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16050-12
BASIC MATERIALS AND METHODS

as manufactured by 3M Co. (pre- insulated "Scotch-Lock") or Ideal ("Wing-

Nuts").

3. For splices and taps, No. 8 and larger, use solderless "Split Bolt" type connector
as manufactured by Anderson, Burndy, Kearney, Thomas & Betts, or
equivalent.

4. Use cast connections, Cadweld or Thermoweld, for ground conductors.

5. Make all splices and connections in accessible boxes and cabinets only.

6. Cover uninsulated splices, joints and free ends of conductor with rubber and
friction tape or PVC electrical tape. Plastic insulating caps may serve as
insulation.

7. Where feeder conductors pass through junction and pull boxes, bind and lace
conductors of each feeder together. For parallel sets of conductors, match
lengths of conductors as near equal as possible.

8. Branch circuit conductors installed in panelboards, and control conductors
installed in control cabinets and panels shall be neatly bound together using
"Ty-Raps" or equivalent.

9. Underground Splicing
a. This work will require that all splices be tested and also provide the splices

with a compression connector on the conductor. Insulate and waterproof
using one of the following methods which are suitable for continuous
submersion in water:

b. Provide cast-type splice insulation by means of molded casting process
employing a thermosetting epoxy resin insulation in a packaged form ready
for convenient mixing without removing from the package.

c. Gravity poured method shall employ materials and equipment contained in
an approved commercial splicing kit which includes a mold suitable for the
cables to be spliced when the mold is in place around the joined conductors,
prepare the resin mix and pour into the mold.

d. Provide heavywalled heat shrinkable splice insulation by means of a
thermoplastic adhesive sealant material which shall be applied by a clean
burning propane gas torch.

e. Provide a cold-shrink rubber splice which consists of EPDM rubber tube
which has been factory stretched onto a spiraled core which is removed
during splice installation. The installation shall not require heat or flame, or
any additional materials such as coverings or adhesives. It shall be designed
to be used with in-line compression type connectors, indoor, outdoor,
direct-burial or submerged locations.

O. Installation of Ceiling Hung Devices

1. Lighting fixtures, detectors, etc., in Mechanical Equipment, Boiler and Pump
Rooms shall be installed with exposed conduit after equipment, ductwork,
piping, etc., are in place.

P. Grouping of Conductors

1. Contractor may group certain wiring with the approval of the Engineer, as
follows.

a. Power 120V may be grouped with power 120V
b. Control 120V may be grouped with control 120V
c. Control 24V may be grouped with control 24V

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16050-13
BASIC MATERIALS AND METHODS

d. Instrumentation may be grouped with instrumentation

e. Specialty wiring may be grouped with like systems

f. Power wiring at 480V shall not be grouped

g. Fire alarm system wiring shall not be grouped with other systems

The installation shall be installed in accordance with all requirements of the
NEC (including wire ampacity derating factors), manufacturer's requirements,
and the Engineer. Excessive grouping which interferes with functionality and
reliability will not be allowed. The wiring configuration as shown on the
drawings is the baseline requirement for the work.

Q. Junction and Pull Boxes

1.

Install junction and pull boxes in readily accessible locations. Access to boxes
shall not be blocked by equipment, piping, ducts and the like. Provide all
necessary junction or pull boxes required due to field conditions and as required
by the National Electrical Code, Article 314.

R. Equipment Mounting Heights

1.

Unless otherwise noted, mount devices and equipment at heights measured
from finished floor to device/equipment base as follows: (Device base to be set
at CMU joint unless otherwise noted. The Contractor shall verify all
dimensions noted with the Engineer for final approval prior to performing or
installing any of this work.)

a. Toggle switches (up position "on") 48"
b. Receptacle outlets (long dimension vertical,
ground pole nearest floor) 16"
c. Receptacle outlets, above baseboard heaters 30" min.
d. Branch circuit panelboards, to top of backbox 72"
e. Distribution panelboards, to top of backbox 72"
f. Terminal cabinets, control cabinets, annunciator panels,
to top of backbox 72"
g. Disconnect switches, motor starters, enclosed circuit breakers,
to top of box 60"

Where structural or other interferences prevent compliance with mounting
heights listed above, consult Engineer for review to change location before
installation.

