Profile: Heat Trace Northern Ltd. specializes in trace heating products. Our products include self regulating heating cables and constant wattage heating cables. The self regulating heating cable consists of a semi-conductive polymeric matrix extruded between two parallel bus-conductors, which serves as the heating element. A polymeric insulator jacket is then extruded over this core, and an optional tinned copper braid, fluoro polymer or thermoplastic over jacket can then be added for additional mechanical or corrosive protection. A current is passed through the cable, and as the temperature of the conductive core increases, so does the electrical resistance. These cables cannot overheat or burn out; even when overlapped upon themselves. The heating cable can be cut to length on-site, and exact lengths can be matched without any complicated design considerations. The installation of these cables require no special skills or tools, and can be carried out efficiently. Heat trace also supplies ancillary components for use with all Heat Trace self regulating cables.