UL 845:2021

$139.75

Motor Control Centers

Published By	Publication Date	Number of Pages
UL	2021-06-28	147

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Category: UL

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Description

1 Scope

1 Products covered

1 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.

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