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READ AND REMOVE THIS PAGE BEFORE PLACING
THE SPECIFICATION SECTION IN THE CONTRACT

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DIVISION 16:  ELECTRICAL

SECTION 16138 ‑ CABINETS AND ENCLOSURES

USE:	Furnishing and installing cabinets and enclosures.  

NOTES TO SPECIFIER:

	A.	Options within paragraphs are identified by enclosure in brackets; blank spaces enclosed by brackets [_____] provide for information to be inserted, as appropriate, to individual projects.

	B.	TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES, the specifier must edit (delete, substitute or add to the text).  The remaining paragraphs must be renumbered.

	C.	DELETE FOR FINAL COPY: Notes to the Specifier, located between lines of asterisks; all [brackets], underlining, boldface, and italics, within the paragraphs; and this page.  (Open Reveal Codes [alt F3] to do this accurately.)

	D.	To Edit “(Footer B)”: (Corel 8).  ENTIRE FOOTER SHOULD BE BOLDED.  Click in the footer and delete the “Project Name (ftr B)” text and replace it with the Name of the Project (upper and lower case).  Replace date with current MM/YY (WITHOUT BRACKETS).

	E.	The Guide Specifications are intended to be continuously reviewed and revised.  User’s technical comments are appreciated.  Also, other related or similar specification that are written “from scratch” that could benefit others, or other questions can be sent to NSTC A/E Group, ST 110, or call (303) 987-6868.

DRAWING DATA REQUIRED:

REVISIONS OF THIS SECTION:
CSI format, editorial changes 12/01
Metric: Not Applicable
Technical Update: 11/99

SECTION 16138

CABINETS AND ENCLOSURES

PART 1:  GENERAL

1.1	SUMMARY

	A.	Section Includes:  [Furnishing] [and] [installing] electrical equipment enclosures with hinged covers equipped with catch and lock, and herein referred to as cabinets.

1.2	SUBMITTALS

	A.	General:  Submittals shall be according to [Section 01009 - General Information and Requirements.] [Section 01330 ‑ Submittal Procedures.] [Section 01365 - Certificates of Conformance.]    

	B.	Manufacturer's Literature:  Submit [_____] copies of the manufacturer's technical data for the cabinets and enclosures to be used on this project.

	C.	Shop Drawings:  Submit [     ] copies of shop drawings for the cabinets to be used on this project.  The shop drawings shall indicate dimensions and weight loadings for cabinet and enclosure installations.  Show layout, wall brackets, mountings, and supports where applicable.

1.3	QUALITY ASSURANCE

	A.	Labeling Requirements:  Cabinets and enclosures shall be Underwriters Laboratories, Inc. (UL) listed and labeled.  UL listing and labeling will not be required if it can be shown that cabinets and enclosures meet the requirements of another nationally recognized testing laboratory (NRTL).

PART 2:  PRODUCTS

2.1	MATERIALS

	A.	General:  Cabinets and enclosures shall be constructed of the manufacturer's standard materials, as listed in published product information; types and sizes shall be as indicated or as required for the installation.

	B.	Material:  Cabinets shall be made of code‑gauge sheet steel and all surfaces shall be galvanized.

	C.	Fabrication:  Cabinet boxes shall be square cornered and straight‑sided with all sides folded up from the back and welded together.  Box openings shall have a 3/4‑inch wide (minimum) inside flange for the cabinet front to rest against and attach to.  Boxes with hinged cover for communications or control cabinets may be without flange provided that the cover is fabricated with a 3/4‑inch (minimum) lip folded toward the back of the box to cover the leading edges of the box when the cover is in the closed position.

	D.	Requirements for Grounding Bus:  Cabinet boxes for electrical panelboards shall have an interior, copper, equipment grounding bus.  The ampacity of the grounding bus shall be equal to the service grounding conductor.  The grounding bus shall be brazed or bolted to the box and shall have pressure connection terminals to accommodate grounding conductors entering the box plus a suitable number of terminals for spare circuits. [Where an isolated ground system is specified, provide an additional grounding bus insulated from the cabinet, with the same ampacity as the equipment grounding bus.]

