UL Bulletin
Published Date: March 18, 2011
Last Revision: November 01, 2018
Scope
008450-000000-0000001 Scope
1 Products covered1 1.1 This standard applies to motor control centers to be used in accordance with the U.S. National Electrical Code, ANSI/NFPA 70, CSA C22.1, Canadian Electrical Code, Part 1, and the Mexican Electrical Installations (Utility), NOM-001-SEDE.
1 1.2 These requirements cover motor control centers for use on circuits having available short-circuit currents not more than 200 000 A rms symmetrical or 200 000 A dc.
1 1.3 This standard applies to single- and three-phase 50 and 60 Hz and dc motor control centers rated not more than 1000 V ac or dc.
1 1.4 Requirements for fire pump controllers are as provided in Annex C, item 11.
Summary of Topics m2748_1_20110318_sum.htmlSubject 2748 (1558, 891, 845, 347, 347A, 67)
Bulletin Dated: March 18, 2011
Summary of Topics
This bulletin announces the availability of the Outline of Investigation for Arcing Fault Mitigation Equipment, Subject 2748.
Back to Standard 845, Edition 5