Electric heaters for industrial and commercial use, namely, drum and tote heaters, drum and tote blanket heaters and thermal insulation blankets, heating systems for silos, hoppers and tanks, high aspect ratio heating systems for silos and hoppers, heat trace cables to prevent freezing of pipes, valve and manifold heating units, heating systems to prevent freezing of fire extinguishing sprinklers, industrial process pre-heating and heating systems, electric heating blankets and electric heating belts for propane, LPG and other gas tanks, bottles, containers and vessels needing induced evaporation from within, industrial heating installations, industrial heating furnaces and ovens, heating units for industrial purposes, heating installations for fluids, pastes, solids, powders and granular materials, heating pads other than for medical purposes, electrically heated blankets not for medical purposes, electrically heated belts for strapping around the outside of drums, totes and tanks, electric heaters for commercial, industrial and common use, and electric heating cables; Electric heaters for household use, namely, heat trace cables for pipes to prevent freezing of household pipes, heating systems to protect household fire extinguishing sprinklers from freezing, electric heating blankets and electric heating belts for household propane, LPG and other gas tanks, bottles, containers and vessels needing induced evaporation from within, portable electric heaters, electric heating pads, other than for medical purposes, electrically heated blankets not for medical purposes