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.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 cm? (100 cu. in.) in volume@ except multiple gang device boxes.?
OS 2-2008由NEMA - National Electrical Manufacturers Association 发布于 2008-01-01,并于 2010-11-11 实施。
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