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ANSI/NEMA OS 2

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ANSI/NEMA OS 2 2013 Edition, January 1, 2013 Nonmetallic Outlet Boxes, Device Boxes, Covers, and Box Supports

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Description / Abstract: This standards publication covers those general-purpose nonmetallic outlet boxes, device boxes, covers, and supports that are widely used by the consumer. These items (covered by UL 514C) are designed to facilitate the pulling of wires, to protect and facilitate wiring splices and taps, to provide a means of mounting and protecting wiring devices, and to provide a connection for nonmetallic sheathed cable, nonmetallic tubing (loom), rigid nonmetallic conduit, and electrical nonmetallic tubing or other approved raceways.

This standard provides useful guidance for design and performance of certain aspects of nonmetallic floor boxes.

Excluded from this standards publication are the following: "conduit bodies" and similar types of boxes; cabinets or cutout boxes; floor boxes; flush device cover plates; boxes, plates, and covers designed for use with surface metal or surface nonmetallic raceway systems only; and boxes larger than 1650 cm³ (100 cu. in.) in volume, except multiple gang device boxes.