S. Hangers and Supports

1.

Provide steel angles, channels and other materials necessary for the proper
support and erection of motor starters, distribution panelboards, large
disconnect switches, pendant-mounted lighting fixtures, etc.

Panelboards, cabinets, large pull boxes, cable support boxes and starters shall
be secured to ceiling and floor slab and not supported from conduits. Small
panelboards, etc., as approved by Engineer, may be supported on walls. Racks
for support of conduit and heavy electrical equipment shall be secured to
building construction by substantial structural supports with PVC end caps as
noted above.

All vertical supports for stanchion mount structures and control stations shall
be 4" angle channel.

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16050-14
BASIC MATERIALS AND METHODS

4. Provide PVC end caps for all protruding angles, channels, struts, etc. for
personal safety for the entire project installation.
T. Identification of Conduit Systems
1. Provide lamacoid nameplates to mark intrinsically safe conduit systems for all
applicable conduit systems for project.

3.2 TESTS
A. For testing requirements, refer to Section 16950.
B.

END OF SECTION

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2. A progress report. The report shall include, for each monthly reporting period, a
description of the work accomplished, problems experienced, upcoming work, any extra
work carried out, and a schedule showing actual expenditures billed for the period,
cumulative total expenditures billed and paid to date under the contract, and a comparison
of cumulative total expenditures billed and paid to the approved budget.

The City of Nashua will pay for work satisfactorily completed by Professional Contractor. The
City of Nashua will pay Professional Contractor within 30 days of approval by the City of Nashua
of the submitted invoice forms and progress reports. The City of Nashua will make no payments
until the invoice forms and progress reports have been submitted and approved.

5. EFFECTIVE DATE OF CONTRACT. This contract shall not become effective until executed by
the City of Nashua.

6. NOTICES. All notices, requests, or approvals required or permitted to be given under this
contract shall be in writing, shall be sent by hand delivery, overnight carrier, or by United States
mail, postage prepaid, and registered or certified, and shall be addressed to:

CITY OF NASHUA REPRESENTATIVE: PROFESSIONAL CONTRACTOR REP:

Tim Cummings Nate Doty

City of Nashua The Doty Group
229 Main St 26 Plain Rd
Nashua, NH 03060 Hollis, NH 03049

Any notice required or permitted under this contract, if sent by United States mail, shall be deemed
to be given to and received by the addressee thereof on the third business day after being deposited
in the mail. The City of Nashua or Professional Contractor may change the address or
representative by giving written notice to the other party.

IN WITNESS WHEREOF, the parties hereto have caused this contract to be signed and intend to be
legally bound thereby.

City of Nashua, NH (signature) a [AL
|
al

Tim Cummings Dir. Economic Dev. \) Ata or . Viceore se Eas
(Printed Name and Title) (Printed Name and Witte) '
(Date) (Date) 4 " Ve

AG 3 of 4

16500-1

SECTION 16500

LIGHTING

PART 1 - GENERAL

1.1

1.2

1.3

DESCRIPTION

A.

Provide complete interior and exterior lighting systems, including fixtures,
standards, poles, hangers, supports, fittings, lamps, wiring, connections and controls,
as indicated in the Contract Documents.

The lighting layouts on the DRAWINGS are diagrammatic only. Lighting fixtures,
in general, have been specified for the particular type of ceiling in which they are to
be installed. Refer to Architectural "Reflected Ceiling Plans" for exact location of
recessed interior fixtures. Verify the ceiling construction details and provide fixtures
and mounting hardware suitable for the respective ceiling types.

