UL 514c-2009 pdf download – Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers.
5.3.4 The nonmetallic products covered by the requirements in Sections 6 – 1 6 and 59 – 87 are considered to be inherently resistant to the corrosive influences of common industrial atmospheres including the vapors and mists of bases, hydrofluoric and chromic acids, and chromic acids, and pickling and plating baths. Resistance to specific reagents is covered in Resistance to Specific Reagents, Section 79 and in 86.3.1 and 86.3.2. 5.3.5 The outlet boxes covered by the requirements in Sections 6 – 1 6 and 59 – 87 have an interior volume of 1 00 cubic inches (1 639 cm 3 ) or less and are intended to provide access to wiring during installation of the wiring. They are also intended to enclose splices, taps, and wiring devices, but not intended for the support of fixtures. From one to four unthreaded conduit-connection sockets are provided integrally with a PVC box, or the box is blank. 5.3.6 The conduit bodies covered by the requirements in Sections 6 – 1 6 and 59 – 87 are pull boxes intended for use with nonmetallic conduit to enclose splices and taps and to support wiring devices not involving the generation of heat – for example, lampholders are not acceptable – mounted on cover plates. Blank covers are to be provided with the bodies. From one to four unthreaded conduit-connections sockets are to be provided integrally with the body. 5.3.7 The flush-device boxes covered by the requirements in Sections 6 – 1 6 and 59 – 87 have an interior volume of 1 00 cubic inches (1 639 cm 3 ) or less. Flush-device boxes made of PVC material are intended for use with nonmetallic conduit for the support of wiring devices not involving the generation of heat – for example, lampholders are not acceptable – with the wiring devices mounted directly in the box rather than on the cover but can also be used as junction and conduit bodies. Flush-device boxes may be provided with blank covers or flush-device cover plates.
5.4 Nonmetallic outlet box covers for use in damp and wet locations 5.4.1 An outlet box cover intended for use in damp or wet locations shall comply with the applicable requirements in Sections 42 – 58 when installed as intended and shall be marked in accordance with 86.4.1 – 86.4.4. Exception No. 1 : An outlet box cover intended for use in a wet location with the cover closed is not required to comply with the requirements in 50.3.1 and 50.3.3. Exception No. 2: An outlet box cover intended for use in a damp location is not required to comply with the requirements in 50.2.1 – 50.3.3. 5.4.1 revised November 1 3, 2002 5.5 Boxes and covers intended for use with electrical nonmetallic tubing 5.5 added January 31 , 2005 5.5.1 The products covered by the requirements in Sections 6 – 41 A and 58A – 58D are boxes and covers intended for use with electrical nonmetallic tubing. 5.5.1 added January 31 , 2005