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NEMA PRP 1-2014 (R2019) presents conduit-in-casing construction as a technically sound solution to the problem of laying power/communication cables under a surface obstruction (highway, runway, rail bed, river, etc.) without disrupting traffic roadbed, rail bed or riverbed.
Guide for Proper Use of System Smoke Detectorsstandard by National Electrical Manufacturers Association, 2022
White Paper on UN2911 Labeling and Transportation of Lamps Containing Radioactive Substancesstandard by National Electrical Manufacturers Association, 02/28/2020
Glossary of Terms Pertaining to Remote Illumination Systemsstandard by National Electrical Manufacturers Association, 04/01/1999
Best Practices for Operating Fluorescent Lighting Systemsstandard by National Electrical Manufacturers Association, 08/02/2012