Cable Pulling Glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 

Anchoring System
Any item or group of items that keeps a cable pulling component in place during the cable pull.

 

Capstan
The hollow cylinder of the cable puller that acts on the pulling rope to generate pulling force.

 

Coefficient of friction
The ratio that compares two amounts of force: (1) the force needed to move an object over a surface and (2) the force holding the object against the surface. This ratio is used to describe how the capstan and the rope work together.

 

Conduit
A metallic or nonmetallic, rigid or nonrigid raceway with a circular cross-section through which cables are pulled. Conduits should not be filled beyond those limitations set out in the National Electical Code or the Canadian Electrical Code.

 

Connector
Any item, such as a wire grip, clevis, swivel, or pulling grip, that connects the rope to the cable.

 

Direct line of pull
The areas next to the pulling rope and along its path; this includes the areas in front of, in back of, and underneath the rope.

 

Fish Tape
A tool for pulling cables inaccessible spaces. A fish tape is a very long metal strip with a hook at the end, which can be used to grab a wire or another fish tape, somewhat like catching fish with a hook on a line.

 

Maximum rated capacity
The amount of pulling tension that any component can safely withstand, rated in kilo-Newtons (kN) or pounds; the maximum rated capacity of every component must meet or exceed the maximum pulling force of the cable puller.

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Newton (N)
A metric unit of force, equivalent to .225 pounds of force. 1 lb equals 4.48N.

 

Omni-directional:
Not directional, having properties at movement equal in all directions.

 

Pipe adapter sheave
Attaches to conduit for pulling or feeding cable

 

Pulling grip
Connects the rope to the cable; consists of a wire mesh basket that slides over the cable and grips the insulation.


 
Pulling force
The amount of pulling tension developed by the cable puller, rated in Newtons (metric) or pounds; a cable puller is usually described by the maximum pulling force that it can develop

 

Resultant force
Any force that is produced when two or more forces act on an object; applies to the sheaves of a cable pulling system

 

Rope ramp
A device that works with a tapered capstan; guides the rope onto the capstan to prevent rope overlap

 

S-Class
Fiberglass reinforcement material made from a higher strength fiber than the standard (E-Class), which gives 40% higher tensile strength, 20% higher modulus, and greater abrasion resistance.

 

Sheave
A pulley that changes the direction of the rope and cable

 

Stored energy
The energy that accumulates in the pulling rope as it stretches, described in Newton-meters (metric) or foot-pounds

 

Support structure
Any stationary object that a cable pulling system component is anchored to, such as a concrete floor (for the floor mount) or an I-beam (for a sheave)

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Tactile feedback
The way the rope feels as it feeds off of the capstan; the feel of the rope provides information about the progress of the pull to the operator

 

Tail
The portion of the rope that the operator applies force to; this is the rope coming off of the capstan, and is not under the tension of the pull

 

Tailing the rope
The operator’s main function; this is the process of applying force to the tail of the pulling rope

 

Tensile Strength
In tensile testing, the ratio of maximum load to original cross-sectional area. Also called ultimate strength.

 

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