Let's start by asking the important questions about self-regulating and constant wattage cable - what is the difference between the two types of cable and is one more effective than the other? An electric heating cable is a wire cable that produces heat, also referred to as heat trace cable. Heating cable can be used in a wide range of applications for the home, such as floor heating, heat loss replacement, pipe freeze protection, roof and gutter deicing, and snow melting. There are two different kinds of cables, self-regulating and constant wattage, and both can serve the same purpose, although the application will typically determine the best solution for the job. - See more at: http://www.warmlyyours.com/en-US/posts/tech-tips--Self-Regulating-vs-Constant-Wattage-Heating-Cables-525#sthash.8Q8eHWET.dpuf