UL 1574 BULLETIN-2008《轨道照明系统UL安全性标准》

1.1 These requirements cover track lighting systems intended for permanent connection to sources of supply in commercial or residential ordinary locations in accordance with the National Electrical Code, NFPA 70. The track lighting systems covered by this standard are rated: a) 300 volts or less; b) 150 volts or less to ground; and c) 50 amperes or less. 1.2 Lighting track is intended to be permanently installed and permanently connected to a branch circuit not exceeding 277 volts, nominal to ground, and 50 amperes. 1.3 These requirements cover: a) Track networks consisting of track and connectors; b) Mono-, duo-, and multi-point canopies; c) Incandescent, fluorescent, and High Intensity Discharge (HID) luminaire assemblies intended to be electrically connected to and physically supported by the track in track networks and canopies; d) Mounting means for the track; and e) Accessories. 1.4 These requirements do not cover: a) Busways intended for lighting, receptacles, or other general-p