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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 16441 ‑ DISCONNECT SWITCHES

USE: Furnishing and installing safety switches.

**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:** Location and detail drawings as needed.

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 12/01

Metric:

Technical Update: 2/97

**SECTION 16441**

**DISCONNECT SWITCHES**

**[PART 1: GENERAL]{.underline}**

**1.1 SUMMARY**

** A. Section Includes: \[Furnishing\] \[and\] \[installing\]
\[fusible\] \[and\] \[nonfusible\], \[single throw\] \[and\] \[double
throw\], multi‑pole, safety switches.**

**1.2 SUBMITTALS**

** A. General: Submittals shall be according to \[Section 01009 -
General Information and Requirements\] \[Section 01300 ‑ Submittals.\]
\[Section 01365 - Certificates of Conformance.\]**

** B. Manufacturer\'s Literature: Submit \[[ ]{.underline}\] copies of
the manufacturer\'s technical data for the disconnect switches to be
used on this project.**

** C. Shop Drawings: Submit \[[ ]{.underline}\] copies of shop drawings
for the disconnect switches to be used on this project. The shop
drawings shall indicate dimensions and weight loadings for disconnect
switch installations. Show layout, wall brackets, mountings, and
supports where applicable.**

**1.3 QUALITY ASSURANCE**

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

**[PART 2: PRODUCTS]{.underline}**

**2.1 MATERIALS**

** A. General: Disconnect switches 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. Operating Mechanisms: Unless otherwise indicated, switch mechanism
shall be nonteasible, quick‑make, quick‑break. Current carrying parts
shall be copper and capable of carrying rated current with minimal
heating.**

** C. Ratings: Unless otherwise indicated, switches shall be horsepower
rated, type \[HD (heavy duty)\] \[GD (general duty)\] as defined in NEMA
KS 1 with current and voltage ratings and number of poles as indicated
on the drawings.**

** D. Enclosure: Unless otherwise indicated or required by the NEC,
enclosures shall be NEMA Type 1 for indoor locations and NEMA Type 3R
for outdoor locations, as described in NEMA 250.**

** E. Neutral and Grounding Terminals: Enclosure shall be equipped with
a neutral terminal insulated from the enclosure and a grounding terminal
with metal‑to‑metal contact with the enclosure.**

** F. Operating Handle: Enclosure shall be permanently marked so that
the handle position indicates whether the switch mechanism is \"On\" or
\"Off\" and the handle shall be padlockable in the \"Off\" position.**

** G. Enclosure Door: Shall be equipped with hinges and spring latch.
Door shall be interlocked with switch mechanism to prevent casual
opening when the switch is \"On\". Interlock shall include a concealed
defeat mechanism.**

** H. Fuseholders: Unless otherwise indicated, fuseholders shall be
reinforced, positive pressure type, designed to reject fuses which are
not according to Section 16412 ‑ Fuses.**

** I. Double Throw Switches Rated Over 200 Amps: Shall have quick break
operating mechanism but may have a slow‑make mechanism.**

**[PART 3: EXECUTION]{.underline}**

**3.1 INSTALLATION**

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

** B. Mounting Height: Unless otherwise indicated, install switches so
that the top of the enclosure is 60 inches above the floor.**

** C. Terminal Connections: Torque conductor terminal connections
according to standard industry practice.**

** D. Fuses: In fuseholders, install fuses of the type required in
Section 16412 ‑ Fuses and with current rating indicated on the drawings.
When current ratings are not indicated, select fuses with current
ratings according to the NEC.**

** E. Nameplates: Install a nameplate according to Section 16075 ‑
Electrical Identification, on each safety switch whose load is not
readily traceable to the switch. On double throw switches install
nameplates identifying power sources and loads.**

**[PART 4: MEASUREMENT AND PAYMENT]{.underline}**

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**WHEN A \"LUMP SUM\" CONTRACT IS USED, DELETE THE TITLE PART 4:
MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.
MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01010
-SUMMARY OF WORK.**

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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**