[NEC2020] - SERVICE DEFINITIONS Flashcards
[Connected] to establish electrical continuity and conductivity. (CMP-5)
Bonded (Bonding)
A reliable conductor to ensure the required electrical conductivity [between metal parts required to be electrically connected.]
(CMP-5)
Bonding Conductor or Jumper
The [connection between] two or more portions of the (equipment) grounding conductor. (CMP-5)
Bonding Jumper, Equipment
The connection between the grounded circuit conductor and the equipment grounding conductor, or the supply-side (bonding jumper), or both, at the service. (CMP-5)
Bonding Jumper, Main
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.
(CMP-10)
Circuit Breaker
A device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply.
(CMP-1)
Disconnecting Means
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. (CMP-5)
Effective Ground-Fault Current Path
The earth (CMP-5)
Ground
An unintentional, electrically conductive connection between an ungrounded conductor or an electrical circuit and the normally non-current- carrying conductors, metallic enclosures, metallic raceways, metallic equipment, or earth. (CMP-5)
Ground Fault
Connected (connecting) to ground or to a conductive body that extends the ground connection. (CMP-5)
Grounded (Grounding)
Not connected to ground or to a conductive body that extends the ground connection. (CMP-5)
Ungrounded
A system or circuit (conductor) that is intentionally (grounded). (CMP-5)
Grounded 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 to ground exceeds the values established for a Class A device. (CMP-2)
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. (CMP-5).
Ground -Fault Current Path
A conductive path(s) 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. (CMP-5).
Grounding Conductor, Equipment (EGC)
A conducting object through which a direct connection to earth is established. (CMP-5)
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. (CMP-5)
Grounding Electrode Conductor “GEC”
A device that provides a means for connecting intersystem bonding conductors for communications systems to the grounding electrode system. (CMP-16)
Intersystem Bonding Termination “IBT”
The (conductor) connected to the (neutral) point of a system that is intended to carry current under normal conditions. (CMP-5)
Neutral Conductor
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)
Neutral Point
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)
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. A fault, such as a short circuit or ground fault, is not an (overload). (CMP-10)
Overload
The conductors and equipment connecting the serving utility to the wiring system of the premises (served). (CMP-10)
Service
Service conductors made up in the form of a cable. (CMP-10)
Service Cable
The conductors from the service point to the service disconnecting means. (CMP-10)
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. (CMP-10)
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.
(CMP-10)
Service Conductor, Underground
The overhead conductors between the serving utility and the service point. (CMP-10)
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. (CMP-10)
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. (CMP-10)
Service-Entrance Conductors, Underground System
The necessary equipment, consisting of a circuit breaker(s) or switch(es) and fuse(s) and their accessories, connected to the serving utility and intended to constitute the main control and disconnect of the serving utility.
(CMP-10)
Service Equipment
The underground conductors between the utility electric supply system and the service point. (CMP-10)
Service Lateral
The (point) of connection between the facilities of the (serving) utility and the premises wiring. (CMP-10)
Service Point
Not connected to ground or to a conductive body that extends the ground connection. (CMP-5)
Ungrounded
Constructed so that moisture will not enter the enclosure under specified test conditions. (CMP-1)
Watertight
