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7.

8.

16050-5
BASIC MATERIALS AND METHODS

Approved manufacturers shall be: Rob Roy Plasti Bond, Thomas & Betts-
OCAL or equal.

All fittings shall be of the same material as the respective raceway system.

B. Conductors and Cable

1.

All power wiring conductors (P-X on drawings) shall be insulated for 600 volts,

Type XHHW insulation, unless otherwise noted. Conductors shall be standard

AWG and KCMIL sizes. Conductors shall be 98 percent copper, stranded, heat

and moisture resistant with cross-linked synthetic polymer insulation for all

sizes No. 12 AWG and larger. Smaller sizes shall not be used except for
communications and special systems. For lighting and receptacle circuits, solid
wire may be used in lieu of stranded wire, for No. 12 and No. 10 AWG
only. Conductors shall be labeled with U.L. approval and be marked with the
manufacturer's name, wire size and insulation type. All underground power
cables shall be UL Listed and Labeled for underground use in wet locations.

Acceptable Manufacturers: Okonite, Southwire, Pirelli, or approved

equivalent.

Control Wiring:

a. All control wiring (120 or 24 volt, AC or DC) conductors within buildings
or above grade shall be insulated for 600 volts, unless otherwise noted, and
shall be No. 14 AWG minimum size, or larger if so indicated on the
Drawings. Conductors shall be 98 percent copper, stranded, heat and mois-
ture resistant, and thermal plastic insulated and shall be type
THWN/THHN.

b. All conductors for control wiring located below grade shall be 600V, 98
percent copper, stranded, heat and moisture resistant, with cross-linked
synthetic polymer insulation type XHHW. All underground control cables
shall be U.L. Listed and Labeled for underground use in wet locations.
Acceptable Manufacturers: Okonite, Southwire, Pirelli, or approved
equivalent.

Metal clad cable shall consist of thermal plastic insulated copper conductors, of

size and quantity indicated, protected by a positive interlocked armor of

galvanized steel. The conductors shall be twisted together and shall have an

overall moisture and fire resistant fibrous covering. The cable shall have a

grounding conductor of copper. The cable shall meet the requirements of

Article 330 of the National Electrical Code for "Type MC" Metal Clad Cable

and shall bear the U. L. Label. Acceptable Manufacturers: Okonite, Pirelli,

Houston Wire & Cable, or approved equivalent.

All instrumentation control cables (4-20 mA signal) referred to on the Drawings

as "twisted shielded pairs", shall be rated 600V, 80 deg. C, individually shielded

twisted pairs, No. 16 AWG, stranded conductors of tinned copper with
polyethylene insulation and aluminum-polyester shielding with #18 awg
stranded copper drain wire surrounded by a chrome PVC jacket. Control cable
shall be UL listed with 100% shield coverage. All underground instrumentation
cables shall be U.L. Listed and Labeled for underground use in wet locations.

Acceptable Manufacturers: Belden, Alpha Wire & Cable or approved equal.

Provide instrumentation control cables equivalent to Belden type 8719 or

equivalent unless specified otherwise by the instrument manufacturer.

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5. Three conductor shielded cable for use with remote potentiometers for varying
motor speeds etc. Cable shall be stranded, tinned copper, polyethylene
insulated, drain wires with aluminum-polyester shielding with #18 awg
stranded copper drain wire surrounded by a chrome PVC jacket. Control cable
shall be rated 600 volt and shall be UL listed with 100% shield
coverage. Acceptable Manufacturers: Belden, Alpha Wire & Cable or
approved equal. Provide three conductor shielded cables equivalent to Belden
type 8618 or equivalent unless specified otherwise by the instrument
manufacturer.

Motor Starters

1. For Single Phase Motors: Fractional Horsepower Manual Motor Starter with
Thermal Overload(s) and a red running indicating light unless noted otherwise:
a. 120 Volt, Single-Pole, H-O-A Selector, Surface Mounted: Square-D FG-71P

2. For Three Phase Motors: Shall be combination starter/disconnect type,
employing magnetic starter (NEMA Size 1 minimum), rated to match the
equipment served, with thermal overload protection for each phase and with an
M.C.P. type circuit breaker/disconnect sized per the circuit breaker
manufacturer's recommendations for coordination with the thermal overload
protection, lights, relays and auxiliary devices. Combination starters shall be
provided with a 480, 240 or 208-120 volt control power transformer with
primary and secondary fusing. Provide 2 N.O. and 2 N.C. auxiliary contacts.

