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UL 891
UL Standard for Safety Switchboards - Eleventh Edition; Reprint with revisions through and including October 31, 2012
Organization:
UL - UL
Year: 2005
Abstract: Scope and object
This Standard applies to switchboards nominally rated at 600 V or less and intended for use in accordance with the Canadian Electrical Code, Part 1 (CE Code, Part 1), the National Electrical Code (NEC), ANSI/NFPA 70, and the Mexican Standard for Electrical Installations (Utility), NOM-001-SEDE.
In this standard the term switchboard is intended to refer to a dead-front switchboard.
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.
These requirements cover switchboards for use on circuits having available rms symmetrical short-circuit currents of not more than 200 000 A.
This Standard applies to switchboards nominally rated at 600 V or less and intended for use in accordance with the Canadian Electrical Code, Part 1 (CE Code, Part 1), the National Electrical Code (NEC), ANSI/NFPA 70, and the Mexican Standard for Electrical Installations (Utility), NOM-001-SEDE.
In this standard the term switchboard is intended to refer to a dead-front switchboard.
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.
These requirements cover switchboards for use on circuits having available rms symmetrical short-circuit currents of not more than 200 000 A.
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| contributor author | UL - UL | |
| date accessioned | 2017-09-04T17:53:06Z | |
| date available | 2017-09-04T17:53:06Z | |
| date copyright | 07/26/2005 | |
| date issued | 2005 | |
| identifier other | FDSUAFAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/176321 | |
| description abstract | Scope and object This Standard applies to switchboards nominally rated at 600 V or less and intended for use in accordance with the Canadian Electrical Code, Part 1 (CE Code, Part 1), the National Electrical Code (NEC), ANSI/NFPA 70, and the Mexican Standard for Electrical Installations (Utility), NOM-001-SEDE. In this standard the term switchboard is intended to refer to a dead-front switchboard. 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. These requirements cover switchboards for use on circuits having available rms symmetrical short-circuit currents of not more than 200 000 A. | |
| language | English | |
| title | UL 891 | num |
| title | UL Standard for Safety Switchboards - Eleventh Edition; Reprint with revisions through and including October 31, 2012 | en |
| type | standard | |
| page | 226 | |
| status | Active | |
| tree | UL - UL:;2005 | |
| contenttype | fulltext |