標準號：UL SUBJECT 2049-2006
中文標準名稱：住宅用管道加熱電纜的調查綱要(版本號4)
英文標準名稱：Outline of Investigation for Residential Pipe Heating Cable Issue Number: 4
標準類型：K13
發布日期：2006/6/21 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：K13
適用范圍：1.1 This outline covers residential pipe heating cable intended to reduce the likelihood of water freezing in exposed pipes of residences. These devices are considered appliances in accordance with Article 422 of the National Electrical Code, NFPA 70.1.2 Cable units employing different heating conductors, insulation, or other forms of construction may be examined and tested in accordance with the intent of this outline, and if found to be substantially equivalent, may be covered.1.3 Residential pipe heating cables may be installed on metal or rigid plastic pipes. Plastic pipes areconsidered to have a maximum long-term thermal exposure limit of 50°C absolute.1.4 These heating cables are limited to applications where they are not exposed to weather unlessadditionally evaluated for outdoor use.