HomeMy WebLinkAbout26 05 00CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 1
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
SECTION 26 05 00 ELECTRICAL BASIC MATERIALS & METHODS
1.0 GENERAL
1.01 RELATED DOCUMENTS
A.The Contract Documents and the General Provisions of the Contract, including the General Conditions of
the Contract for Construction, Supplementary Conditions, Special Conditions and Division 1
Specification Sections apply to the Work of this Section.
B.The Work of Section 26 05 00 - Electrical Basic Materials and Methods and Section 26 05 01 - Electrical
Coordination Drawing Requirements apply to the Work of this Section.
1.02 WORK INCLUDED
A.Provide Basic Materials and Methods as follows:
1.Conduit
2.Condui t Fitt ings
3.Supp ort Syste ms
4.Surfa ce Race ways
5.Outlet, Junction and Pull Boxes
6.Conductors
7.Conductor Splicing Materials
8.Wiring Devices
9.Conductor Pulling Lubricant
B.Provide work to remove, make safe and reinstall electrical, telecommunications, fire alarm device and
circuits at wall and partition openings, and reinstall in same locations after wall repair.
1.03 SUBMITTALS
A.Provide submitt als, Sh op Drawi ngs and Co ordin ation Drawin gs. Provid e for th e foll owing:
1.Raceways, cable trays, wireways, conduits, fittings, support systems.
2.Junction boxes.
3.Conductors.
4.Conductor splicing material.
5.Wiring devices, including but not limited to, receptacles and switches.
6.Pulling lubricant.
7.Sleeves , inser ts and o penin gs.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 2
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
2.0 PRODUCTS
2.01 CONDUCTORS
A.Conductors:
1.Conduc tors s hall be anneal ed copp er, 98 pe rcent conduc tivity.
2.Grounding conductor shall have green color coded insulation.
3.Signal circuits shall be color coded using solid colors with contrasting tracer color lines.
4.Panel feeders shall be copper conductors unless otherwise shown.
5.Aluminum conductors shall not be acceptable.
B.Insulation:
1.600 volts rating for building feeders and branch circuits.
2.300 volts rating for signal systems operating at 50 volts or less.
3.# 12 through # 8 AWG: Dry locations , use type THWN.
4.# 6 and larger in normally dry locati ons type THWN.
5.# 12 AWG and larger: Under buildings, slab on grade, steam tunnels, crawlspaces, boiler rooms,
pump house, kitchen, mechanical r ooms, use type THWN.
6.Wiring within removable partitions: Use type UF where permitted by code.
7.Wiring to street lighting systems, snow melting systems, exterior signs, etc., use THWN, T HHN
or UF in conduit.
C.Cables:
1.Power cables shall be allowed only as called out on Drawings.
2.All cables shal l be either a UL-listed 600 V MC or AC.
3.All conductors shall comply with Part A and Part B of this Section.
4.Phase conductors within the cable shall be marked or colored for identification.
5.Cable shall be constructed with a galvanized steel interlocking armor. Aluminum shall not be
allowed.
6.Connectors shall be similar to Flexible Metal Conduit (FMC).
7.Manufacturers: Southwire Duraclad or similar in General Cable.
D.Make: Anaconda, General Cable, Rome Cable, Circle, General Electric, Essex, Okonite, Brand-Rex.
2.02 CONDUCTOR SPLICING MATERIALS
A.# 10 AWG and Smaller (600V Class):
1.U.L. listed pressure connectors.
2.Ideal “Wingnuts”, 3M “Scotchloks”, solder and tape, Buchanan splice taps, or Sta-Kon joints.
B.# 8 AWG and Larger (600V Class):
1.Bolted or crimped pressure connectors.
2.Burndy, OZ or AMP taped.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 3
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
C.Tape (600V Class):
1.U.L. list ed fo r 600 volt minimu m.
2.Scotch 33 or 80, or Plymouth, or Bishop.
