Relief Of An Electric Field Via A Cone Structure A taped up stress cone can be made by using insulating tape to make about a how to build a stress cone 3+ inch diameter ball at the end of the semicon jacket, then applying semicon tape to form the cone. the semicon is made into a cone, and not allowed to curve back. Heat shrink cable joint 11kv 3 core xlpe & epr high voltage cable joints duration: 19:14. thorne derrick 2,860,674 views. Stress Cone Application Procedures Using Tape Electric A stress relief cone is made by increasing the how to build a stress cone separation between the shield termination and the conductor cable. precautions must be taken to insure a termination which is free of dirt and foreign matter and insulating compounds and tapes must be applied in a prescribed manner. potheads may also be used with the stress relief cone termination. A stress cone is used when terminating a medium to high voltage cable to prevent insulation failure. without a stress...