within, an enclosure or mounted on a subpanel.

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4
Q

Information Technology Equipment (ITE).

A

Equipment and systems rated 1000 volts or less, normally found in offices or other business establishments and similar environments classified as ordinary locations, that are used for creation and manipulation of data, voice, video, and similar signals that are not communications equipment as defined in Part I of Article 100 and do not process communications circuits as defined

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5
Q

Innerduct.

A

A nonmetallic raceway placed within a larger raceway. (CMP-16)

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6
Q

Interactive Inverter.

A

An inverter intended for use in parallel with an electric utility to supply common loads that may deliver power to the utility. (CMP-13)

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7
Q

Interactive System.

A

An electric power production system that is operating in parallel with and capable of delivering energy to an electric primary source supply system. (CMP-4)

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8
Q

Interrupting Rating.

A

The highest current at rated voltage that a device is identified to interrupt under standard test conditions. (CMP-10)

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9
Q

Intersystem Bonding Termination.

A

A device that provides a means for connecting intersystem bonding conductors for communications systems to the grounding electrode system.(CMP-16)

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10
Q

Intrinsically Safe Apparatus.

A

Apparatus in which all the circuits are intrinsically safe. (CMP-14)

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11
Q

Intrinsically Safe System [as applied to Hazardous (Classified) Locations].

A

An assembly of interconnected intrinsically safe apparatus, associated apparatus, and interconnecting cables, in that those parts of the system that may be used in hazardous (classified) locations are intrinsically safe circuits. (CMP-14)

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12
Q

Isolated (as applied to location).

A

Not readily accessible to persons unless special means for access are used. (CMP-1)

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13
Q

Kitchen.

A

An area with a sink and permanent provisions for food preparation and cooking. (CMP-2)

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14
Q

Labeled.

A

Equipment or materials to which has been attached a label, symbol, or other identifying mark of an organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of production of labeled equipment or materials, and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner. (CMP-1)

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15
Q

Lighting Outlet.

A

An outlet intended for the direct connection of a lampholder or luminaire. (CMP-18)

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16
Q

Lighting Track (Track Lighting).

A

A manufactured assembly designed to support and energize luminaires that are capable of being readily repositioned on the track. Its length can be altered by the addition or subtraction of sections of track.(CMP-18)

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17
Q

Listed.

A

Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the equipment, material, or service meets appropriate designated standards or has been tested and found suitable for a specified purpose. (CMP-1)

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18
Q

Live Parts.

A

Energized conductive components. (CMP-1)

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19
Q

Location, Damp.

A

Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture. (CMP-1)

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20
Q

Location, Dry.

A

A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction. (CMP-1)

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21
Q

Location, Wet.

A

Installations underground or in concrete slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids, such as vehicle washing areas; and in unprotected locations exposed to weather. (CMP-1)

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22
Q

Luminaire.

A

A complete lighting unit consisting of a light source such as a lamp or lamps, together with the parts designed to position the light source and connect it to the power supply. It may also include parts to protect the light source or the ballast or to distribute the light. A lampholder itself is not a luminaire. (CMP-18)

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23
Q

Mobile Equipment.

A

Equipment with electrical components suitable to be moved only with mechanical aids or is provided with wheels for movement by person(s) or powered devices. (CMP-14)

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24
Q

Motor Control Center.

A

An assembly of one or more enclosed sections having a common power bus and principally containing motor control units. (CMP-11)

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25
Q

Multioutlet Assembly.

A

A type of surface, flush, or freestanding raceway designed to hold conductors and receptacles, assembled in the field or at the factory. (CMP-18)

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26
Q

Neutral Conductor.

A

The conductor connected to the neutral point of a system that is intended to carry current under normal conditions. (CMP-5)

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27
Q

Neutral Point.

A

The common point on a wye-connection in a polyphase system or midpoint on a single-phase, 3-wire system, or midpoint of a single-phase portion of a 3-phase delta system, or a midpoint of a 3-wire, direct-current system. (CMP-5)

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28
Q

Nonautomatic.

A

Requiring human intervention to perform a function. (CMP-1)

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29
Q

Nonconductive Optical Fiber Cable.

A

A factory assembly of one or more optical fibers having an overall covering and containing no electrically conductive materials. (CMP-16)

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30
Q

Nonincendive Circuit [as applied to Hazardous (Classified) Locations].

A

A circuit, other than field wiring, in which any arc or thermal effect produced under intended operating conditions of the equipment, is not capable, under specified test conditions, of igniting the flammable gas–air, vapor–air, or dust–air mixture. (CMP-14)

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31
Q

Nonincendive Component [as applied to Hazardous (Classified) Locations].

