NCCER Electrical Level 2 Conductor Installations

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

Braking system

Mandrels should be approximately what percentage of the conduit size?

80%

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

Manufactures catalogs

A device used in cable pulls to facilitate connecting the pulling rope to the cable grip.

Clevises

The feed-in set up should unreal big cable

Along it's natural curvature

When conductors in vertical raceways must be supported, one cable support shall be provided

At the top or as close to the top of the raceway as practical

Which of the following determines the amount of force applied to a pull?

The number of wraps on the puller drum (capstan)

The first step in all cable pull is to

Measure runs and establish communication between both ends of the pull

The substance used to reduce the friction inside a raceway during a pull is

Wire-pulling lubricant

Long lengths of cable can be pulled using

Cable grips

The ends of 1,000 kcmil conductors can be trimmed using

Cable cutters

The three types of fish tape are steel, nylon, and

Fiberglass

The ideal device for lifting and transporting cable reels is a

Forklift

When pulling cables with a capstan, what is the maximum pulling speed that should be utilized?

40 feet per minute

Which of the following devices is designed to read pulling forces during a cable pull

Dynamometer

The most important tool for supervising a high-forced cable pull is

Working communications equipment

Which of the following is one of the most common types of wire-pulling rope on the market today?

Nylon

What is the total pulling tension when pulling a cable weighing 5 pounds per foot through a 500' conduit with a coefficient of friction of 0.35?

875

The maximum pull on cables pulled through cable trays using a basket grip not attached to the conductor is

1,000 pounds

One end of the pulling rope is attached to a cable grip; the other end is

Wrapped around the capstan

Before starting a cable pull, make sure that

All communication equipment is in working order

In general, the maximum sidewall load on any raceway run should be

500 pounds/ foot of bend

The preferred method for checking for damage conduit before pulling cable is

performing a test pull

What is the maximum length of cable weighing 5 lbs / ft that can be pulled through a 45-degree bend with a coefficient of friction of 1.48 using equipment with a maximum pulling force of 2000 pounds?

270

A typical hand-crank wire puller, using 30 pounds of force, can pull up to ___ pounds

1,500

Who is allowed to stop the pull at the first sign of danger to the cable, raceway system, or personnel?

Anyone involved in the pull

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

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

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

A pulling eye

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

Reels should be laid flat on their sides.

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

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

A polygon setup

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

Guard against runaways

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

A flexible steel mesh grip that is used on the ends of cable and conductors for attaching the pulling rope. The more force exerted on the pull, the tighter the grip wraps around the cable.

basket grip

A device used to secure ends of cables to a pulling rope during cable pulls.

cable grip

The turning drum of the cable puller on which the rope is wrapped and pulled. An increase in the number of wraps increases the pulling force of the cable puller.

capstan

The act of providing support in vertical conduit runs to support the cables or conductors.

conductor support

A cylinder of foam rubber that fits inside the conduit and is then propelled by compressed air or vacuumed through the conduit run to pull a line, rope, or measuring tape.

conduit piston

Light cord used in conjunction with vacuum/blower power fishing systems that attaches to the conduit piston to be pushed or pulled through the conduit.

fish line

A flat iron wire or fiber cord used to pull conductors or a pulling rope through conduit.

fish tape

A cable grip, usually with built-in clevis, in which the cable ends are inserted in holes and secured with one or more setscrews.

setscrew grip

A pulley-like device used in cable pulls in both conduit and cable tray systems.

sheave

slang for wire-pulling lubricant

soap

The pulling force required to break a rope, wire, or structural beam.

Tensile Strength