What is self-regulating heat trace cable and how does it work for pipes?

Self-regulating Outpipe cable automatically adjusts its heat output based on the temperature of the pipe surface it is wrapped around — producing more heat when the pipe is cold and less as the pipe warms. This means the cable cannot overheat and is safe for plastic pipe materials. Because output varies with temperature along the cable’s full length, a single SR cable can protect a pipe that passes through varying ambient conditions — from a warm indoor section to a cold exterior section — without any additional controls or zone management.