3. Refer to control wiring diagrams on the drawings for specific requirements and
devices.

4. Acceptable Manufacturers:

5. Square-D, Cutler-Hammer, General Electric, Allen-Bradley, Siemens or
approved equal.

Safety Switches

1. All safety switches shall be NEMA Type HD and Underwriters Laboratories
Listed.

2. The handle position shall indicate whether the switch is "ON" or "OFF".

3. All current carrying parts shall be plated to resist corrosion and promote cool
operation. Switches shall have removable arc suppressers where necessary to
permit easy access to line side lugs. Lugs shall be front removable and UL
listed for 60°C or 75°C, aluminum or copper wires.

4. Provisions for padlocking the switch in the "OFF" position with at least three
locks shall be provided.

5. Switches shall have a dual cover interlock to prevent unauthorized opening of
the switch door when the handle is in the "ON" position, and to prevent closing
of the switch mechanism with the door open.

6. Disconnect switches, indicated on the drawing to be used for motors controlled
by variable frequency drives shall be as indicated above, except shall be 4 pole
type switches. The fourth pole shall be wired directly to the disable input, in
series with the safety e-stop, in order to lock-out and immediately shutdown the
drive. The auxiliary 4th pole shall open prior to any of the other three power
poles and shall be designed for proper use with VFD type load circuits.

7. Enclosures

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a. Safety switch enclosures for non-hazardous locations painted galvanized
steel for NEMA 12 area and stainless steel for NEMA 4X areas.

b. Switches specified as NEMA 7 & 9 shall be furnished in cast aluminum
enclosures with conduit provisions as specified. Enclosures shall be
provided with a bolted cover and with sealing means for hazardous location
protection. "ON" and "OFF" position identification shall be cast into the
cover, not painted on or applied with an adhesive.

8. Acceptable Manufacturers: Square-D, Cutler-Hammer, General Electric,

Siemens, or approved equal.

1. Enclosures

a. Safety switch enclosures for non-hazardous locations painted galvanized
steel for NEMA 12 area and stainless steel for NEMA 4X areas. Refer to
Drawing E-1 for NEMA classifications.

b. Switches specified as NEMA 7 & 9 shall be furnished in cast aluminum
enclosures with conduit provisions as specified. Enclosures shall be
provided with a bolted cover and with sealing means for hazardous location
protection. "ON" and "OFF" position identification shall be cast into the
cover, not painted on or applied with an adhesive.

2. Acceptable Manufacturers: Square-D, Cutler-Hammer, General Electric,

Siemens, or approved equal.

Link Seal

1. Conduit wall and floor seals for cored holes and sleeved openings shall be Link
Seal, Innerlynx or approved equivalent. Refer to the contract drawings for
additional requirements.

Cable Seals

1. Conduit sealing bushings shall be OZ Gedney Co., Type CSB Series or equal.

Conduit Seals-Offs

1. Provide Class I, Div. 1, Group D and Class 1, Div. 2 seals as required by the
N.E.C. Material shall match the conduit in which being installed.

PART 3 - EXECUTION

3.1 INSTALLATION

A.

Unless otherwise noted, wiring for all systems indicated in the Contract Documents
shall consist of insulated conductors installed in raceways in accordance with the
manufacturer's instructions.

1. Raceways shall be continuous from outlet box to outlet box and from outlet box
to cabinet, junction or pull box. Secure and bond raceways to all boxes and
cabinets such that each system of raceways will be electrically continuous
throughout.

1. Contract drawing E-1 NEMA CLASSIFICATIONS FOR ELECTRICAL
EQUIPMENT AND ENCLOSURES indicates the NEMA ratings of each
location at the facility. Unless otherwise indicated on the Drawings and Conduit
Installation Schedule on E-1 install all wiring in the following applicable
raceway system: Wiring above 600 volts in indoor dry locations (NEMA 1 or

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12) Heavywall aluminum conduit. Galvanized heavy duty rigid steel conduit as

approved by the Engineer.

Wiring 600 volts or less in dry concealed locations [hung above ceilings, attic

areas, or within CMU block walls] (NEMA 1 or 12): Galvanized electrical

metallic tubing (for raceway sizes up to and including 2" trade size) or
galvanized rigid heavy wall steel conduit.

Wiring 600 volts or less in dry exposed indoor locations (NEMA 1 or 12): Rigid

heavy wall aluminum conduit. Galvanized rigid heavy wall steel conduit as

approved by the Engineer.

Wiring 600 volts or less in indoor wet locations or outdoor above grade

locations (NEMA 3R or 4X): Rigid heavy wall aluminum conduit. Galvanized

rigid heavy wall steel conduit as approved by the Engineer.

