请注意:此版本的所有临时修订版将在您购买时提供。电子标志481范围1。1这些要求包括根据国家电气规范NFPA 70.1.2使用的所有电气标志、艺术形式和轮廓照明，电气标志包括所有电气操作和/或电气照明的标志（无论电压），包括但不限于以下照明方法:白炽灯、荧光灯、高强度放电（HID），放电管包括霓虹管、发光二极管（LED）、骨架霓虹管、冷阴极灯和电致发光。除非另有说明，“标志”一词包括标志、轮廓照明、艺术形式和骨架霓虹管。1.3这些要求涵盖的电子标志还包括但不限于雨篷标志、拖车安装标志、电动或机械动画标志、光伏系统和其他独立电源提供的标志、变更信息标志，包括滚动、翻转、tri- 视图、液晶显示器（LCD）和发光二极管（LED）类型以及其他不需要照明的电动标志。1.4这些要求不包括以下内容:a）在600 V或更低电压下工作的照明时钟；参考家用电子钟标准UL 826或商用时钟参考时间指示和记录设备标准UL 863；b） 出口标志；参考UL 924《应急照明和电力设备标准》；c） 安装在拖车上的标志的拖车；d） 安装灯具，用作轮廓照明；参考灯具标准UL 1598；e） 安装在遮阳篷标志内的灯具；参考灯具标准UL 1598；f） 不使用电力的标志；g） 广告牌照明灯具；参考灯具标准UL 1598；h） 光纤或光纤照明器；i） 国家电气规范NFPA 70中定义的危险（分类）场所使用标志。

Please note: All interim revisions for this edition available at time of your purchase will be included.Electric SignsUL 481 Scope1.1 These requirements cover all electric signs, art forms and outline lighting for use in accordance with the National Electrical Code, NFPA 70.1.2 Electric signs include all signs (regardless of voltage) that are electrically operated and/or electrically illuminated, including but not limited to the following methods of illumination: incandescent, fluorescent, high intensity discharge (HID), electric discharge tubing including neon tubing, light-emitting diode (LED), skeleton neon tubing, cold-cathode lamps, and electroluminescence. Unless otherwise noted the term "sign" includes signs, outline lighting, art forms, and skeleton neon tubing.1.3 Electric signs covered by these requirements also include, but are not limited to, awning signs, trailer-mounted signs, electrically or mechanically animated signs, signs supplied by photovoltaic systems and other independent power sources, changing message signs, including scrolling, flipper, tri-view, liquid crystal display (LCD), and light-emitting diode (LED) type and other electrically operated signs that are not necessarily illuminated.1.4 These requirements do not cover the following:a) Illuminated clocks operating at 600 V or less; refer to the Standard for Household Electric Clocks, UL 826 or for commercial use clocks to the Standard for Time-Indicating and -Recording Appliances, UL 863;b) Exit signs; refer to the Standard for Emergency Lighting and Power Equipment, UL 924;c) The trailer of a trailer mounted sign;d) Luminaires mounted to function as outline lighting; refer to the Standard for Luminaires, UL 1598;e) Luminaires mounted within an Awning Sign; refer to Standard for Luminaires, UL 1598;f) Signs that do not use electricity;g) Luminaires intended for billboard illumination; refer to Standard for Luminaires, UL 1598;h) Fiber optics or Fiber optic Illuminators;i) Signs for use in hazardous (classified) locations as defined in the National Electrical Code, NFPA 70.