2.03 CONDUCTOR PULLING LUBRICANT
A.The cable lubricant shall meet the following performance specifications:
1.When subjected to a 100 lbs./ft. Normal force, between (type) cable and (type) conduit, the
lubricated cable system shall have a coefficient of kinetic friction less than 0.25 (pulling force
greater than lbs/ft).
2.The lubricant shall be U.L. (or CSA) listed.
3.When used on high voltage cable, the lubricant shall not affect the volume resistivity of any
semi-conducting jacket or insulation shield present. The volume resistivity of the
semi-conducting material shall at no time increase more than 100% when tested via the ICEA
T-25-425 method, 90 degrees centigrade exposure, 7 day test, readings made at 23 degrees
centi grade da ily.
4.The lubricant shall not affect the tensile/elongation properties of the cable jacket more than
existing ICEA/NEMA aging specifica tions allow.
5.The lubricant shall contain no waxes, greases, silicones, or polyalkylene glycol oils or waxes.
B.Manufacturer: Polywater J. American Polywater Corporation, P.O. Box 53, Stillwater, Minnesota 55082.
2.04 CONDUIT
A.Flexible Metal Conduit:
1.Steel interlock type, galvanized, with galvanized steel fittings.
2.Complies with NEC Article 348 and U.L. standards for flexible conduit.
3.Make: Galflex or approved equal.
B.Electrical Metallic Tubing (EMT):
1.EMT shall be low carbon steel, with set screw type, concrete tight fittings.
2.Exterior shall be galvanized by electrolytic process and extra coat provided by bright dip in zinc
chromate solution.
3.Interior shall be coated with baked planting process.
4.Make: Cerro, Republic, Allied Tube, Youngstown, Wheatland or approved equal.
C.Liquidtight Flexible Conduit:
1.Heavy galvanized steel core type.
2.Oil resistant thermoplastic cover, grey color.
3.Integral ground wire, sizes d" to 1¼".
4.For high/low temperatur e application s, use type H.C.
5.Use steel, gasketed, insulated throat, compression type liquidtight fittings.
6.Make: Anaconda, O.Z. Gedney, Ultratite or approved equal.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 4
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
D.Rigid Non Metallic Conduit (PVC):
1.Heavy wall, 90°C temperature rated, polyvinyl chloride Schedule 40 conforming to NEMA
Standards.
2.Approved standard manufacturer’s fittings and supports as required.
3.Make: Carlon or approved equal.
E.Rigid Metallic Conduit (RGS):
1.Rigid galvanized steel, hot dipped threaded type.
2.Galvanized threaded malleable iron fittings.
3.Make: Cerro, Republic, Allied Tube, Youngstown, Wheatland or approved equal.
F.PVC Coated Rigid Metallic Conduit (PRGS):
1.Rigid gal vanized s teel, hot dip ped, th reade d with 40 mil min polyvi nyl chlo ride e xteri or coat ing.
2.UL-listed, conforming to NEMA RN-1-1998.
3.Make: Korkap or approved equal.
G.Aluminum flexible conduit and cast or plotted metal conduit shall not be used.
2.05 CONDUIT FITTINGS
A.EMT:
1.All fittings shall be U.L. listed steel or malleable iron.
2.Branch circuit conduits larger than 1" diameter and conduits containing feeders serving
panelboards shall have grounding type bushings.
3.Set screw type fittings, concrete tight as manufactured by Neer, OZ Gedney, Bridgeport or equal.
4.Compression connectors, squeeze type Efcor or equal.
B.Flexible:
1.Fittings shall be UL listed steel or malleable iron.
2.Fittings for flexible steel conduits shall be squeeze type as manufactured by Thomas and Betts,
Steel City or Appleton.
C.Liquidtight:
1.Fittings shall be malleable iron, tapered hub threads, with safe-edge ground cone and double
bevel se aling ri ng.
2.Fittings for liquid tight flexible conduits shall be screw-in type manufactured by Thomas and
Betts Company or Pi ttsbu rgh Stan dard Co nduit Company.
