1 Scope 1.1 These requirements cover LED equipment that is an integral part of a luminaire or other lighting equipment and which operates in the visible light spectrum between 400 – 700 nm. These requirements also cover the component parts of light emitting diode （LED） equipment， including LED drivers， controllers， arrays， modules， and packages as defined within this standard. 1.2 These lighting products are intended for installation on branch circuits of 600 V nominal or less in accordance with the National Electrical Code （NEC）， ANSI/NFPA 70， and for connection to isolated （non-utility connected） power sources such as generators， batteries， fuel cells， solar cells， and the like. 1.3 LED equipment is utilized in lighting products that comply with the end-product standards listed below. The requirements in this standard are intended to supplement those in other end-product standards. Included are：

　　a） Electric Signs， UL 48， b） Portable Electric Luminaires， UL 153， c） Underwater Luminaires and Submersible Junction Boxes， UL 676， d） Emergency Lighting and Power Equipment， UL 924， e） Stage and Studio Luminaires and Connector Strips， UL 1573， f） Track Lighting Systems， UL 1574， g） Luminaires， UL 1598， h） Direct Plug-In Nightlights， UL 1786， i） Low Voltage Landscape Lighting Systems， UL 1838， j） Self-Ballasted Lamps and Lamp Adapters， UL 1993， k） Luminous Egress Path Marking Systems， UL 1994， and l） Low Voltage Lighting Systems， UL 2108.