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PEC > PEC Terms > Flashcards

PEC Terms Flashcards

1
Q

Interconnected battery subsystems consisting of one or more storage batteries and battery chargers, and can include inverters, converters, and associated electrical equipment.

A

Battery System

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2
Q

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

A

Instantaneous Trip

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3
Q

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.

A

Inverse Time

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4
Q

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

A

Setting

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5
Q

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

A

Controller

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6
Q

Conductors drawn from a copper-clad aluminum rod with the copper metallurgically bonded to an aluminum core

A

Copper-Clad Aluminum Conductors

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7
Q

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

A

Disconnecting Means

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8
Q

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.

A

Fitting

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9
Q

A device that establishes an electrical connection to the earth

A

Grounding Electrode

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10
Q

An enclosure identified for use in underground systems, provided with an open or closed bottom, and sized to allow personnel to reach into, but not enter, for the purpose of installing, operating, or maintaining equipment or wiring or both.

A

Handhole Enclosure

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11
Q

A system comprised of multiple power source.

A

Hybrid System

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11
Q

The highest current at rated voltage that a device is intended to interrupt under standard test conditions.

A

Interrupting Rating

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12
Q

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.

A

Track Lighting

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13
Q

Energized conductive components

A

Live Parts

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14
Q

A complete lighting unit consisting of a lamp or lamps together with the parts designed to distribute the light, to position and protect the lamps and ballast (where applicable), and to connect the lamps to the power supply.

A

Luminaire

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14
Q

The conductor connected to the neutral point of a system that is intended to carry current under normal conditions.

A

Neutral Conductor

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15
Q

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.

A

Neutral Point

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16
Q

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

A

Nonconductive Optical Fiber Cable

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17
Q

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

A

Nonlinear Load

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18
Q

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.

A

Overcurrent

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19
Q

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.

A

Oil Immersion

20
Q

Operation of equipment in excess of normal, full-load rating, or of a conductor in excess of rated ampacity

A

Overload

21
Q

The total components and subsystem that, in combination, convert solar energy into electric energy suitable for connection to a utilization load.

A

Photovoltaic System

22
Q

An outlet where one or more receptacles are installed.

A

Receptable Outlet

23
Q

Service conductors made up in the form of a cable

A

Service Cable

24
Q

The conductors from the service point to the service disconnecting means.

A

Service Conductor

25
Q

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.

A

Process Seal

26
Q

The overhead conductors between the utility electric supply system and the service point.

A

Service Drop

27
Q

The conductors and equipment for delivering electric energy from the serving utility to the wiring system of the premises served

A

Service

28
Q

Any electric circuit that energizes signaling equipment.

A

Signaling Circuit

29
Q

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.

A

Switchgear

30
Q

An automatic or nonautomatic device for transferring one or more load conductor connections from one power source to another.

A

Transfer Switch

31
Q

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.

A

Separately Derived System

32
Q

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

A

Raintight

33
Q

One who has qualifications, 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.

A

Qualified Person

34
Q

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.

A

Pressurized

35
Q

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

A

Motor Control Center

36
Q

A nonmetallic raceway placed within a larger raceway.

A

Innerduct

37
Q

Connected (connecting) to earth or to some conducting body that serves in place of the earth.

A

Grounded (Grounding)

38
Q

A conductor having no covering or electrical insulation whatsoever.

A

Bare Conductor

39
Q

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

A

Uninterruptible Power Supply

40
Q

Equipment that utilizes electric energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes.

A

Utilization Equipment

41
Q

Constructed or protected so that exposure to the weather will not interfere with successful operation.

A

Weatherproof

42
Q

Constructed so that moisture will not enter the enclosure under specified test conditions.

A

Watertight

43
Q

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

A

Voltage

44
Q

Provided with a means to permit circulation of air sufficient to remove an excess of heat, fumes, or vapors.

A

Ventilated

45
Q

The Earth

A

Ground

46
Q

ot connected to ground or to a conductive body that extends the ground connection.

A

Ungrounded

47
Q

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.

A

Thermal Protector

48
Q

A system that supplies power independently of an electrical production and distribution network.

A

Stand-Alone System

PEC (1 decks)

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