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Does a UL Listed electric sign require further inspection in the field?

Posted By Underwriters Laboratories , Saturday, May 01, 1999
Updated: Tuesday, August 28, 2012

Question

Does a UL Listed electric sign require further inspection in the field?

Answer

Large signs do. Electric signs so large that shipment in one carton or fully assembled is impractical may be divided into sections. Each major subassembly bears an "Electric Sign Section” Listing Mark. Sign faces, trim and mounting hardware are not considered major subassemblies. Each sign has suitable installation instructions describing or illustrating the proper assembly, mounting and connection of sign sections. The acceptability of the assembled sections in the field, interconnections between sections and the connections to a branch circuit rests with the local authority having jurisdiction.


About Underwriters Laboratories: Underwriters Laboratories® (UL) is an independent product safety certification organization that has been testing products and writing Standards for Safety for over a century. UL evaluates more than 19,000 types of products, components, materials and systems annually with 20 billion UL Marks appearing on 66,000 manufacturers products each year. UL's worldwide family of companies and network of service providers includes 68 laboratory, testing and certification facilities serving customers in 102 countries. UL is also the only National Certification Body (NCB) for PV in North America and an OSHA-accredited Nationally Recognized Testing Laboratory (NRTL). For more information, visit www.UL.com/newsroom.

Tags:  May-June 1999  UL Question Corner 

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