Manufacturer's lighting fixture catalog numbers as indicated on the "Lighting
Fixture Schedule" indicate quality, type, efficiency and style but may not cover
special, required design details. Provide lighting fixtures having such special details
as noted in the "Lighting Fixture Schedule" and as required for proper installation.
Verify the availability of all fixtures proposed to be used in the execution of the
work prior to submitting same for the Engineer's review. The discontinuance of
production of any fixture after such review shall not relieve the Contractor from
furnishing an alternate fixture of equivalent quality and design without additional
cost to the Owner.

QUALITY ASSURANCE

A.

B.

All fixtures shall be new and shall bear the U_L. label for the service and location
intended.

Lighting fixtures shall be standard products of manufacturer regularly engaged in
the manufacture of the specific type lighting fixture specified as one of their
principal products and shall be the manufacturer's latest standard design that
complies with the specification requirements.

Lighting fixtures shall be as specified in the "Lighting Fixture Schedule" as shown
on the contract drawings. Although only one manufacturer has been named, the
phrase "or equal" may be applied to each fixture listed, unless otherwise noted. The
lighting design is intended to be of the highest electrical efficiency and fixtures have
been selected to provide the best illumination, at the lowest life cycle cost. The
Engineer reserves the right to disapprove any lamp or fixture type submitted which
is, in the Engineer's opinion, not equal in quality, appearance, efficiency or
performance to the fixture specified.

SUBMITTALS TO THE ENGINEER

A.

Shop Drawings are required for all items provided under this section. Submittals
shall be provided in accordance with Sections 01340, 16010 and as specified in this
section.

All lighting fixture types shall be submitted in a single complete brochure which
shall be in the form of a hard cover binder with each fixture separated by an

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16500-2
LIGHTING

identified index tab. Catalog cut sheets shall indicate fixture identification, i.e., type
A, D, J, etc., and shall indicate where it will be used.
Information on each fixture shall include:

1.
2.
3.

4
5
6.
7.
8
9.
1

Manufacturer and Catalog Number

Dimensioned Construction Drawing(s)

Standard Catalog "Cut" Sheet modified to show any options/accessories to be
provided

Photometrics of each fixture

Lens/Louver Type for each fixture

Power Requirements

Ballast Type, Quantity and Rating

Socket Type/Position

Lamp Type , Quantity and specifications

0. Mounting Type and details of mounting equipment

1.4 DELIVERY, STORAGE AND HANDLING
A. Refer to Specification 16010 "Electrical - General" for this requirement.

PART 2 - PRODUCT

2.1 MATERIALS

Fixtures shall be identical in construction features, options and appearance to the
fixtures specified in the Lighting Fixture Schedule as shown on the contract
drawings. All fixtures shall be able to be pendant mounted.

A.

Lamps

1. Incandescent lamps shall be inside frosted, rated for 130 volt operation.

2. Fluorescent lamps shall be rapid start, F32T8/TL835, mid white (3500K, CRI
80+), unless otherwise noted.

3. Metal halide lamps shall be phosphor coated and suitable for the burning
position dictated by the luminaire.

4. High pressure sodium lamps shall be phosphor coated and suitable for the
burning position dictated by the luminaire.

5. Acceptable Lamp Manufacturers: General Electric, Osram/Sylvania, Phillips

or approved equal.

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16500-3
LIGHTING

Ballasts

1.

Ballasts shall be designed for continuous operation within the fixture provided
and utilizing the lamp(s) specified without overheating or any other detrimental
affects.

Ballasts shall be quiet in operation and of the lowest noise level generally
available. Fixtures shall suppress ballast noise. Ballasts considered by the
Engineer to have objectionable hum or noise shall be replaced immediately at
no additional cost.

Fluorescent Ballasts shall conform to U. L. and ANSI specifications and shall
display symbols of approval by the U. L. and of certification by the C.B.M. as
tested by the E.T.L.

The component parts of the ballast shall be designed, fabricated, and assembled
in accordance with the latest NEMA requirements. Ballasts shall be marked
"Class P" indicating approved integral ballast protection. Fluorescent ballasts
not "P" rated shall be individually fused at the ballast; fuses shall be cartridge
type, sized as recommended by the ballast manufacturer.