A

A component having contacts for making or breaking an incendive circuit and the contacting mechanism is constructed so that the component is incapable of igniting the specified flammable gas–air or vapor–air mixture. The housing of a nonincendive component is not intended to exclude the flammable atmosphere or contain an explosion. (CMP-14)

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32
Q

Nonincendive Equipment [as applied to Hazardous (Classified) Locations].

A

Equipment having electrical/electronic circuitry that is incapable, under normal operating conditions, of causing ignition of a specified flammable gas–air, vapor–air, or dust–air mixture due to arcing or thermal means. (CMP-14)

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33
Q

Nonincendive Field Wiring [as applied to Hazardous (Classified) Locations].

A

Wiring that enters or leaves an equipment enclosure and, under normal operating conditions of the equipment, is not capable, due to arcing or thermal effects, of igniting the flammable gas–air, vapor–air, or dust–air mixture. Normal operation includes opening, shorting, or grounding the field wiring. (CMP-14)

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34
Q

Nonincendive Field Wiring Apparatus [as applied to Hazardous (Classified) Locations].

A

Apparatus intended to be connected to nonincendive field wiring. (CMP-14)

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35
Q

Nonlinear Load.

A

A load where the wave shape of the steady-state current does not follow the wave shape of the applied voltage. (CMP-1)

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36
Q

Oil Immersion [as applied to Hazardous (Classified) Locations].

A

Electrical equipment immersed in a protective liquid in such a way that an explosive atmosphere that may be above the liquid or outside the enclosure cannot be ignited. (CMP-14)

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37
Q

Optical Fiber Cable.

A

A factory assembly or field assembly of one or more optical fibers having an overall covering. (CMP-16)

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38
Q

Outlet.

A

A point on the wiring system at which current is taken to supply utilization equipment. (CMP-1)

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39
Q

Outline Lighting.

A

An arrangement of incandescent lamps, electric-discharge lighting, or other electrically powered light sources to outline or call attention to certain features such as the shape of a building or the decoration of a window. (CMP-18)

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40
Q

Overcurrent.

A

Any current in excess of the rated current of equipment or the ampacity of a conductor. It may result from overload, short circuit, or ground fault. (CMP-10)

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41
Q

Overcurrent Protective Device, Branch-Circuit.

A

A device capable of providing protection for service, feeder, and branch circuits and equipment over the full range of overcurrents between its rated current and its interrupting rating. Such devices are provided with interrupting ratings appropriate for the intended use but no less than 5000 amperes. (CMP-10)

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42
Q

Overcurrent Protective Device, Supplementary.

A

A device intended to provide limited overcurrent protection for specific applications and utilization equipment such as luminaires and appliances. This limited protection is in addition to the protection provided in the required branch circuit by the branch-circuit overcurrent protective device. (CMP-10)

43
Q

Overload.

A

Operation of equipment in excess of normal, full-load rating, or of a conductor in excess of rated ampacity that, when it persists for a sufficient length of time, would cause damage or dangerous overheating. A fault, such as a short circuit or ground fault, is not an overload. (CMP-10)

44
Q

Panelboard.

A

A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices, and equipped with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall, partition, or other support; and accessible only from the front. (CMP-9)

45
Q

Photovoltaic (PV) System.

A

The total components and subsystem that, in combination, convert solar energy into electric energy for connection to a utilization load. (CMP-4)

46
Q

Plenum.

A

A compartment or chamber to which one or more air ducts are connected and that forms part of the air distribution system. (CMP-3)

47
Q

Portable Equipment.

A

Equipment with electrical components suitable to be moved by a single person without mechanical aids. (CMP-14)

48
Q

Power Outlet.

A

An enclosed assembly that may include receptacles, circuit breakers, fuseholders, fused switches, buses, and watt-hour meter mounting means; intended to supply and control power to mobile homes, recreational vehicles, park trailers, or boats or to serve as a means for distributing power required to operate mobile or temporarily installed equipment.(CMP-19)

49
Q

Premises Wiring (System).

A

Interior and exterior wiring, including power, lighting, control, and signal circuit wiring together with all their associated hardware, fittings, and wiring devices, both permanently and temporarily installed. This includes (a) wiring from the service point or power source to the outlets or (b) wiring from and including the power source to the outlets where there is no service point.

Such wiring does not include wiring internal to appliances, luminaires, motors, controllers, motor control centers, and similar equipment. (CMP-1)

50
Q

Pressurized [as applied to Hazardous (Classified) Locations].

A

The process of supplying an enclosure with a protective gas with or without continuous flow, at sufficient pressure to prevent the entrance of combustible dust or ignitible fibers/flyings. (CMP-14)

51
Q

Process Seal [as applied to Hazardous (Classified) Locations].

A

A seal between electrical systems and flammable or combustible process fluids where a failure could allow the migration of process fluids into the premises’ wiring system. (CMP-14)

52
Q

Purged and Pressurized [as applied to Hazardous (Classified) Locations].

