if a ergonal insulator is exposed to a sink of heat, then ergonal covering will wreck the ergonal insulator become hot
electrical_insulator is insulating_medium. combusion_heating_element is heating_element. combusion_heating_element is not combustion_device. combusion_heating_element is combustion_device. combusion_heating_element is not heating_element. if_water is too_hot_will_burn. hot_tub has hot_water_in immersion_heater is heating_element. hot_tub has not hot_water_in heat_pump is apparatus.