UL UL 891:2019

UL 891:2019 PDF Download

Standard EN Sample 1 Sample 2

Standard for Switchboards

SKU111561468 Published by Underwriters Laboratories Inc. UL Publication Date2019-07-19 Pages CountPages180

Standard for Switchboards

1.1 Scope and object

1.1.1 This Standard applies to switchboards nominally rated at 1 000 V or less and intended for use in accordance with the Canadian Electrical Code, Part I (CE Code, Part I), the National Electrical Code (NEC), ANSI/NFPA 70, and the Mexican Standard for Electrical Installations (Utility), NOM-001-SEDE.

1.1.2 In this standard the term switchboard is intended to refer to a dead-front switchboard.

1.1.3 These requirements do not cover the following switchboard types: preset and dimmer control (theater), live front, railway control or electrification; or constructions intended only for receiving motor control center units.

1.1.4 These requirements cover switchboards for use on circuits having available short-circuit currents of not more than 200 000 A.

1.1.5 These requirements do not cover switchboards with short-time current ratings.

Details
Edition12
Language(s)English
File Size3.2 MB
Purchase Right after completing the purchase process, you will immediately get a digital copy of this standard which is: Not Locked Printable Multi-User $ 107.50