SECTION 16170 CIRCUIT AND MOTOR DISCONNECTS 1 GENERAL
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Section 16170
SECTION 16170
CIRCUIT AND MOTOR
DISCONNECTS
GENERAL
RELATED DOCUMENTS
Drawings and general provisions
of Contract, including General and Supplementary Conditions and
Division 1 Specification sections, apply to work of this Section.
DESCRIPTION OF WORK
Extent of circuit and motor
disconnect switch work is indicated on drawings and schedules.
Work described in this Section
includes furnishing all labor, materials, equipment, tools and
incidentals required for a complete and operable installation of
disconnect switches and enclosures. All equipment shall be
installed, adjusted, tested and placed in operation in accordance
with these Specifications, the manufacturer's recommendations and
as shown on the Drawings. This section includes individually
mounted switches used for the following:
Equipment disconnects
Motor circuit disconnects
Refer to other Division 16
sections for wires/cables, raceways, and electrical boxes and
fittings work required in connection with circuit and motor
disconnect work; not work of this Section.
QUALITY ASSURANCE
Manufacturers: Firms shall have
sufficient experience in the manufacture of circuit and motor
disconnect switches of types and capacities required, for quality
and successful manufacture of circuit and motor disconnects.
Installer's Qualifications: Firms
shall have sufficient experience to allow for quality and
successful installation of circuit and motor disconnects for use
in this Project.
NFPA-70 Compliance: Comply with
NFPA-70 requirements pertaining to construction and installation
of electrical circuit and motor disconnect devices.
UL Compliance: Comply with
requirements of UL 98, "Enclosed and Dead Front Switches."
Provide circuit and motor disconnect switches which have been UL
listed and labeled.
NEMA Compliance: Comply with applicable requirements of NEMA
Standards Publication Number KS 1, "Enclosed Switches"
and 250 "Enclosures for Electrical Equipment" (1,000
volts maximum).
Listing and Labeling: provide
disconnect switches specified in this Section that are listed and
labeled.
The Terms "Listed" and
"Labeled." As defined in the "National Electrical
Code", Article 100.
Listing and Labeling Agency
Qualifications: A "Nationally Recognized Testing Laboratory"
(NRTL) as defined in OSHA Regulation 1910.7.
SHOP DRAWINGS AND SUBMITTALS
Submittals shall be submitted to
the County/Professional for review and acceptance prior to
construction in accordance with the General Conditions and
specifications Section 01300 "Submittals."
Data: Submit manufacturer's data
on circuit and motor disconnect switches.
A copy of this specification
section, with addendum updates included, and all referenced and
applicable sections, with addendum updates included, with each
paragraph check-marked to indicate specification compliance or
marked to indicate requested deviations from specification
requirements. Check marks shall denote full compliance with a
paragraph as a whole.
If deviations from the
specifications are indicated, and therefore requested by the
Contractor, each deviation shall be underlined and denoted by a
number in the margin to the right of the identified paragraph,
referenced to a detailed written explanation of the reasons for
requesting the deviation.
The County shall be the final
authority for determining acceptability of requested deviations.
The remaining portions of the paragraph not underlined will
signify compliance on the part of the Contractor with the
specifications.
Failure to include a copy of the
marked-up specification sections, along with justification(s) for
any requested deviations to the specification requirements, with
the submittal shall be sufficient cause for rejection of the
entire submittal with no further consideration.
PRODUCTS
GENERAL
All material supplied shall be
one of the products specified in Appendix D "List of Approved
Products" appended to these technical specifications.
ACCEPTABLE MANUFACTURERS
Manufacturer: Subject to compliance with requirements, provide
circuit and motor disconnects of one of the following for each
type of switch (refer to Appendix D "List of Approved
Products."
DISCONNECTS
Disconnects shall be rated for
the maximum available fault current available at the point of
connection. For 600V systems, an additional UL approved lockable,
non-fused, safety type switch utility service disconnect shall be
installed ahead of meter.
Where pump motor disconnect and
starter is not mounted within sight of pump wetwell, where
electrical equipment is mounted within a building or other
enclosure, provide additional NEMA 4X stainless steel 316
non-fused disconnect for each pump within sight of pump location.
Enclosed, Non-fusible Switch: 600
Volts, heavy-duty, single throw safety switch, with lockable
handle. Quantity of poles and ampere rating shall be as required
to meet the application. Also, switches for motor applications
shall be horsepower rated to meet or exceed the connected motor
load. Square D Class 3110, or equal.
Enclosure: As specified or
required to meet environmental conditions of installed location:
Dry Indoor Locations: NEMA 1
Outdoor Locations: NEMA 3R, 316
Stainless Steel
Wet, Damp or corrosive
Locations: NEMA 4X , 316 Stainless Steel
Below Grade Locations: NEMA 4,
316 Stainless Steel
NEC
Class 1 Hazardous Locations: NEMA 7 with applicable Group (A, B,
C, D) rating.
Switches shall have handles
lockable with two padlocks and shall have a dual cover interlock.
Disconnect switches used on
single phase, 3-wire or 3-phase, 4-wire applications shall have a
factory installed neutral assembly.
Disconnect switches shall have a
field installed grounding lug.
FUSES
Enclosed, Fusible Switch: 600
Volts, heavy-duty, and single throw safety switch with lockable
handle and with clips to accommodate specified fuses. Fuse size
shall be per Contract Drawings and/or to match protected equipment
manufacturers recommendation. Quantity of poles and ampere rating
shall be as required to meet the application. Also, switches for
motor applications shall be horsepower rated to meet or exceed the
connected motor load. Square D Class 3110, or equal. Provide
fuses for equipment as required and as recommended by switch
manufacturer, of classes, types, and ratings needed to fulfill
electrical requirements for service indicated.
EXECUTION
INSTALLATION OF CIRCUIT AND MOTOR
DISCONNECT SWITCHES
Install circuit and motor
disconnect devices as indicated complying with manufacturer's
written instructions, applicable requirements of NFPA-70, NEMA and
NECA's "Standard of Installation," and in accordance
with recognized industry practices.
Connect disconnect switches and
components to wiring system and to ground as indicated and
instructed by manufacturer. Tighten electrical connectors and
terminals according to manufacturer's published torque-tightening
values. Where manufacturer's torque values are not indicated, use
those specified in UL 486A and UL 486B.
Coordinate circuit and motor
disconnect device installation work with electrical raceway and
cable work, as necessary for proper interface.
Install disconnect devices for
use with motor driven appliances, and motors and controllers
within sight of controller position unless otherwise indicated.
GROUNDING
Provide equipment grounding
connections, sufficiently tight to assure a permanent and
effective ground, for electrical disconnect switches per the
National Electrical Code (NEC).
FIELD QUALITY CONTROL
Subsequent to completion of
installation of electrical disconnect switches, energize circuitry
and demonstrate capability and compliance with requirements.
Correct malfunction units at project site where possible, then
retest to demonstrate compliance; otherwise remove and replace
with new units and retest.
END
OF SECTION
16170 - 4 of
4
OCU
Master CIP Technical Specifications rev: August, 2012
61303 SECTION 613 ‑ CENTERLINE AND REFERENCE SURVEY MONUMENTS
EPOXY 728 SECTION 728 EPOXY 1 SCOPE 1 MATERIALS
EXECUTIVE OFFICEDIVISION NAME BUREAUDISTRICT OR SECTION NAME PO
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