D.Rigid Conduit:
1.Bushings for metal conduit terminations shall be the nylon insulated type throat, with grounding
type loc knut ahe ad of bus hing.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 5
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
2.Die cast zinc-alloy and pressure cast and indenter type fittings shall not be approved. Provide
steel or malle able i ron onl y.
3.Conduit hubs shall be as manufactured by Myers Electric Products, Inc., Raco, T&B, General
Electric Company or equal.
E.PVC Coated Rigid Metallic Conduit:
1.All ferrous fittings shall be PVC coated, UL-listed and approved by conduit manufacturer for use
with conduit.
2.A urethane coating shall be uniformly applied to the interior of all conduit fittings. All threads
shall have a uniform urethane coating applied.
F.Die cast, pressure cast, potted metal or similar type fittings shall not be used.
2.06 CONDUIT SUPPORT SYSTEMS
A.Trapeze Type Hangers:
1.Steel horizontal members and threaded hanger rods.
2.Rods shall not be less than ½" diameter.
3.Make: Kindorf G-953 Series, or equal in Unistrut or B-line complete with all necessary bolts,
screws, angles, anchors, connection plates, straps, etc., as required to perform the necessary
functions.
B.Conduit Clamps and Supports:
1.Steel hangers and threaded hex nuts.
2.Kindorf C-149 series or equal in Unistrut or B-line complete with all necessary bolts, screws,
angles, anchors, connection plates, straps, etc as required to perform the necessary functions.
2.07 OUTLET, JUNCTION AND PULLBOXES
A.Type:
1.Unless otherwise noted on the Drawings, boxes shall be NEMA rated as follows:
a.Where installed indoors and intended primarily for protection against access to
hazardous partes, boxes shall be NEMA 1 rated.
b.Where installed indoors or outdoors and intended for protection against access to
hazardous parts, as well as protection against ingress of falling water (rain, sleet, snow),
boxes shall be NEMA 3R rated.
c.Where installed indoors or outdoors and intended for protection against access to
hazardous to hazardous parts, as well as protection against ingress of falling water and
direct spray, boxes shall be NEMA 4 rated.
d.Where the requirements of Item d. are met, as well as protection against corrosion, boxes
shall be NEMA 4X rated.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 6
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
B.Construction:
1.Galvanized, stamped steel shall be provided when recessed in construction or exposed on walls
and ceilings in dry areas.
2.Deep condulet style with hubs, or Myers hubs for exposed work in damp area or wet location or
for weatherproof type outlets.
3.Large pullboxes shall require 14 gauge galvanized steel, fold and weld construction; with 14
gauge galvanized and gasketed steel cover secured in place by galvanized sheet metal screws on
maximum 10 inches centers. All cut edges to be free of burrs.
4.Provide cast iron, gasketed, watertight boxes where installed in earth, surface mounted outdoors,
where threaded connection is needed.
C.Size: Provide as required for number and size of conduit and conductors. Coordinate depth to suit wall
depth and construction. Use special forms and designs as required for outlet facilities.
D.Covers: Provide design and style to suit outlet box and electric facility. Provide for all unused or
non-designated boxes. NEMA 1, 12, 3R, rating for area environment and use “while-in-use” watertight
cover with gasket for exterior boxes.
E.Junction and pullboxes used for fire alarm shall be painted red. Covers shall also be painted red.
F.Fixture Studs: Use d" studs and securely fastened to support fixtures.
G.Make: Appleton, Crouse-Hinds, O.Z. Gedney, National, Steel City, Raco, Pyle-National.
2.08 SLEEVES, INSERTS AND OPENINGS
A.“Link-seal” assembly as manufactured by Thunderline (see Execution for locations).
B.Schedule 40 steel pipe, packed with fire barrier wool and caulk (see Execution for locations).
C.Fire barrier wool and caulk. No sleeve necessary (see Execution for locations).
D.Where 3 hour fire rating is required, use split collar fire seal with sleeve.
E.Where penetr ating t hrough a floor , the sl eeve sha ll be wa terpr oof as we ll as f irepr oof. Sub mit thro ugh
flo or sl eeve syst em.
