art. 100 terms Flashcards
the maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating
ampacity
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
appliance
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 part of an appliance
branch circuit, 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 arcing and by functioning to de-energize the circuit when an arc fault is detected.
Arc-Fault Circuit Interrupter
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
Connected to establish electrical continuity and conductivity
bonded (bonding)
The connection between two or more portions of the equipment grounding conductor
bonding jumper, equipment
The connection between the grounded circuit conductor and th equipment grounding conductor, or the supply-side bonding jumper, or both, at the service
bonding jumper, main
A conductor installed on the supply side of a service or within a service equipment enclosure, or for a separately derived system, that ensures the required electrical conductivity between metal parts required to be electrically connected
bonding jumper, supply side
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, system
The circuit conductor between the final overcurrent device protecting the circuit and the outlets
branch circuit
A structure that stands alone or that is separated from adjoining structures by fire walls
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 device designed to open and close a circuit by nonautomatic means and to pen the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating
circuit breaker
Rendered inaccessible by the structure or finish of the building
concealed
Operation at a substantially constant load for an indefinitely long time
duty, continuous
A load where the maximum current is expected to continue for 3 hours or more
continuous load
A device or group of devices that serves to govern in some predetermined manner, the electric power delivered too the apparatus to which it is connected
controller
A conductor encased within a material of composition or thickness that is not recognized by this code as electrical insulation
conductor, covered
An enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescoping with the walls of the enclosure
cutout box
Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture
Location, damp
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
A location not normally subject to dampness or wetness, may be temporarily subject to in the case of a building under construction
Location, dry
Enclosures constructed so that dust will not enter under specified test conditions
dusttight
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
An intentionally constructed, low-impedance electrically conductive path designed and intended to carry current under ground-fault conditions from 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
Surrounded by a case, housing, fence, or wall 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 from accidentally contacting energized parts or to protect the equipment from physical damage
enclosure
Electrically connected to, or is a source of voltage
energized
A conductive path that is part of an effective ground-fault current path and connects normally non-current-carrying metal parts of equipment together and to the system grounded conductor or to the grounding electrode conductor or both
Grounding Conductor, Equipment
Equipment enclosed in a case that is capable of withstanding an explosion of a specified gas or vapor that may occur within it and preventing the ignition of a specified gas or vapor surrounding the enclosure by sparks, flashes, or explosion of the gas or vapor within, and that operates at such an external temperature that a surrounding flammable atmosphere will not be ignited thereby
Explosionproof Equipment
On or attached to the surface or behind panels designed to allow access
Exposed (as applied to live parts)
All Circuit conductors between the service equipment, the source of a separately derived system, or other power supply sources and the final branch-circuit overcurrent device
Feeder
An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function
Fitting
A branch circuit that supplies two or more receptacles or outlets for lighting and appliances
Branch Circuit, General-Purpose
A switch intended for the 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
Switch, General-Use
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
Switch, General-Use Snap
An unintentional, electrically conductive connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors, metallic enclosures, metallic raceways, metallic equipment, or earth
Ground Fault
Connected to ground or to a conductive body that extends the ground connection
Grounded
A system or circuit conductor that is intentionally grounded
Grounded Conductor
A conducting object through which a direct connection to earth is established
Grounding Electrode
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
Grounding Electrode Conductor
A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a ground-fault current exceeds the values established for a device
Ground-Fault Circuit Interrupter (GFCI)
An electrically conductive path from the point of a ground fault on a wiring system through normally non-current-carrying conductors, grounded conductors, equipment, or the earth to the electrical supply source
Ground-Fault Current Path
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 conductors of the faulted circuit. This protection is provided at current levels less than those required to protect conductors from damage through the operation of a supply circuit overcurrent device
Ground-Fault Protection of Equipment
Covered, shielded, fenced, enclose, or otherwise protected by means of suitable covers, casings, barriers, rails, screens, mats, or platforms to remove the likelihood of approach or contact by persons or objects to a point of danger
Guarded
Recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular code requirement
Identified (as applied to equipment)
A branch circuit that supplies only one utilization equipment
Branch Circuit, Individual
Where this code specifies that one equipment shall be visible and not more than 50 feet distant from the other
In Sight From
A qualifying term indicating that no delay is purposely introduced in the tripping action of the device
Instantaneous Trip Circuit Breaker
A conductor encased within material of composition and thickness that is recognized by this code as electrical insulation
Insulated Conductor
The highest current at rated voltage that a device is identified to interrupt under standard test conditions
Interrupting Rating
A device that provides a means for connecting this type conductors for communications systems to the grounding electrode system
Intersystem Bonding Termination
A qualifying term indicating that there is purposely introduced a delay in the tripping action of the device, which delay decreases as the magnitude of the current increases
inverse Time Circuit Breaker
Not readily accessible to persons unless special means for access are used
Isolated
An outlet intended for the direct connection of a lampholder or luminaire
Lighting Outlet
Equipment, materials, or services included and meeting appropriate designated standards or has been tested and found suitable for a specified purpose by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products and services, maintaining periodic inspection of production or evaluation of services
Listed
Energized conductive components
Live Parts
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. Not a lampholder itself.
