An electric heat trace cable is composed of a conductive polymer with two parallel metal wires and an insulating sheathing. It is characterized by a high positive temperature coefficient of conductive polymers, and is connected in parallel with each other, which can automatically adjust the output power with the temperature change of the heating system, automatically limit the heating temperature, can be arbitrarily truncated or used for a long time within a certain range, and allow multiple cross-overlaps without the worry of high temperature hot spots and burnout.
