Installation can be rough on a new electrical cable! A pulling winch can apply a few thousand pounds of tension. Bends in the duct can apply crushing sidewall pressure. Even the pulling eyes can chew through the cable jacket and permanently damage the cable ends. Cable manufacturers have a variety of physical limits for different cable constructions (tension, bending radius limits, end connections, etc).
 

Cable manufacturers limit the pulling force of wire mesh grips to a few hundred pounds for a reason: the wire mesh is gripping on the external plastic jacket of the cable. But you can’t expect the plastic jacket and rubbery insulation to support a structural load!
Typically, cable manufacturers require 10-15 feet of cable be cut away, beyond the end of the wire mesh grip. Why? Because the pulling forces exerted on the outside surface have applied shear forces through the jacket, the insulation and the outer strands of the cable construction – there is no way to ensure that the cable construction has not been damaged or deformed during the pull.
To take advantage of the cable’s maximum pulling tension, you have to get a grip on the conductor itself. The DCD Power-Grip is designed to lock onto the conductor strands and the harder you pull, the tighter your Grip! When you’ve completed your pull, cut away the portion of the cable conductor deformed inside the Power-Grip and that’s it.