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About This Item

 

Full Description

Covers single panelboards or groups of panel units suitable for assembly in the form of single panelboards, including buses, and with or without switches or automatic overload protective devices (fuses or circuit breakers) or both. Specifically excluded are live-front panelboards, panelboards employing cast enclosures for special service conditions, and panelboards designed primarily for residential and light commercial service equipment.
 

Document History

  1. ANSI/NEMA PB 1.1-2023


    General Instructions for Proper Installation, Operation and Maintenance of Panelboards Rated 600 V or Less

    • Most Recent
  2. ANSI/NEMA PB 1.1-2013


    General Instructions for Proper Installation, Operation, and Maintenance of Panelboards Rated 600 Volts or Less

    • Historical Version
  3. ANSI/NEMA PB 1.1-2007

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    General Instructions for Proper Installation, Operation and Maintenance of Panelboards Rated 600 V or Less

    • Historical Version