Wiring 600 volts or less in indoor or outdoor corrosive chemical areas (NEMA

4X Corrosive) (SAL 12/15/14): use PVC-coated rigid steel conduit in these

areas less than 8 feet from finished floor. Use PVC Schedule 80 conduit in these
areas 8 feet or more from finished floor in corrosive chemical areas. Where
conduits transition, a NEMA 4X stainless steel or PVC coated junction box or

pull box must be installed. The metal conduit shall be provided with a

grounding bushing and the metal conduit and metal box shall be bonded to the

ground conductor within the raceway per NEC.

Wiring 600 volts or less in hazardous locations (NEMA 7 or 9): Galvanized

rigid heavy wall steel conduit, PVC galvanized rigid steel conduit, or rigid

heavy wall aluminum conduit.

a. PVC coated rigid galvanized steel (RGS) conduit: manufacturer shall
provide field installers certification training. All installers shall be field
certified from manufacturer and provide proof of certification for
installation upon request.

b. All field installation and repairs of PVC coated rigid galvanized steel (RGS)
conduit shall conform to manufacturer’s recommendation and use of
manufacturer patch and repair kits in order to guarantee certified products
are used and compliance with all factory warranty guidelines are met.

Use of Miscellaneous Conduit Types

a. Flexible "liquid tight" metal conduit shall be used for final connection to
the following:

* all motors * rotating or vibrating equipment

* dry type transformers * recessed lighting fixtures
Lengths of liquid tight flexible metal conduit shall be kept to a minimum
(12 to 18 inches) and maximum length of 2'-6" except when dictated
otherwise by a particular installation approved by the Engineer and as
allowed by NEC.

b. PVC Schedule 80 non metallic conduit shall be used as shown on drawings.

c. Conductors for fire alarm circuits shall be routed in rigid galvanized steel
conduit unless otherwise noted on the drawings. Minimum conduit size
shall be 4".

d. Armored direct burial cable shall be installed underground to equipment as
shown on drawings.

e. Metal Clad cable (MC) shall be installed in the following locations:

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8.

16050-9
BASIC MATERIALS AND METHODS

i. | Used for whips for concealed lights above hung ceiling limited to 3'
in length.

ii. Within studded concealed wood frame walls for receptacles and light
switching.

All signal wiring shall be installed in rigid galvanized steel or PVC coated rigid
galvanized steel conduit.

C. General Raceways Installation Requirements:

1.

ao

10.

11.

12.

13.

14.

Sized as indicated on the Drawings. Where sizes are not indicated, raceways
shall be sized per the National Electrical Code in accordance with the quantity,
size, type and insulation of conductors to be installed. However, raceways shall
be minimum three quarter (3/4") trade size for all installation unless otherwise
noted.

Installed to provide adequate grounding between all outlets and the established
electrical system ground. Bond conduit systems per NEC.

Cut square, free of burrs due to field cutting or manufacture, and bushed where
necessary. Spray all ends of threaded conduit with cold galvanizing spray
compound.

Installed with exterior surfaces not less than six inches (6") from any surface
with a temperature of 200 degrees F or higher.

Plugged at the ends of each roughed-in raceway with an approved cap or disc
to prevent the entrance of foreign materials during construction.

Concealed throughout except where exposure is permitted by the Engineer.
Installed parallel or perpendicular to floors, walls and ceilings.

Installed with a minimum of bends and offsets. All bends shall be made without
kinking or destroying the cross section contour of the raceway. Factory made
bends shall be used for raceways one-inch (1") trade size and larger.

Installed with U.L. approved raintight and concrete-tight couplings and
connectors.

Firmly fastened within three feet of each outlet box, junction box, cabinet or
fitting. Raceways shall not be attached to or supported by wooden plug anchors
or supported from Mechanical Work such as ductwork, piping, etc.

Arranged in a neat manner for access and allow for access to work installed by
other trades.

If itis necessary to burn holes through webs of beams or girders, call such points
to the attention of the Engineer and receive written approval both as to location
and size of hole before proceeding with work. All holes shall be burned no
larger than absolutely necessary.

Where raceways puncture roof, install pitch pockets as required in order that
the roof warranty is maintained.

Where raceways penetrate fire-rated walls, floors, or ceilings, install firestops
equal to the rating of the wall, floor, or ceiling, per specification section 07270,
"Fireproofing".

D. Wiring Methods

1.

Feeder conductors shall be continuous from point of origin to load termination
without splice. If this is not practical, contact the Engineer and receive written

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approval for splicing prior to installation of feeder(s). Refer to Splicing
Methods listed below.

