UL SUBJECT 2049-2006 住宅用管道加热电缆的调查纲要(版本号4)

标准号：UL SUBJECT 2049-2006
中文标准名称：住宅用管道加热电缆的调查纲要(版本号4)
英文标准名称：Outline of Investigation for Residential Pipe Heating Cable Issue Number: 4
标准类型：K13
发布日期：2006/6/21 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：K13
适用范围：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.