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NEMA publishes standards for panelboards and switchboards.

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March 7, 2014 - ANSI/NEMA PB 1.1-2013 provides general instructions for proper handling, installation, operation, and maintenance of panelboards, which are used in the distribution of electricity at 600 V or less with 1,600 A mains or less and 1,200 A branch circuits or less. Another standard, ANSI/NEMA PB 2.1-2013, provides general instructions for proper handling, installation, operation, and maintenance of deadfront distribution switchboards rated 600 V or less and 6,000 A or less.

NEMA Publishes Standards for Panelboards and Switchboards


National Electrical Manufacturers Association (NEMA)
1300 N. 17th St., Suite 1847-T
Rosslyn, VA, 22209
USA



Press release date: March 3, 2014

ROSSLYN, Va., —The National Electrical Manufacturers Association (NEMA) published  ANSI/NEMA PB 1.1-2013 General Instructions for Proper Handling, Installation, Operation, and Maintenance of Panelboards Rated 600 Volts or Less and ANSI/NEMA PB 2.1-2013 General Instructions for Proper Handling, Installation, Operation, and Maintenance Deadfront Distribution Switchboards Rated 600 Volts or Less.

ANSI/NEMA PB 1.1-2013 covers single panelboards or groups of panel units suitable for assembly in the form of single panelboards (including buses),  with or without switches or automatic overload protective devices (fuses or circuit breakers), or both. These units are used in the distribution of electricity at 600 volts and less with:

1600 ampere mains or less
1200 ampere branch circuits or less
ANSI/NEMA PB 1.1 may be downloaded at no cost or purchased in hardcopy format on the NEMA website for $40.

ANSI/NEMA PB 2.1 covers floor-mounted deadfront switchboards which consist of an enclosure, molded case, and low-voltage power circuit breakers; fusible or non-fusible switches; instruments; and metering, monitoring, or control equipment with associated interconnections and supporting structures. These units are used in the distribution of electricity at:

600 volts and less
6000 amperes or less
ANSI/NEMA PB 2.1 may be downloaded at no cost or purchased in hardcopy format on the NEMA website for $40.

NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia. Its 400-plus member companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical diagnostic imaging systems. Total U.S. shipments for electroindustry products exceed $100 billion annually.

National Electrical Manufacturers Association
Visit our website at www.nema.org
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