	E.	Cabinet Fronts:  Unless otherwise indicated, shall be a flat, one‑piece frame supporting a hinged door with flush catch and with additional requirements as follows:
		1.	For surface‑mounted cabinets, the front shall be the same size as the box.
		2.	For recessed cabinets, the front shall extend beyond sides of the box by 3/4 inch (minimum).
		3.	The door opening in the frame shall be fabricated with a lip which the door can close against.  The lip shall extend into the door opening 1/4 inch (minimum) on the sides and shall be depressed enough to allow the door surface to be flush with the frame surface in the closed position.
		4.	Fronts for panelboard cabinets shall include a metal frame with clear plastic window and a numbered and lined directory card on the inside surface of the doors.
		5.	Fronts shall be attached to the box by slotted, truss head machine screws or slotted, screw‑activated, captive clamps.  Front fastening screws shall not be more than 24 inches apart nor more than 6 inches from the corners.

	F.	Optional Fronts:  Surface mounted [communication] [and] [control] cabinets may have hinged fronts, with catch and lock, attached directly to the box to serve as the cabinet door.

	G.	Hinges:  Cabinet doors shall be equipped with sturdy hinges spaced not more than 24 inches apart and not more than 6 inches from the ends of the door.  Hinges shall be permanently fastened with round‑headed rivets or spot welds.  Doors may be equipped with continuous piano hinges in lieu of sectional hinges.

	H.	Cabinet Locks:  Cabinets with doors less than 48 inches high shall be equipped with a combination single‑point catch and flat key lock.  Doors greater than 48 inches high shall be equipped with vault handle and three point catch.  Single‑point catch locks in the same system shall be keyed alike and all three‑point catch locks shall be keyed alike.

	I.	Cabinet Finishing:  In addition to galvanizing, cabinet fronts and the outside surfaces of surface‑mounted cabinet boxes including cabinet fronts, shall be factory finished with grey enamel.

PART 3:  EXECUTION

3.1	INSTALLATION

	A.	General:  Install cabinets as indicated, complying with the manufacturer's written instructions, applicable requirements of codes and standards, and according to recognized industry practices.

	B.	Vertical Mounting:  Unless otherwise indicated, install each cabinet with the long axis running vertically.

	C.	Location Adjustments:  Where cabinet locations shown would interfere or cause associated electrical equipment to interfere with architectural, structural or mechanical features, request permission from the Contracting Officer to install the box in a location which eliminates interference but with the smallest deviation from the location shown.

	D.	Knockouts:  Open only knockouts which will be used for a conduit.  Install tight fitting knockout closers in holes from which conduits have been removed.

	E.	Cabinet Supports:  Fasten cabinets securely and independently in place, using appropriate fasteners required in Section 16072 - Supporting Devices.

	F.	Recessed Cabinets:  Install boxes with front flange slightly recessed 1/4 inch (maximum) from adjacent surface so that cabinet front seals tightly against the adjacent surfaces.

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SELECT APPLICABLE MOUNTING HEIGHT.  GENERALLY 72 INCHES WILL BE USED; HOWEVER, 48 INCHES SHALL BE USED WHERE HANDICAPPED ACCESS IS REQUIRED (E.G., TO RESET CIRCUIT BREAKERS IN A RESIDENCE).
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	G.	Mounting Height:  Unless otherwise indicated, mount cabinets so the top is [48] [72] inches above the floor or grade if no floor exists at cabinet location.

	H.	Communication Cabinets:  Install a 3/4‑inch thick plywood backboard in communication cabinets.  Backboard dimensions shall be within 3 inches of box dimensions.

	I.	Cabinet Types:  Unless otherwise indicated, cabinets installed indoors shall be NEMA Type 1 and cabinets installed outdoors shall be NEMA Type 3R as described in NEMA 250.

PART 4:  MEASUREMENT AND PAYMENT
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WHEN A "LUMP SUM" CONTRACT IS USED, DELETE THE TITLE PART 4:  MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SPECIFICATION SECTION.  MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01010.
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4.1	METHOD OF MEASUREMENT

	A.	Units:  The work described in this section will not be measured for payment.

4.2	BASIS OF PAYMENT

	A.	Payment:  No direct payment for the work described under this section will be made.  Consideration for this item shall be included in the bid price for other items of the Contract.

END OF SECTION

CABINETS AND ENCLOSURES
Project Name (ftr B)	[12/01]
16138 -