Self Regulating Heating Cable, Mounting Location Wet or Dry, Cable Length 24 ft., Max. Circuit Length 250 ft., Voltage 120144 Watts On Metal, 192 Watts On PlasticFeatures Easy to Install, For Use With Short Pipes, Water Pipe System, Plastic or Metal Pipe Up to 2 1/2 In. Dia., Standards UL Listed and CSA Certified RestrictionsNote: For lengths longer than 100 ft., see wet-or-dry-location cut-to-length self-regulating heating cables, this page. WARNING: To minimize the danger of fire if the heating cable is damaged or improperly installed, use a Ground-Fault-Protection Device (GFPD). 120VAC Preassembled Roof/Gutter De-Icing or Pipe Heating CablesReliable, self-regulating heating cables require no assembly or thermostat. 6W-per-ft. waterproof heaters come complete with 30" SJTW leads and grounded plugs. Lay heating cable in gutters using downspout hanger clip 5JC41 to transition into downspout, and attach heating cable to roof edge using roof clip 5JC37 or 5JC39, this page. Can also be used for water pipe systems and short pipes (plastic or metal) up to 2-1/2" dia.UL Listed and CSA Certified.