Pulling a 400kV cable is a highly complex and hazardous operation due to its immense size, weight, and the severe consequences of a mistake. The key factors that elevate the challenge are:

• Extreme Weight and Size: 400kV cables are exceptionally heavy, often requiring pulling forces of 10 tons (100 kN) or more. The sheer weight and stiffness of the cable demand equipment with a pulling capacity and control far beyond a standard winch.

• Insulation Integrity: The cable's insulation is incredibly sensitive. Any damage—from excessive tension, an incorrect bending radius, or abrasion—can create a defect that may lead to a catastrophic electrical failure years after installation.

• Safety Zone & Flashover Risk: Working with EHV cables requires strict adherence to safety clearances. The risk of flashover—where electricity arcs through the air—is a serious and fatal concern. All equipment and personnel must remain a specified safe distance from the energized line at all times.