UL PRODUCT CATEGORY

[Outlet Boxes and Fittings] Nonmetallic Outlet Boxes, QCMZ


See General Information for Outlet Boxes and Fittings

410.36(A)300.15300.16(A)300.19(C)(2)300.19(C)(3)314.1314.15314.16(C)(1)314.16(C)(2)314.16(C)(3)314.19314.20314.22314.23(G)314.25(A)314.27(A)(1)314.27(A)(2)314.27(B)314.27(C)314.27(D)314.28(C)314.28314.29314.3314.43404.3(A)404.4(B)404.5404.9(A)404.9(C)406.5(C)406.6(C)406.9(A)406.9(B)(1)406.9(B)(2)406.9(D)406.9(E)410.36(A)422.18525.20(H)545.9(A)545.9(B)550.15(A)550.20(A)550.20(B)551.47(C)551.47(L)552.48(C)552.59(A)552.59(B)645.5(E)(2)725.136(A)725.136(D)725.136(E)760.130(B)(1)760.136(D)760.136(E)760.53(A)(1)300.15300.16(A)300.19(C)(2)300.19(C)(3)314.1314.15314.16(C)(1)314.16(C)(2)314.16(C)(3)314.19314.20314.22314.23(G)314.25(A)314.27(A)(1)314.27(A)(2)314.27(B)314.27(C)314.27(D)314.28(C)314.28314.29314.3314.43404.3(A)404.4(B)404.5404.9(A)404.9(C)406.5(C)406.5(F)(4)406.6(C)406.9(A)406.9(B)(1)406.9(B)(2)406.9(D)406.9(E)410.36(A)422.18525.20(H)545.9(A)545.9(B)550.15(A)550.20(A)550.20(B)551.47(C)551.47(L)552.48(C)552.59(A)552.59(B)645.5(E)(2)725.136(A)725.136(D)725.136(E)760.130(B)(1)760.136(D)760.136(E)760.53(A)(1)

GENERAL

This category covers nonmetallic flush device boxes, conduit bodies, conduit boxes, outlet boxes, outlet box and bar hanger assemblies, outlet box hoods, special-purpose boxes, extension rings, covers, and cover plates for flush-mounted wiring devices, intended for installation in accordance with Article 314 of ANSI/NFPA 70, "National Electrical Code." These products are also intended for installation and use in accordance with the following information.

BOX EXTENDERS

Box extenders are components installed in or on a box that is mounted in a finished structure intended to extend the electrical enclosure up to the new finished surface. The box extender rests on the edge of the existing box (fixed depth) or extends into the box (adjustable depth). The flange of the box extender, if provided, rests on the finished surface.

EXTENSION RINGS

Extension rings are suitable for extending properly secured flush- or surface-mounted boxes. One or more extensions may be used. An extension ring is intended to increase the box depth, volume, or both.

CONDUIT BODIES

Conduit bodies that are provided with a volume marking can enclose splices, taps or devices. Conduit bodies that are not provided with a volume marking are covered under Conduit Fittings (DWTT). Conduit bodies certified for use with specific conduit body covers and conduit body covers certified for use with specific conduit bodies are covered under Conduit Bodies and Covers Certified for Use with Specified Equipment (QCKW).

Conduit bodies that have been investigated for a specific combination of conductors are marked, on the conduit body or on or within the unit container of the conduit body, with the maximum number and maximum size of the conductors for which they are intended. For other conductor sizes and combinations, the total cross-sectional area of the fill should not exceed the cross-sectional area of the conductors specified in the marking. The total cross-sectional area is determined using the following type of conductor:

a) Type THHN or T90 Nylon for a fitting for use with 1/2 or 3/4 (16 or 21) trade size conduit or tubing, and
b) Type XHHW or RW90 XLPE for a fitting for use with 1 - 4 (27 - 103) trade size tubing and for use with 1 - 6 (27 - 155) trade size conduit.

CLAMPS

Boxes may or may not be provided with clamps. When clamps are provided, the carton is marked to indicate the type of wiring system or combination of systems for which they have been tested. The clamps are marked with the following letters or combinations thereof to indicate that they are suitable for use with nonmetallic-sheathed cable "N" or flexible tubing (loom) "T." Clamps suitable for nonmetallic-sheathed cable are also suitable for multiconductor underground feeder and branch circuit cable where used in dry locations unless the box or smallest unit carton is marked "Nonmetallic Sheathed Cable Only." Clamps have been tested for securing only one cable per clamp, except multiple section clamps are considered suitable for securing one cable under each section of the clamp, each cable entering a separate knockout. All clamps are removed before the volume of the box is to be determined.

Boxes intended for use with nonmetallic-sheathed cable or open wiring are suitable for use with cable or wire rated 90°C or less, unless marked for a higher rated wire in degrees centigrade.

SINGLE-GANG BOX

A box nominally 2-1/4 by 4 in. or smaller is intended for one or more nonmetallic-sheathed cables to enter through a single- or multiple-stage knockout opening.

FOR USE WITH RIGID NONMETALLIC CONDUIT

Nonmetallic boxes suitable for use with rigid nonmetallic conduit are provided with a marking on the carton to indicate the intended use, such as "For [Specific Type] Conduit." Such boxes, when so marked on the box or carton and provided with installation instructions, are intended for support by the specified conduit. Such boxes are inherently resistant to atmosphere containing common industrial corrosive agents and will withstand vapors or mists of caustic pickling acids, plating baths, and hydrofluoric and chromic acids. Nonmetallic boxes for use with rigid PVC conduit are suitable for use with wire rated 90°C or less.