Do not pull conductors into raceways until raceway system, including all
outlets, cabinets, bushings and fittings, is completed. Verify that all work of
other trades which may cause conductor damage is completed. Use only
ULL. approved cable lubricants when necessary. Do not use mechanical means
to pull conductors No. 8 or smaller.

In general, conductors shall be the same size from the last protective device to
the load.

All wiring systems shall be properly grounded and continuously polarized
throughout, following the color coding specified. Connect branch circuit
wiring at panelboards, as required, in order to provide a "balanced" three-phase
load on feeders.

All feeder connections shall be made to bus and other equipment using
solderless, pressure type terminal lugs, as manufactured by Burndy, National,
O.Z., T. & B., or equivalent.

E. Conduit Support

1.

Support adequately by malleable iron pipe clamps or other approved
methods. In exterior or wet locations and along outside wall supports shall
allow not less than 1/4 inch air space between raceway and wall. Firmly
fasten raceway within 3 feet of each outlet box, junction box, cabinet or
fitting. The following table lists maximum _ spacing between
supports. Additional supports may be required due to field conditions, strength
of supporting members, etc. Furnish and install such supports at no additional
cost to Owner.

Conduit Trade Type of Run | Horizontal Spacing Vertical

Size in Feet Spacing in Feet

34" Concealed 7 10

1:, 1-1/4" Concealed 8 10

1-1/2" & lIgr. Concealed 10 10

5" Exposed 5 7

1", 1-1/4" Exposed 7 8

1-1/2" & Igr. Exposed 10 10

F. Installation of Concrete Envelope

1.

Wherever a cluster of four or more raceways rise out of floor exposed, provide
neatly formed 6" high concrete envelope with chamfered edges around
raceways.

G. Installation of Spare Conduits

1.

At each flush mounted panel-board, terminal cabinet, control cabinet, etc.,
provide four (4) spare three-quarter inch (3/4) raceways from panel-board, etc.
to an area above the nearest accessible ceiling space and floor space in the
specific room location. Make 90 degree turn above the ceiling or below the floor
and cap all conduits.

Where drawings indicate a "Spare" conduit, install a #14 AWG fish wire in all
runs to facilitate future installation of conductors.

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Installation of Bushings and Grounding Bushings

1. Provide grounding type insulated bushings on all power conduits regardless of
size.

2. Provide grounding type insulated bushings on all control conduit sizes and
signal conduit sizes one and one-quarter inch (I-1/4") trade size and larger.

3. Provide standard bushings for conduits one inch (I") and smaller unless
otherwise stated.

4. Install cable seal bushings in conduits for all outdoor locations and NEMA 4X
locations to prevent moisture from entering enclosures and equipment.

5. Install cable seals in all conduits where there is a change in temperature such as
transitioning from a room to the attic.

6. Provide a bushing at each conduit termination unless fitting at box where
conduit terminates has hubs designed in such a manner to afford equivalent
protection to conductors.

7. Any installations not provided with these requirements shall be removed and
reinstalled at no additional cost to the Owner.

Myers Hubs

1. Myers hubs shall be installed on junction boxes and enclosures which do not
have cast hubs in non classified areas.

Expansion Fittings

1. All conduit installations where conduits extend up out of the ground at
buildings, structures or equipment shall be provided with expansion fittings.

2. Expansion/deflection type fittings shall be provided at all horizontal or vertical
expansion joints, located in new or existing buildings and structures.

Conduit Seals

1. Conduit seals shall be installed in all explosion proof areas Class 1 Division 1,
and Class 1, Division 2 areas. The conduit seal shall be installed per the
National Electric Code Article 501.15 as well as what is shown on the drawings.

2. Upon installation of sealant, the contractor shall mark the conduit seal with
glyptal or permanent marker to indicate that the conduit seal is filled properly.

Link Seals

1. All penetrations through existing and new concrete floors, and walls shall be
core drilled and sleeved, and installed with a link seal.

2. Refer to all details shown on the Contract Drawings for conduit sealing fittings
and weatherproof conduit seals. All conduit penetrations are required to be
provided with seals as noted on the Contract Drawings and as specified. Any
installations not provided with these requirements shall be removed and
reinstalled at no additional cost to the Owner.

Raceways through Wall Bond Outs

1. In specific areas wall bond outs have been designed and shown on the electrical
and structural drawings for conduit installations.

Splicing Methods

1. Feeder conductors shall be continuous from point of origin to load termination
without splice. If this is not practical, contact the Engineer and receive written
approval for splicing prior to installation of feeder(s).

2. For splices and taps, No. 10 AWG and smaller, use solderless "Thread-On"
connectors having spiral steel spring and insulated with a vinyl cap and skirt,

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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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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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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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