These self-regulating heating cables provide convenient, reliable freeze protection for a wide variety of professionally installed residential and commercial water-pipe and roof-and-gutter de-icing applications. Use waterproof jacket in installations where the cable is likely to be exposed to moisture (i.e., roof installations, inside drain lines). H600 Series cables are cut to length and are available in 50' and bulk roll sizes. Complete design guidelines, installation instructions, and safety information are provided in the H900 Power Connection Kit and the H908 Plug-In Power Connection Kit.