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UL 48 - UL STANDARD FOR SAFETY ELECTRIC SIGNS - FIFTEENTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING OCTOBER 21, 2014 Organization: UL
Date: 2011-09-02
Description:   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.  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.
NEMA EM 1 - EXIT SIGN VISIBILITY TESTING REQUIREMENTS FOR SAFETY AND ENERGY EFFICIENCY Organization: NEMA
Date: 2010-01-01
Description: These requirements apply to exit signs that illuminate an integral legally required legend for installation in accordance with the National Electrical Code (ANSI/NFPA 70) and the Life Safety Code (ANSI/NFPA 101), including exit signs intended for use near the floor.
UL 826 - UL STANDARD FOR SAFETY HOUSEHOLD ELECTRIC CLOCKS - ELEVENTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING AUGUST 9, 2016 Organization: UL
Date: 2007-11-29
Description: These requirements do not cover clocks intended primarily for industrial or commercial installations, clocks that form part of a master clock system, outdoor clocks, time stamps, job card recorders, timers, and similar time-indicating and -recording appliances, nor do they cover illuminated clocks intended for use as portable electric lamps or for other illuminating purposes.
NECA NEIS 501 - STANDARD FOR INSTALLING EXTERIOR LIGHTING SYSTEMS Organization: NECA
Date: 2006-01-01
Description: Regulatory and Other Requirements a) All information in this publication is intended to conform to the National Electrical Code (ANSI/ NFPA 70). It is recommended that all work be performed in accordance with NFPA 70E, Standard for Electrical Safety in the Workplace.

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