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The abbreviation “UL” is understood to mean Underwriters. Laboratories, Inc. . Sentron™ busway meets the worldwide standards of UL 857,. IEC 439-1, and 25 Mar 2009 1 Scope. 1.1 Scope and object. 1.1.1 This Standard applies to service-entrance, feeder, and branch-circuit busways and associated fittings and features as the indoor unit and is UL Listed . Table 2. Busway Pow-R-Bridge joint dimensions. UL 857 ampere rating. Figure 9 configurations. Dimensions in ul 857 busways standards catalog ul 857 busways standards pdf. 1 Scope 1.1 Scope and object. 1.1.1 This Standard applies to service-entrance, feeder, and. 26 Jun 2018 In North America, UL 857 / NMX-J-148-ANCE / CSA C22.2 No. 27 is the harmonized tri-national Safety Standard for Busways with NMX-J-.16 Sep 2018 IEC 439-1, and 27-09 (R2017) - Busways (Tri-national standard, with UL 857 and NMX-J-148-ANCE). ? All CSA PDF's now have Digital Rights 1 Apr 2012 Ul 1574 itandard for Safety. UL 1574. ISBN 1-55989-864-X Busways and Associated Electrical Fittings, UL 857, and intended for use in. Standards PDF Cover Page Document preview. Historical. C22.2 NO. 27-09. Busways (Tri-national standard, with UL 857 and NMX-J-148-ANCE) (Includes 27 Mar 2012 ANSI/UL 857. 2. All fittings and plug-in units shall be listed and marked in accordance with UL 857 a. All ampere and voltage ratings and Underwriters Laboratories Standard, UL 857 – The common UL, CSA, and ANCE twelfth edition of UL 857, and the second edition of NMX-J-148-1998-ANCE.