A

The process of (1) purging, supplying an enclosure with a protective gas at a sufficient flow and positive pressure to reduce the concentration of any flammable gas or vapor initially present to an acceptable level; and (2) pressurization, supplying an enclosure with a protective gas with or without continuous flow at sufficient pressure to prevent the entrance of a flammable gas or vapor, a combustible dust, or an ignitible fiber. (CMP-14)

53
Q

Qualified Person.

A

One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved. (CMP-1)

54
Q

Raceway.

A

An enclosed channel designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code. (CMP-8)

55
Q

Rainproof

A

Constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions. (CMP-1)

56
Q

Raintight.

A

Constructed or protected so that exposure to a beating rain will not result in the entrance of water under specified test conditions. (CMP-1)

57
Q

Receptacle.

A

A contact device installed at the outlet for the connection of an attachment plug, or for the direct connection of electrical utilization equipment designed to mate with the corresponding contact device. A single receptacle is a single contact device with no other contact device on the same yoke. A multiple receptacle is two or more contact devices on the same yoke. (CMP-18)

58
Q

Receptacle Outlet.

A

An outlet where one or more receptacles are installed. (CMP-18)

59
Q

Remote-Control Circuit.

A

Any electrical circuit that controls any other circuit through a relay or an equivalent device. (CMP-3)

60
Q

Retrofit Kit.

A

A general term for a complete subassembly of parts and devices for field conversion of utilization equipment. (CMP-18)

61
Q

Sealable Equipment.

A

Equipment enclosed in a case or cabinet that is provided with a means of sealing or locking so that live parts cannot be made accessible without opening the enclosure. (CMP-1)

62
Q

Separately Derived System.

A

An electrical source, other than a service, having no direct connection(s) to circuit conductors of any other electrical source other than those established by grounding and bonding connections. (CMP-5)

63
Q

Service.

A

The conductors and equipment for delivering electric energy from the serving utility to the wiring system of the premises served. (CMP-4)

64
Q

Service Cable.

A

Service conductors made up in the form of a cable. (CMP-4)

65
Q

Service Conductors.

A

The conductors from the service point to the service disconnecting means. (CMP-4)

66
Q

Service Conductors, Overhead.

A

The overhead conductors between the service point and the first point of connection to the service-entrance conductors at the building or other structure. (CMP-4)

67
Q

Service Conductors, Underground.

A

The underground conductors between the service point and the first point of connection to the service-entrance conductors in a terminal box, meter, or other enclosure, inside or outside the building wall. (CMP-4)

68
Q

Service Drop.

A

The overhead conductors between the utility electric supply system and the service point. (CMP-4)

69
Q

Service-Entrance Conductors, Overhead System.

A

The service conductors between the terminals of the service equipment and a point usually outside the building, clear of building walls, where joined by tap or splice to the service drop or overhead service conductors. (CMP-4)

70
Q

Service-Entrance Conductors, Underground System.

A

The service conductors between the terminals of the service equipment and the point of connection to the service lateral or underground service conductors. (CMP-4)

71
Q

Service Equipment.

A

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 to a building or other structure, or an otherwise designated area, and intended to constitute the main control and cutoff of the supply. (CMP-4)

72
Q

Service Lateral.

A

The underground conductors between the utility electric supply system and the service point. (CMP-4)

73
Q

Service Point.

A

The point of connection between the facilities of the serving utility and the premises wiring. (CMP-4)

74
Q

Short-Circuit Current Rating.

A

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. (CMP-10)

75
Q

Show Window.

A

Any window, including windows above doors, used or designed to be used for the display of goods or advertising material, whether it is fully or partly enclosed or entirely open at the rear and whether or not it has a platform raised higher than the street floor level. (CMP-2)

76
Q

Signaling Circuit.

A

Any electrical circuit that energizes signaling equipment. (CMP-3)

77
Q

Simple Apparatus [as applied to Hazardous (Classified) Locations].

A

An electrical component or combination of components of simple construction with well-defined electrical parameters that does not generate more than 1.5 volts, 100 mA, and 25 mW, or a passive component that does not dissipate more than 1.3 watts and is compatible with the intrinsic safety of the circuit in which it is used. (CMP-14)

78
Q

Special Permission.

A

The written consent of the authority having jurisdiction. (CMP-1)

79
Q

Stand-Alone System.

A

A system that supplies power independently of an electrical production and distribution network.(CMP-4)

80
Q

Structure.

A

That which is built or constructed, other than equipment. (CMP-1)

81
Q

Surge Arrester.

A

A protective device for limiting surge voltages by discharging or bypassing surge current; it also prevents continued flow of follow current while remaining capable of repeating these functions. (CMP-5)

82
Q

Surge-Protective Device (SPD).

