Cable-Pulling Equipment Remains Basic & Simple
The technology for cable pulling has remained stable for decades, according to manufacturers. Randy Minor, senior product manager at the Wiring Device-Kellems Division, says. “Grips are simple products that don’t lend themselves to major changes.” Terry Buono, co-owner of cabling installer Cable Systems Inc. (North Haven. CT), agrees. He has purchased his cable-pulling equipment from the same vendor for years. “If the method works, why switch?” he asks.
With all the changes occurring in the telecommunications and data communications markets, it is reassuring that contractors can find stability somewhere. However, some improvements in cable-pulling products are inevitable. For example, changes in product lines include the introduction of smaller pulling grips used to pull optical-fiber cables, and grips that are made of noncorrosive materials for use in harsh environments.
Cable-pulling assemblies are designed to make the task of running cable easier and simpler. They support copper, aluminum, and fiber, solid or bare–in large or small cables that can be used either inside or outside the plant, depending on the application.
Pulling Grips / Wire Mesh Grips
Pulling grips help contractors pull, install or remove cables in conduit, ducts, or sheaves and aid immensely in overhead and underground cable/conductor laying operations. Installers use the devices to eliminate the chance of snagging. Pulling grips also reduce the arc of a bend, the potential for kinking, and the strain on conductors inside the cable.
Support grips are used to hold up or support the weight of stationary or flexible cables in vertical or sloping runs. They can also absorb strain or shock caused by vibration, expansion, or contraction, and they distribute a load of a run evenly over the length of the cable being supported. For example, a contractor might place a support grip every 50 feet to take the slack out of a cable run. Support grips also support connectors for termination.
Strain relief grips/ Cord Grips
Strain-relief grips are used to prebend cable at turns or to pull out electrical cords that have been over-flexed. They can support the conduit entering an enclosure, helping to keep it water-tight; the grips also support motors and other equipment. They help absorb vibration and control the arc of bend in a cable pull.
