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Formerly, medium- and Pot Head Beach Short high-voltage cables (from about 2.5 kV and above) were terminated with hand-made “stress cones” composed of multiple layers of insulating tape, semi-conductive tape, and insulating putty. By tapering the layers of tape carefully, the potential gradient from the inside of the cable to free air was reduced so as not to cause electrical breakdown and tracking along the surface of the termination. Current practice for these terminations is to use a pre-molded rubber stress cone, which can be slipped over the cable end and shrunk to fit snugly around the exposed cable insulation. This saves considerable installation labor and reduces the chance of errors.