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READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 16: ELECTRICAL]{.underline}

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]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (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]{.underline}**

**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 \[[ ]{.underline}\] 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]{.underline}**

**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]{.underline}**

**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.**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**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).**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

** 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]{.underline}**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**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**