A

A protective device for limiting transient voltages by diverting or limiting surge current; it also prevents continued flow of follow current while remaining capable of repeating these functions and is designated as follows:

Type 1: Permanently connected SPDs intended for installation between the secondary of the service transformer and the line side of the service disconnect overcurrent device.

Type 2: Permanently connected SPDs intended for installation on the load side of the service disconnect overcurrent device, including SPDs located at the branch panel.

Type 3: Point of utilization SPDs.

Type 4: Component SPDs, including discrete components, as well as assemblies. (CMP-5)

83
Q

Switch, Bypass Isolation.

A

A manually operated device used in conjunction with a transfer switch to provide a means of directly connecting load conductors to a power source and of disconnecting the transfer switch. (CMP-13)

84
Q

Switch, General-Use.

A

A switch intended for use in general distribution and branch circuits. It is rated in amperes, and it is capable of interrupting its rated current at its rated voltage. (CMP-9)

85
Q

Switch, General-Use Snap.

A

A form of general-use switch constructed so that it can be installed in device boxes or on box covers, or otherwise used in conjunction with wiring systems recognized by this Code. (CMP-9)

86
Q

Switch, Isolating.

A

A switch intended for isolating an electrical circuit from the source of power. It has no interrupting rating, and it is intended to be operated only after the circuit has been opened by some other means. (CMP-9)

87
Q

Switch, Motor-Circuit.

A

A switch rated in horsepower that is capable of interrupting the maximum operating overload current of a motor of the same horsepower rating as the switch at the rated voltage. (CMP-11)

88
Q

Switch, Transfer.

A

An automatic or nonautomatic device for transferring one or more load conductor connections from one power source to another. (CMP-13)

89
Q

Switchboard.

A

A large single panel, frame, or assembly of panels on which are mounted on the face, back, or both, switches, overcurrent and other protective devices, buses, and usually instruments. These assemblies are generally accessible from the rear as well as from the front and are not intended to be installed in cabinets. (CMP-9)

90
Q

Switchgear.

A

An assembly completely enclosed on all sides and top with sheet metal (except for ventilating openings and inspection windows) and containing primary power circuit switching, interrupting devices, or both, with buses and connections. The assembly may include control and auxiliary devices. Access to the interior of the enclosure is provided by doors, removable covers, or both. (CMP-9)

91
Q

Thermal Protector (as applied to motors).

A

A protective device for assembly as an integral part of a motor or motor-compressor that, when properly applied, protects the motor against dangerous overheating due to overload and failure to start. (CMP-11)

92
Q

Thermally Protected (as applied to motors).

A

The words Thermally Protected appearing on the nameplate of a motor or motor-compressor indicate that the motor is provided with a thermal protector. (CMP-11)

93
Q

Unclassified Locations [as applied to Hazardous (Classified) Locations].

A

Locations determined to be neither Class I, Division 1; Class I, Division 2; Class I, Zone 0; Class I, Zone 1; Class I, Zone 2; Class II, Division 1; Class II, Division 2; Class III, Division 1; Class III, Division 2; Zone 20; Zone 21; Zone 22; nor any combination thereof. (CMP-14)

94
Q

Ungrounded

A

Not connected to ground or to a conductive body that extends the ground connection. (CMP-5)

95
Q

Uninterruptible Power Supply.

A

A power supply used to provide alternating current power to a load for some period of time in the event of a power failure. (CMP-13)

96
Q

Utilization Equipment.

A

Equipment that utilizes electric energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes. (CMP-1)

97
Q

Ventilated.

A

Provided with a means to permit circulation of air sufficient to remove an excess of heat, fumes, or vapors.(CMP-14)

98
Q

Volatile Flammable Liquid.

A

A flammable liquid having a flash point below 38°C (100°F), or a flammable liquid whose temperature is above its flash point, or a Class II combustible liquid that has a vapor pressure not exceeding 276 kPa (40 psia) at 38°C (100°F) and whose temperature is above its flash point. (CMP-14)

99
Q

Voltage (of a circuit).

A

The greatest root-mean-square (rms) (effective) difference of potential between any two conductors of the circuit concerned. (CMP-1)

100
Q

Voltage, Nominal.

A

A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class (e.g., 120/240 volts, 480Y/277 volts, 600 volts). (CMP-1)

101
Q

Voltage to Ground.

A

For grounded circuits, the voltage between the given conductor and that point or conductor of the circuit that is grounded; for ungrounded circuits, the greatest voltage between the given conductor and any other conductor of the circuit. (CMP-1)

102
Q

Watertight.

A

Constructed so that moisture will not enter the enclosure under specified test conditions. (CMP-1)

103
Q

Weatherproof.

A

Constructed or protected so that exposure to the weather will not interfere with successful operation. (CMP-1)

Electrical Code Book (1 decks)

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