Luminaire
An assembly of one or more enclosed sections having a common power bus and principally containing these units.
Motor Control Center
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
Switch, Motor-Circuit
A type of surface, flush, or freestanding raceway designed to hold conductors and receptacles, assembled in the field or at the factory
Multioutlet Assembly
A branch circuit that consist 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 conductor of the system.
Branch Circuit, Multiwire
They are real
goblins
A load where the wave shape of the steady state current does no follow the wave shape of the applied voltage
Nonlinear Load
A point on the wiring system at which current is taken to supply utilization equipment
Outlet
Any current in excess of the rated current of the equipment or the ampacity of a conductor. It may result from overload, short circuit, or ground fault.
Overcurrent
Operation of equipment in excess of normal, full load rating, or of a conductor in excess of its ampacity that, when it persists for a sufficient length of time, would cause damage or dangerous overheating. Not a fault, such as a short circuit or ground fault.
Overload
A single or group of units designed for assembly in a single form, 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.
Panelboard
An encased assembly that may include receptacles, circuit breakers, fuseholders, fuse switches, buses, and watt-hour meter mounting means; intended to supply and control power to mobile hoe, recreation vehicles, park trailers, or boats or to serve as a means for distributing power required to operate mobile or temporarily installed equipment.
Power Outlet
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 wiring from the service point or power source to the outlets or wiring from and including the power source to the outlets where there is no service point.
Premises Wiring
Constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions.
Rainproof
Constructed or protected so that exposure to a beating rain will not result in the entrance of water under specified test conditions.
Raintight
Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom this is requisite to take actions such as to use tools (other than keys), to climb over or under, to remove obstacles. or to resort to portable ladders
Readily Accessible
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.
Receptacle
An outlet where one or more receptacles are installed
Receptacle Outlet
An electrical source, other than a service, having no direct connections to circuit conductors of any other electrical source other than those established by grounding and bonding connections.
Separately Derived System
The conductors and equipment connecting the serving utility to the wiring system of the premises served.
Service
The conductors from the service point to the service disconnecting means.
Service Conductors
The overhead conductors between the service point and the first point of connection to the service-entrance conductors at the building or other structure.
Service Conductors, Overhead
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.
Service Conductors, Underground
The overhead conductors between the serving utility and the service point.
Service Drop
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.
Service-Entrance Conductors, Overhead System
The service conductors between the terminals of the service equipment and the point of connection to the service lateral or underground service conductors.
Service-Entrance Conductors, Underground System
The necessary equipment, consisting of circuit breakers or switches and fuses and their accessories, connected to the serving utility and intended to constitute the main control and disconnect of the serving utility.
Service Equipment
The underground conductors between the utility electric supply system and the service point.
Service Lateral
The point of connection between the facilities of the serving utility and the premises wiring.
Service Point
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.
Short-Circuit Current Rating
That which is build or constructed, other than equipment.
Structure
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.
Switchboard
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.
Switchgear
A conductor, other than a service conductor, that has overcurrent protection ahead of its point of supply that exceeds the value permitted for similar conductors that are protected as described elsewhere
Tap Conductor 240.2
An automatic or nonautomatic device for transferring one or more load conductor connections from one power source to another.
Switch, Transfer
Equipment that utilizes electric energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes.
Utilization Equipment
A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class
Voltage, Nominal
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.
Voltage to Ground
Constructed so that moisture will not enter the enclosure under specified test conditions.
Watertight
Constructed or protected so that exposure to the weather will not interfere with successful operation.
Weatherproof
Installations underground or in concrete slabs or masonry n 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.
Location, Wet
