26208-17 Conductor Terminations & Splices, Module 26206 conductor installations, 26205-20 Pull & Junction Boxes, Midterm

Any ungrounded conductor that enters a raceway, box, or enclosure must be protected from abrasion if it is ________.

#4 AWG or Larger

A shielded cable with an OD of 50mm enters a junction box with an angle pull. Assuming the system operates @ 5,000V, the minimum length of the box is _______?

1,800 mm

Select the list of conductors that begin with the smallest wire and go up?

18 AWG, 14 AWG, 1/0, 3/0.

A 2" raceway runs alongside a 3" raceway in to a junction box with an angled pull. Assuming the system is operates at 600V, the required distance between these two raceways entries is ______.

24"

An MD 53 raceway runs alongside a MD 78 raceway into a junction box with an angled pull. Assuming the system operates @ 600V, the required distance between these two raceways entries is ________?

521 mm

The minimum free conductor length for making connections to wiring devices specified by the NEC is _______?

6" (150 mm).

A shielded cable with an OD of 2" enters a junction box with an angled pull. Assuming the system operates @ 5,000V, the minimum length of the box is _______?

72"

Mandrels should be approximately what percentage of the conduit size?

80%

All of the following maybe used to guide a cable during a pole except

A polygon setup

Which of the following pulling methods should be used when the pulling tension exceeds 1,000 pounds?

A pulling eye

Which of the following inscriptions on a wire connector indicates that it is designed for use on both copper and aluminum wire?

AL-CU

The United States uses which of the following standard systems of wire sizes?

American Wire Gauge.

When installing mechanical connectors, which of the following is used to prevent the formation of surface oxides?

An oxide-inhibiting joint compound

A good electrical connection should ____.

Be mechanically and electrically secure

In two-conductor cable, the undergrounded or hot wire is _______?

Black.

Where is the best place to seek information about a wire pulling lubricant that is compatible with a particular type of cable insulation

Both the cable and lubricant manufacturers

Due to the risk of runaways, what should be used on all long vertical cable pull

Braking system

Before a splice or connection can be made to a Type THHN conductor, the _____.

Conductor ends must be stripped and cleaned

Wire connectors marked only with the wire size should only be used on _____.

Copper conductors

When stripping conductors, be sure to _____.

Cut the insulation so that no frayed pieces or threads extend past the point of cut off

When used in control cable, which of the following must be grounded in order to be effective?

Drain wires

A receptacle in a wet wet location would most likely be installed in a (AN) ______.

FS box

The operating temperature within a fixture is a primary factor in the selection of a _______?

Fixture wire.

A grounding wire may be which of the following?

Green.

Which of the following is the most important consideration when pulling cables in vertical pulls

Guard against runaways

The best electrical tape to use as a pretective overwrap on high-voltage cables is _____.

High temp silicone rubber

How should terminal space be measured from the end of the lug or wire connector?

In a straight line

In addition to being both flame-retardant and moisture-resistant, what characteristic does Type NMC cable have?

It is fungus and corrosion-resistant.

Which of the following is true of shielding in instrumentation circuits?

It is grounded at one end only.

How can you determine the wire size that can be used effectively with an insulated barrel crimp connector?

It is indicated by the color-coding of the insulation on the connector

It is important to do which of the following when conductors are fed into long runs of conduit?

Make sure the wires are straight and do not cross over each other.

A good place to find data for supporting cable in vertical conduit runs is from

Manufactures catalogs manufactures catalogs

Which of the following eliminates the need for taping and the use of filler tape?

Motor connection kit

Where in the NEC will you find the most information on pull and junction boxes?

NEC Article 314

Where can you find the ampacity of conductors for given conditions?

NEC Tables 310.15(B)(16) through 310.15(B)(21).

The NEC section that governs electrical connections and splices is _____.

NEC section 110.14

An enclosure for use in an area subjected to regular washdown is ______.

NEMA Type 4

A pulling line is usually made of _______?

Nylon or other synthetics.

Which of the following is true of drain wires in fire alarm and instrumentation cable?

Only one end is typically grounded

Burnishes, nicks, and scrapes are generally the result of which of the following?

Poorly stripped conductors

Type NMS cable contains _______?

Power, communications, and signaling wiring.

All the following are acceptable methods of transporting or storing cable reels except

Reels should be laid flat on their sides.

To determine the correct connector size for MC cable, _____.

Refer to the manufacturer literature

The abbreviation for an entrance ell (Elbow) is _____.

SLB

To properly install heat-shrink insulators, _____.

Slip the insulator over the connector and apply heat for a few seconds

Heat-shrink insulators are intented to provide _____.

Strain relief and much protection

Which of the following increases the flexibility of a wire?

Stranding.

Which of the following precautions should be taken when making a cable pull in extremely cold weather

The cable should be stored in a warm area overnight

How should the feed in setup be handled during a cable installation

The cable should unreel along its natural curvature.

A true statement concerning solid versus stranded conductors is _____.

The diameters are different

After some length of a conductor has been used from a cable real, what should be done before placing the real in storage?

The end of the conductors should be sealed

Stripped wire should be inserted into the barrel of the crimper until _____.

The insulation butts against the foward stop

Which of the following best describes the location of Sheave supports for pulling cable in cable trays

They should be supported in the opposite direction of the pull

To position cable so that it is not under tension, it is necessary to _____.

Train conductors

An enclosure installed in a dry residential basement would most likely be a NEMA ______.

Type 1

Which enclosure is suitable for use in Class 1 hazardous locations?

Type 7

Which of the following types of cable is suitable for dry locations only

Type NM.

When installing EMT, a standard square box with a cover can be used as an inexpensive alternative to a (an) ______.

Type T conduit body

The cable that is used for service, feeders, and branch circuits is _______?

Types MC.

A Myers hub is best described as a (an) ______.

gasketed fitting

When attaching metal conduit to an enclosure that contains a bonding jumper, the jumper can be connected to a _____.

grounding locknut

A handhole enclosure must be ______?

provided with a cover that weighs over 100 lbs (45kg) or require tools to open.

The first number in the IP classification system designates the degree of protection against _______.

solid objects