1684A sbn0-7629-1000-3 Supplemental Requirements for Extra Heavy Wall Reinforced Thermosetting Resin Conduit ( RTRC)and Fittings was rice ( 7 2n 20988220077818Pm 20 COPYRIGHTED MATERIA NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL was 203988220077p 0 COPYRIGHTED MATERIA NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 23 .2007 - UL1684A Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Supplemental Requirements for Extra Heavy Wall Reinforced Thermosetting Resin Conduit ( RTRC)and Fittings ,UL 1684A First Edition ,Dated September 3 ,2004 Revisions :This Standard contains revisions through and including January 23 ,2007 . Summary of Topics Table 3 .1 has been revised to include new values for the nominal outside diameters of Type XW RTRC .The conduit product marking in 5.2 has also been revised . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML - an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and ...