electrical job information 2

44問 • 1年前

問題一覧

When determining the variation of resistance of a conductor, the increased value of resistance is ? proportional to the area of the conductor.

inversely

Statistically, the top rung of a ladder is the most dangerous.

False

When attaching smaller gauge wires, such as 3-12 AWG, to a fish tape's leader for a medium-duty pull, the conductors should be ? .

stripped out 3–5", each 1" further than the previous; folded in half through the leader; and taped up for the pull

Application for Type ? conductors include: Residential Indoor (dry location) and outdoor (wet location) installation Rated for direct burial installation

UF-B

Penetrations made in a ? require an L rating with the approved firestop system.

smoke barrier

A tool must be approved for work on ? ; if it is not, do not use it for such.

energized equipment

Masonry drill bits

When cable ties are used to lash cables in cable trays, they shall be ? and identified for the application and for securement and support.

listed

In order to pass the conductor up through the double-locking grip head, the cam's locking ring around the head needs to be in the ? position.

down

Which category of employer must protect workers against permit space hazards by complying with the standard?

Entry employer

Multi-roller sheaves are often referred to as ? hook sheaves.

conveyor

What do mechanical type masonry fasteners use to obtain their holding values?

Friction

When planning a wire pull, it is best to remember to ? .

plan several shorter pulls rather than fewer longer pulls

? are used to aid in wire pulls, and are designed for high breakage strength and minimal stretch. Often, they have a factory-spliced pulling eye at each end. Some common diameters are 1/2 inch, 9/16 inch, 5/8 i

Pulling ropes

? is the typical construction for most single-family homes and garages.

Type V

Structural walls constructed with cold-formed steel use heavier gauge studs. These studs are at least ? and could be as much as ? .

20 gauge / 12 gauge

LL shape conduit body

Fish tapes come in a variety of sizes. Choose the sizes of fish tapes that are available for pulling 14 AWG through 2 AWG. (Choose all that apply.)

1/8,1/4

AC/MC and FMC duplex connector

A ? is not required to have a fire-resistance rating.

smoke partition

Before getting down from a scaffold, you should always check to be sure that materials or tools ? .

are not left in a position from which they might fall if the scaffold is moved

The rubber or vinyl handgrips found on most pliers are designed to protect the users from electrical shock.

False

To break a stuck nut loose, you should use a(n) ? wrench.

box

T shape conduit body

Which type of armored cable is listed under UL 4, which is a prescriptive standard, with permitted conductor sizes of 14 AWG through 1 AWG only?

Which of the following engineered wood products is the least likely to be used on a jobsite?

Particle board

Typical lighter-duty cable pullers utilize a(n) ? motor as the energy source to pull the wire into the raceway.

drill

Receptacle current contacts are typically offered in what two primary designs?

Double-wipe and triple-wipe

When the stranded wire begins to spread apart in the installation process, this is referred to as ? .

splay

When selecting a through penetration system, which of the following questions need to be considered? I. How much will the material cost? II. Is the penetration temporary or permanent? III. What is the annular space of the opening? IV. What is the hourly rating of the assembly? V. What type of fire rated assembly is being penetrated?

III., IV., and V.

What National Electrical Code (NEC) chapter covers the requirements for firestopping?

When testing a through penetration system, UL tests various different manufacturers' products in the assembly. This process allows flexibility for the installer to choose from various manufacturers' products.

false

Which of the following is considered an unsafe condition in the electrical trades?

A metal ladder

Effective emergency planning is vital to ensure that any entrant who becomes sick or is injured in a permit space can be evacuated quickly and safely. ? permit space program must therefore include procedures for entrants to be rescued in a timely manner by qualified personnel.

The entry employer's

Which category of employer must protect workers against permit space hazards by complying with the standard?

Entry employer

Which type of “push around“ type of lift is essentially used as a ladder replacement?

Aerial work platforms

TB shape conduit body

T shape conduit body

When installing aluminum conductors inside a structure, it must be the ? series alloy.

8,000

Type ? cable is defined as a factory assembly of one or more insulated conductors with an integral or an overall covering of non-metallic material suitable for direct burial in the earth.