Nonmetallic boxes suitable for use with rigid nonmetallic conduit are not intended to support equipment or to accommodate heat producing equipment.

FIXTURE/LUMINAIRE SUPPORT

A nonmetallic box, with or without a bracket or bar hanger, intended for support of a fixture/luminaire weighing 50 lbs or less is marked "FOR FIXTURE/LUMINAIRE SUPPORT" on the carton. A nonmetallic box, with or without a bracket or bar hanger, intended for support of a fixture/luminaire weighing more than 50 lbs. is marked with the weight of the fixture/luminaire to be supported. Nonmetallic boxes and device plaster rings have not been investigated for support of a ceiling fixture/luminaire unless marked for use in ceilings, walls, and with the weight of the product to be supported. Nonmetallic device boxes or nonmetallic device boxes intended to be installed in an existing structure have been investigated for the support of utilization equipment weighing not more than 6 lbs.

CEILING-SUSPENDED-FAN SUPPORT

A box, or a box with a bracket or bar hanger intended for support of a ceiling-suspended (paddle) fan weighing 35 lbs or less is marked "ACCEPTABLE FOR FAN SUPPORT" on the product. A box, or a box with a bracket or bar hanger intended for support of a ceiling-suspended (paddle) fan weighing more than 35 lbs. but not more than 70 lbs. is marked "ACCEPTABLE FOR FAN SUPPORT OF 70 lbs OR LESS" on the product. A box, or a box with a bracket or bar hanger intended for support of a ceiling-suspended (paddle) fan is acceptable for use with a fixture/luminaire when provided with the above fixture/luminaire support markings.

CONCRETE TIGHT

Boxes designated as "concrete tight" may have no means of support other than the concrete and often accommodate covers at top and bottom.

FLOOR BOXES

Floor boxes designed for floor installation as covered in ANSI/NFPA 70, "National Electrical Code" (NEC), are provided with covers and gaskets to exclude surface water and sweeping compounds that might be present in floor-cleaning operations. Covers with gaskets may be shipped separately from the boxes. Both products are provided with installation instructions. Those boxes intended for installation in concrete floors are frequently provided with leveling screws, threaded hubs, or both and are provided with a marking on the carton to identify boxes of this type such as, "Floor Box Cover" or "Floor Box, Concrete Tight" as appropriate. Floor boxes may be provided with wiring devices. Refer to WET AND DAMP LOCATIONS below for clarifying information on the suitability of concrete-tight floor boxes not intended to be exposed to weather that are installed in concrete slabs or masonry.

WET AND DAMP LOCATIONS

Boxes and covers intended for use in wet locations as defined by the NEC are marked "Wet Location." Damp location boxes and covers are intended to be so located or equipped as to prevent water from entering or accumulating in the box and are marked "Damp Location." Boxes with threaded conduit hubs will normally prevent water from entering except for condensation within the box or connected conduit.

Box and device cover combinations, and flush device covers that provide protection from the weather only when the cover is closed, are marked "Wet Location Only When Cover Closed" and may be marked "Damp Location." Outlet box hoods intended for use in damp or wet locations are marked for each location and may be marked "Extra-Duty."

Floor boxes designated as "concrete tight" installed in concrete slabs or masonry are not considered to be in wet locations when the following conditions are met:

1. a vapor barrier is installed between the earth and a concrete slab or masonry (i.e., the concrete slab or masonry is not in direct contact with the earth),
2. the floor box is protected from exposure to weather within a building as defined by the NEC, and
3. the concrete slab or masonry above the vapor barrier is not subject to saturation by water or other liquids.

PRODUCT IDENTITY

One of the following product identities appears on the product:

    Extension Ring

    Flush Device Box

    Outlet Box

    Outlet Box and Cover

Other product identities may be used as shown in the individual certifications.

RELATED PRODUCTS

Outlet box assemblies that include certified outlet boxes and one or more of the following certified parts: wiring device, mud ring, cover plate, wet-location gasket and cover plate, wet-location gasket and outlet box hood, or other factory-assembled parts, are covered under Wiring Assemblies (QQYZ).

ADDITIONAL INFORMATION

For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ).

REQUIREMENTS

The basic standards used to investigate products in this category are ANSI/UL 514C, "Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers," and ANSI/UL 514D, "Cover Plates for Flush-Mounted Wiring Devices."

UL MARK

The UL symbol on the product and the Certification Mark of UL on the smallest unit container in which the product is packaged is the only method provided by UL to identify products manufactured under its Certification and Follow-Up Service. The Certification Mark for these products includes the UL symbol, the words "CERTIFIED" and "SAFETY," the geographic identifier(s), and a file number.

Alternate UL Mark

The UL symbol on the product and the Listing Mark of UL on the smallest unit container in which the product is packaged is the only method provided by UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the word "LISTED," a control number, and one of the following product names: "Outlet Box," "Outlet Box and Cover," "Extension Ring," "Flush Device Box," or other appropriate product name as shown in the individual Listings.

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UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. UL shall not incur any obligation or liability for any loss, expense or damages, including incidental or consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Guide Information.

Cover Plates, NonmetallicExtension RingsFlush Device BoxesOutlet Box and Bar Hanger AssembliesOutlet Box CoversOutlet Box HoodsOutlet Boxes, Nonmetallic
Last Updated on 2015-11-04
QCMZ.GuideInfo QCMZ Active 20151104 20151104

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