Ballasts shall be Electronic, high-power-factor, series-sequence type, with less
than 20% THD.

Fixtures with two lamps or multiples of two lamps shall have two-lamp
ballasts. Three-lamp ballasts shall not be used unless specified.

Ballasts for interior fixtures shall be rated for starting operation at ambient
temperatures to 50°F.

Ballasts for exterior fixtures shall be rated for starting operation at ambient
temperatures to minus 20°F. Acceptable ballast manufacturers: EBT, GE,
Magnetek, Motorola, Osram/Sylvania, or approved equal.

High intensity discharge ballasts shall be constant wattage type; have power
factor of not less than 90%; be approved by E.T.L. and C.B.M. and have a UL
label. Starting current shall not exceed operating current. Ballast shall
maintain lamp operation for voltage fluctuations of plus or minus 10% of rated
voltage. Voltage rating shall correspond to voltage of circuit to which ballast
will be connected. Ballasts for exterior fixtures shall be rated for operation at

ambient temperatures to minus 20°F. Ballasts shall have single or double
fusing per Lighting Fixture Schedule shown on Contract Drawings.

10. All ballasts shall have a minimum two (2) year material and labor guarantee.
Fixture Supports and Hangers

1.

Provide all necessary mounting brackets and boxes, suitable for the area in
which it is to be installed, as required for a complete functioning installation for
all lighting for project.

Provide all necessary hangers and supports for proper fixture installation.
Fixture supports shall be capable of supporting a minimum of two and one-half
times the load normally carried at point of support.

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16500-4
LIGHTING

PART 3 - EXECUTION

3.1

3.2

INSTALLATION

A. Refer to the contract documents for fixture mounting heights.

B. Mount fixtures in true vertical and horizontal alignment.

C. Fixture locations shown on the drawings are diagrammatic only. They are shown for
quantity and approximate locations only. Adjust the location of any lighting fixture
as required to avoid interferences with existing conditions, equipment, and of the
work of other trades.

D. Each fixture provided shall be a completely finished unit with all components,
mounting and/or hanging devices necessary for the proper installation of the
particular fixture.

E. Mount all emergency lighting, exit signs, and light fixtures as indicated on the
contract drawings when possible.

F. Ground all lighting fixtures and lighting poles per the National Electric Code, Article
250, as shown on drawings, and specification 16450.

G. Hangers and supports shall be anchored to channels in the ceiling construction, to
the structural slab or to structural members above the suspended ceiling.

H. Fixtures mounted in suspended "lay-in" ceilings shall be supported from inverted
"tee-bars" using "Caddy" clips suitable for the fixture type installed.

I. All suspended fixtures shall be pendant mounted and be suspended from the ceiling
using cast swivel type connectors and 3/4 inch rigid galvanized steel conduit
minimum, unless otherwise specified by the fixture manufacturer.

J. Provide all necessary accessories for "end-to-end" mounting where continuous rows
of fluorescent fixtures are indicated.

K. Coordinate all recessed fixtures with the ceiling grid system prior to installation of
the ceiling grid system where applicable. Lighting fixtures and mounting shall be
compatible with the ceiling grid system.

L. Where multiple switching of fluorescent fixtures is indicated, the outside two (2)
lamps of each fixture in the controlled area shall be switched separately from the
interior (center) lamp(s).

TESTING

A. Refer to Section 16950 for testing requirements.

END OF SECTION

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PART 1 - GENERAL

16900-1

SECTION 16900

CONTROLS

1.1 DESCRIPTION
A. Provide and install all panel and enclosure components and appurtenances as shown
on the Drawings as Local Control Stations as specified herein. All components shall
meet NEMA ratings as indicated on drawing E-1 for the specific area where they are
to be installed.

1.2 SUBMITTALS TO THE ENGINEER
A. Shop drawings are required for all items provided under this Section. Submittals
shall be in accordance with Sections 01340 and 16010.

