Pothead

The device consists of a molded plastic housing that attaches to the end of an electrical conduit that carries the underground cables up the utility pole to the crossarm.

Multiple bushing insulators project from the plastic body, each ending at an electrical terminal.

[2] What was once called a pothead is now called a "Class I High-Voltage Cable Termination," which must meet these requirements: Formerly, medium- and 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.

[3] High voltage terminations conforming to IEEE Std 48-1990 and not requiring potting compound are illustrated below:

A three phase electric circuit terminated with a pothead
Crossarms with two three phase electric circuits terminated with potheads