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NEMA Publishes Two Standards in ANSI/NEMA OS Series


4/28/2014 12:30 PM

The National Electrical Manufacturers Association (NEMA) published ANSI/NEMA OS 1-2013 Sheet-Steel Outlet Boxes, Device Boxes, Covers and Box Supports and ANSI/NEMA OS 2-2013 Nonmetallic Outlet Boxes, Device Boxes, Covers and Box Supports.

ANSI/NEMA OS 1-2013 includes standard configurations for metal outlet boxes 100 in³ or less as well as manufacturer specifications for materials, corrosion protection, dimensions of openings, supports, cover screws, markings, and provisions for grounding. OS 1 is the essential industry standard for ensuring compatibility of metal outlet boxes with standardized wiring devices and conduit and cable systems. Additions to the scope and construction requirements for grounding means, ground screw, and ground screw retention can also be found in this edition.

ANSI/NEMA OS 1-2013 may be purchased in electronic or hardcopy format for $154 on the NEMA website.

ANSI/NEMA OS 2-2013 has standard configurations for nonmetallic outlet boxes 100 in³ or less and manufacturer specifications for materials, dimensions of openings, supports, cover screws, markings, and provisions for grounding. OS 2 is the essential industry standard for ensuring compatibility of nonmetallic outlet boxes with standardized wiring devices and conduit and cable systems.

ANSI/NEMA OS 2-2013 may be purchased in electronic or hardcopy format for $97 on the NEMA website.

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 exceeds $100 billion annually.

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