PART 2 - PRODUCT

2.1 MATERIALS
A. Control Station Enclosures:
1. General:

a.

b.

Control stations shall be heavy duty oil-tight/watertight type stainless steel
enclosure and shall consist of operators with contact blocks and indicator
lights as indicated on the contract drawings. Enclosures shall have
sufficient depth to accommodate mounting four Class 9001 KA-1 contact
blocks side-by-side and in tandem behind a single operator for a maximum
of eight circuits, four normally open and four normally closed.

Enclosures shall have the required number of holes for the number of
operators pre-manufactured as shown on the contract drawings.

2. NEMA 12 and NEMA 4X

a.
b.

Enclosures shall be 16 gauge Type 304 stainless steel gasketed enclosures.
Acceptable manufacturers are Allen Bradley, General Electric, Square D,
or equivalent.

3. Class I, Division I and Class 1, Division 2 Enclosures

a.

b.

Enclosures and covers shall be shall be iron or aluminum and gasketed with
pre manufactured devices installed by manufacturer.

Acceptable manufactures are Cooper Cooper Crouse-Hinds Flex Station
Control Stations, Allen-Bradley, Square D, or equivalent.

B. Operators:
1. General:
a. All operators used in control stations shall be Square D type K and shall be

suitable for cover mounting in a 1-7/32 inch diameter notch type cover hole
and shall be held in place by the locking thrust washer. All operators shall
be heavy duty oil/water tight, be 30mm in size, and maintain the NEMA
rating of the enclosure.

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CONTROLS

b. Push buttons shall have removable inserts in eight different colors for
function color coding. Push-button inserts shall be removable from the
front of the control station without disturbing the wiring or mounting of the
control units.

c. Selector switches shall have removable knobs in eight different colors for
function color coding. Selector switch knobs shall be removable from the
front of the control station without disturbing the wiring or mounting of the
control units. Operators for selector switches shall be bat wing type.

d. Emergency stop pushbutton operators shall be large operator head type, red
mushroom-head, maintained type switch with push to open and pull to re-
engage control circuit. Provide multiple output contact type as shown on
the drawings.

e. Indicator lights shall be heavy duty, oiltight and have the following
requirements:

e Designed to operate at 120 volts, 60 Hz AC.

e Provided with a chrome-plated metal or anodized-aluminum mounting
rings, engraved as indicated on the Drawings.

e Lens color shall be as indicated on drawings.

e Shall be 30 mm LED lamp type, with “Push to Test” requirements.

f. Provide legend plates which describe function of each device on control
station.

2. Contact blocks used in heavy duty oil-tight control stations shall be of Square
D Type K single-pole, single-throw (SPST), single-pole, double-throw (SPDT).
Contact blocks shall be suitable for mounting side by side and/or in tandem to
the base of the operator with this following requirements:

a. mounting screws shall be captive with a drilled and tapped head to permit
easy tandem mounting of contact blocks.

b. Terminals shall be pressure wire type with a self-lifting pressure clamp that
will compensate for wire of different size ranging from #12-#18 solid or
stranded.

c. Contacts shall be double break, and silver plated.

3. Class 1 Division 2 operators shall meet all requirements of section 2.1.B.1 with
the addition of devices being hermetically sealed by the factory.

C. Control Circuit Fuses

1. Fuses shall be 3AB ceramic body fuses rated for at least 125 volts at the current
ratings shown on the Drawings. Fuse size shall be 44” x 114”.

2. Blow time shall be:

e 110%, 4 hours minimum;

e 135%, 1 hour maximum;

e 200%, 15 seconds maximum for 1/8-12 amp fuses

e 200%, 60 seconds maximum for 15-30 amp fuses.

3. Fuses shall be Littlefuse, Bussmann, or approved equal.

D._ Relays

1. Industrial Control Relays - Industrial control relays shall be utilized where
specifically called for on the Drawings or within the Specifications. Industrial
control relays with 10 ampere contact rating shall be Square D, Class 8501 Type

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