Which of the following is not a common type of firestop material?

Endothermic tape

The temperature requirement that a four-hour fire-resistive assembly must withstand during the ASTM E 814/UL 1479 is ? .

2,000°F

Data cable is typically ? twisted-pair conductors.

23-24 AWG

Type CMR communication riser cables are permitted to be used in which of the following applications? I. In-wall II. Plenum III. Riser

I. and III.

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11問 • 1年前

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6問 • 1年前

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6問 • 1年前

Marcus Murphy

問題一覧

When determining the variation of resistance of a conductor, the increased value of resistance is ? proportional to the area of the conductor.

inversely

Statistically, the top rung of a ladder is the most dangerous.

False

When attaching smaller gauge wires, such as 3-12 AWG, to a fish tape's leader for a medium-duty pull, the conductors should be ? .

stripped out 3–5", each 1" further than the previous; folded in half through the leader; and taped up for the pull

Application for Type ? conductors include: Residential Indoor (dry location) and outdoor (wet location) installation Rated for direct burial installation

UF-B

Penetrations made in a ? require an L rating with the approved firestop system.

smoke barrier

A tool must be approved for work on ? ; if it is not, do not use it for such.

energized equipment

Masonry drill bits

When cable ties are used to lash cables in cable trays, they shall be ? and identified for the application and for securement and support.

listed

In order to pass the conductor up through the double-locking grip head, the cam's locking ring around the head needs to be in the ? position.

down

Which category of employer must protect workers against permit space hazards by complying with the standard?

Entry employer

Multi-roller sheaves are often referred to as ? hook sheaves.

conveyor

What do mechanical type masonry fasteners use to obtain their holding values?

Friction

When planning a wire pull, it is best to remember to ? .

plan several shorter pulls rather than fewer longer pulls

Pulling ropes

? is the typical construction for most single-family homes and garages.

Type V

Structural walls constructed with cold-formed steel use heavier gauge studs. These studs are at least ? and could be as much as ? .

20 gauge / 12 gauge

LL shape conduit body

Fish tapes come in a variety of sizes. Choose the sizes of fish tapes that are available for pulling 14 AWG through 2 AWG. (Choose all that apply.)

1/8,1/4

AC/MC and FMC duplex connector

A ? is not required to have a fire-resistance rating.

smoke partition

Before getting down from a scaffold, you should always check to be sure that materials or tools ? .

are not left in a position from which they might fall if the scaffold is moved

The rubber or vinyl handgrips found on most pliers are designed to protect the users from electrical shock.

False

To break a stuck nut loose, you should use a(n) ? wrench.

box

T shape conduit body

Which type of armored cable is listed under UL 4, which is a prescriptive standard, with permitted conductor sizes of 14 AWG through 1 AWG only?

Which of the following engineered wood products is the least likely to be used on a jobsite?

Particle board

Typical lighter-duty cable pullers utilize a(n) ? motor as the energy source to pull the wire into the raceway.

drill

Receptacle current contacts are typically offered in what two primary designs?

Double-wipe and triple-wipe

When the stranded wire begins to spread apart in the installation process, this is referred to as ? .

splay

III., IV., and V.

What National Electrical Code (NEC) chapter covers the requirements for firestopping?

false

Which of the following is considered an unsafe condition in the electrical trades?

A metal ladder

The entry employer's

Which category of employer must protect workers against permit space hazards by complying with the standard?

Entry employer

Which type of “push around“ type of lift is essentially used as a ladder replacement?

Aerial work platforms

TB shape conduit body

T shape conduit body

When installing aluminum conductors inside a structure, it must be the ? series alloy.

8,000

Type ? cable is defined as a factory assembly of one or more insulated conductors with an integral or an overall covering of non-metallic material suitable for direct burial in the earth.

Which of the following is not a common type of firestop material?

Endothermic tape

The temperature requirement that a four-hour fire-resistive assembly must withstand during the ASTM E 814/UL 1479 is ? .

2,000°F

Data cable is typically ? twisted-pair conductors.

23-24 AWG

Type CMR communication riser cables are permitted to be used in which of the following applications? I. In-wall II. Plenum III. Riser

I. and III.