ADKS roof and gutter de-icing cables help end costly ice damage by preventing ice dam formation and promoting the free flow of water through gutters and downspouts to ground level. This product is for the sole intended use of preventing ice dams from forming on inclined roofs with tab shingles in gutters and in downspouts. This roof de-icing cable is not intended for use as a snow-melting system to clear roof of ice and snow. ADKS cables are rated at 5 watt per foot 120 Vac and have a three wire grounded plug with a 6 foot/ power cord. Roof and gutter de-icing kits include the appropriate number of roof clips and cable spacers. ADKS cables are UL listed to Canadian Safety Standards and CSA Certified.