Heat pipe cable 30 foot long factory sealed new great sale price will be ready this winter. Temperature control - laying of cables along the straight pipe and valves; in place using application tape and grounding plugs into the electrical outlet. Keeps water flowing at -40. Pipe requires 1/2 ' non-flammable insulation such as fiberglass. With aluminum foil for plastic pipe Tube; its recommended gift before cable installation. The traditional resistance wire produces a fixed amount of heat based on the electrical power line. It comes with a built-in thermostat that turns the flow of electricity on and off based on the temperature. 120 volts. 7 watts per foot. CSA Listed.LGTH ft: 30