General Construction Specifications
PART 1 - GENERAL
01 WORK INCLUDED
A. Wall and ceiling outlet boxes.
B. Pull and junction boxes.
02 REFERENCES
A. ANSI/NEMA OS 1 - Sheet-Steel Outlet Boxes, Device Boxes, Covers and Box Supports.
B. NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).
03 SUBMITTALS
A. Provide shop drawings and product data under applicable Sections of Division 1.
PART 2 - PRODUCTS
04 OUTLET BOXES
A. Cast Boxes: Cast feralloy, deep type, gasketed cover, threaded hubs.
05 PULL AND JUNCTION BOXES
A. Sheet Metal Boxes: ANSI/NEMA OS 1; galvanized steel.
B. Sheet Metal Boxes Larger Than 12 Inches in Any Dimension: Hinged enclosure in accordance with Section 16160.
C. Cast Metal Boxes: NEMA 250; Type 4 and Type 6, flat-flanged, surface-mounted junction box, UL listed as raintight. Galvanized cast iron or cast aluminum box and cover with ground flange, neoprene gasket, and stainless steel cover screws.
D. Cast Metal Boxes for Underground Installations: NEMA 250; Type 4, inside flanged, recessed cover box for flush mounting, UL listed as raintight. Galvanized cast iron box and plain cover with neoprene gasket and stainless steel cover screws.
PART 3 - EXECUTION
06 COORDINATION OF BOX LOCATIONS
A. Provide electrical boxes as shown on Drawings, and as required for splices, taps, wire pulling, connections, and code compliance.
B. Electrical box locations shown on Contract Drawings are approximate unless dimensioned. Verify exact location of floor boxes and outlets in offices and work areas prior to rough-in.
C. Locate and install boxes to allow access. Where installation is inaccessible, coordinate locations and sizes of required access doors with applicable sections of these specifications.
D. Locate and install to maintain headroom and to present a neat appearance.
07 BOX INSTALLATION (Outlet and Backbox)
A. Provide knockout closures for unused openings.
B. Support boxes independently of conduit except for cast boxes that is connected to two rigid metal conduits, both supported within 12 inches of box.
C. Use multiple-gang boxes where more than one device are mounted together; do not use sectional boxes. Provide permanent barriers to separate wiring of different voltage systems. Provide permanent barriers between wall switches controlling circuits on different phases of 480Y/277 volt systems.
D. Coordinate mounting heights and locations of outlets mounted above counters, benches, and backsplashes.
E. Position outlets to locate luminaries as shown on reflected ceiling plans.
F. Align the height of wall-mounted outlet boxes for switches, thermostats, and similar devices.
G. Provide cast outlet boxes for all exposed work.
08 PULL AND JUNCTION BOX INSTALLATION
A. Support pull and junction boxes independent of conduit.
END OF SECTION
