PEC Quiz 2

30問 • 2年前

問題一覧

A _____________ switch or circuit breaker shall be equipped with a handle or other suitable operating means.

Manually operable

It can be manually or power-operable/circuit breaker, provided it can be opened by hand during power failure.

Powered-operated switch

Supplying only limited loads of a single branch circuit; the service disconnecting means shall have a rating of not less than 15A.

One Circuit Installation

For dwelling units with a single branch circuit a service disconnect means of not less than 20A is permitted.

One Circuit Installation-Dwelling Unit

For installation of not more than 2 wire branch circuits, the service disconnecting means shall have a rating of not less than 30A.

Two-Circuit Installations

The service disconnect shall have a rating of not less than 60A, 3-wire.

One Family Dwelling

A device that, when interrupting currents in its current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device were replaced with a solid conductor having comparable impedance.

Current-Limiting Overcurrent Protective Device

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.

Tap Conductor

Thermal relays and other devices not designed to open short circuits or ground faults shall not be used for the protection of conductors against overcurrent due to short circuits or ground faults, but the use of such devices shall be permitted to protect motor branch-circuit conductors from overload if protected.

Thermal Devices

No overcurrent device shall be connected in series with any conductor that is intentionally grounded.

Grounded Conductor

Where a change occurs in the size of the ungrounded conductor, a similar change shall be permitted to be made in the size of the grounded conductor.

Change in Size of Grounded Conductor

Overcurrent devices shall be readily accessible and shall be installed so that the center grip of the handle switch at its highest position is not more than 2 meters from the floor.

Accessibility

each occupant shall have ready access to all overcurrent devices protecting the conductors supplying that __________.

Occupancy

Circuit breakers shall be trip free and capable of being closed and opened by manual operation.

Method of Operation

The __________ of "up" position of the handle is "on" position and a "down" position is indicating it is in "off" position.

Indication

A circuit breaker shall be of such design that any alteration of its trip point (calibration) or the time required for its operation requires dismantling of the device or breaking of a seal for other than intended adiustments.

Nontamperable

Circuit breakers shall be marked with their ampere rating in a manner that will be durable and visible after installation

Durable and Visible

a ____ shall be connected in series with each ungrounded conductor.

Fuses

An unintentional, electrically conducting 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

An electrically conductive path from the point of a ground fault on a wiring system through normally non-current carrying conductors, equipment, or the earth to the electrical supply source.

Ground-Fault Current Path

connects the equipment grounding conductors, the service-equipment enclosures to the grounding electrode(s)

Grounding Electrode Conductor

A complete system of air terminals, conductors, ground terminals, interconnecting conductors, arresters, and other connectors or fittings required to complete the system.

Lighting Protection System

Generic terms for the component parts.

Rods and Points

All conductors, fittings, and fixture for protection not exceeding 23 m in height.

Class I Materials

All conductors, fittings and fixtures for protection exceeding 23 m in height, or one which has a structural steel frame, of any height.

Class II Materials

Steel with a coating of copper to bond it

Copper-Clad Steel

An attachment to secure the conductor to the structure

Fastener

The minimum temperature at which it gives off vapor in sufficient concentration to form an ignitable mixture with air near the surface of the liquid within the vessel.

Flash Point

A spark between nearby metallic objects to lighting protection system or to ground.

Sideflash

Any short air space between two conductors electrically insulated to each other.

Spark Gap

AC2 - LM2 (Reviewer)

ユーザ名非公開 · 38問 · 2年前

AC2 - LM2 (Reviewer)

38問 • 2年前

ユーザ名非公開

AC2 - SLM3 (Reviewer)

ユーザ名非公開 · 49問 · 2年前

AC2 - SLM3 (Reviewer)

HIRAC

HIRAC

MSE Reviewer

MSE Reviewer

EE12 Quiz 1

EE12 Quiz 1

PEC Definition - Quiz 1

ユーザ名非公開 · 45問 · 2年前

PEC Definition - Quiz 1

Quiz 2

Quiz 2

Chapter 5

Chapter 5

Chapter 6

Chapter 6

Quiz

Quiz

Finals

Finals

Fluids Finals

Fluids Finals

問題一覧

A _____________ switch or circuit breaker shall be equipped with a handle or other suitable operating means.

Manually operable

It can be manually or power-operable/circuit breaker, provided it can be opened by hand during power failure.

Powered-operated switch

Supplying only limited loads of a single branch circuit; the service disconnecting means shall have a rating of not less than 15A.

One Circuit Installation

For dwelling units with a single branch circuit a service disconnect means of not less than 20A is permitted.

One Circuit Installation-Dwelling Unit

For installation of not more than 2 wire branch circuits, the service disconnecting means shall have a rating of not less than 30A.

Two-Circuit Installations

The service disconnect shall have a rating of not less than 60A, 3-wire.

One Family Dwelling

Current-Limiting Overcurrent Protective Device

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.

Tap Conductor

Thermal Devices

No overcurrent device shall be connected in series with any conductor that is intentionally grounded.

Grounded Conductor

Where a change occurs in the size of the ungrounded conductor, a similar change shall be permitted to be made in the size of the grounded conductor.

Change in Size of Grounded Conductor

Overcurrent devices shall be readily accessible and shall be installed so that the center grip of the handle switch at its highest position is not more than 2 meters from the floor.

Accessibility

each occupant shall have ready access to all overcurrent devices protecting the conductors supplying that __________.

Occupancy

Circuit breakers shall be trip free and capable of being closed and opened by manual operation.

Method of Operation

The __________ of "up" position of the handle is "on" position and a "down" position is indicating it is in "off" position.

Indication

Nontamperable

Circuit breakers shall be marked with their ampere rating in a manner that will be durable and visible after installation

Durable and Visible

a ____ shall be connected in series with each ungrounded conductor.

Fuses

Ground Fault

An electrically conductive path from the point of a ground fault on a wiring system through normally non-current carrying conductors, equipment, or the earth to the electrical supply source.

Ground-Fault Current Path

connects the equipment grounding conductors, the service-equipment enclosures to the grounding electrode(s)

Grounding Electrode Conductor

A complete system of air terminals, conductors, ground terminals, interconnecting conductors, arresters, and other connectors or fittings required to complete the system.

Lighting Protection System

Generic terms for the component parts.

Rods and Points

All conductors, fittings, and fixture for protection not exceeding 23 m in height.

Class I Materials

All conductors, fittings and fixtures for protection exceeding 23 m in height, or one which has a structural steel frame, of any height.

Class II Materials

Steel with a coating of copper to bond it

Copper-Clad Steel

An attachment to secure the conductor to the structure

Fastener

The minimum temperature at which it gives off vapor in sufficient concentration to form an ignitable mixture with air near the surface of the liquid within the vessel.

Flash Point

A spark between nearby metallic objects to lighting protection system or to ground.

Sideflash

Any short air space between two conductors electrically insulated to each other.

Spark Gap