2.09 SURFACE RACEWAYS
A.Surface Raceways:
1.Provide enameled steel, code sized for quantity of wires indicated; use manufacturer’s standard
fittings.
2.Where pre-wired plug-in strips are shown on Drawings, use assemblies with 20 amperes
grounding type receptacle with outlet on 12 inches centers.
3.Provide pre-punc hed sna p-on cover s to sui t outl et spac ing.
4.Combination assemblies for communication and power shall contain integral dividers.
5.Telephone, computer, cable openings shall have bushed openings, with split stainless plate.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 7
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
6.Provide all couplings, device plates, blank end fittings, entrance and wall box connectors,
elbows, breakers, wire clips, etc., to make a complete job.
7.Make: Wiremold “Plugmold 2000” Series for plug-in service. Wiremold 500 or 700 for raceway
application.
8.Color: All wiremold products shall match wall finish. Contractor shall order in grey finish and
paint to match wall finish. Ivory colored (v-series) wiremold cannot be painted properly due to
its scuffcoat finish.
B.Pre-Wir ed Surf ace Rac eway:
1.Raceway shall be a two piece design with a base and a snap-on cover. The snap shall be
confi gured su ch that conduc tor dama ge will n ot inad verten tly occu r duri ng assembl y.
Pre-assembled wiring harness of #12 AWG copper shall be provided in single circuit and tow
circuit configuration as required. (See Plans) Receptacles shall be duplex type.
2.The system shall include all necessary fittings; various elbow types, adapter, end cap, tees and
splice cover. All shall be made of rigid PVC material to match color of raceway. Entire assembly
shall be office white.
3.Manufactured by Wiremold Company or approved equal.
2.10 WIRING DEVICES
A.Receptacle, Surge Protection Device:
1.Copper-alloy contacts, thermal protection in three modes (L-G, L-N, N-G) absorbing 340 joules
per mode of energy absorption and 24,000 amp maximum surge capability, three thermal fuses
and two overcurrent protection fuses, autoground clip.
2.High impact resistant thermoplastic for all exposed molded parts, wrap around face-locking
strap, epoxy compound encapsulating the internal components.
3.UL-liste d 1449 3r d Editi on, Type 3 SPD, 20 amp c ircui t rati ng.
4.Visual LED surge status indicator to alert user to surge suppression circuit condition. Visual
indicator will be illuminated (GREEN) when power is on and surge suppression circuit is fully
functional. Visual indicator will not be flashing red upon loss of surge suppression protection.
Audible alarm will sound when there is a loss of surge suppression protection. Audible alarm
able to be turned on/off.
5.Extra heavy duty use surge protect ion device recepta cle, NEMA 5-20R.
6.Make: Pass & Seymour #PT 5362SP with plu gtail connector PT RA6STR.
B.Rece pta cle , GFCI:
1.Heavy-duty brass mounting strap.
2.High impac t resi stant , thermop lasti c const ructi on for r ecept acle f ace and back body.
3.UL-listed, 20 amp circuit rating NEMA Type 5-20R with stranded right angle plugtail connector.
4.Trip indicator light (red lamp) and “safelock protection” which denies power if there is a ground
fault or if GFCI fails.
5.Extra heavy-duty use specification grade receptacles with stranded right angle plugtail connector.
6.Make: Pass & Seymour GFCI Receptacle PT2095 wi th plugtail connec tor PTRA6STR.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 8
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
C.Receptacle, Duplex:
1.Grounding type with brass integral ground system and auto ground clip, brass line contacts, brass
mounting strap and brass plugtail contacts.
2.High str ength nyl on cons truct ion for recept acle f ace and back body.
3.UL-listed, 20 amp circuit rat ing, NEMA Type 5-20R.
4.Extra heavy-duty use specification grade receptacles with stranded right angle plugtail connector.
5.Make: Pass & Seymour Duplex Receptac le PT5362A with plu gtail connector PT RA6STR.
2.11 WALL PLATES
A.Provide thermoplastic wall plates molded of rugged, practically indestructible, self-extinguishing nylon.
Wall plates shall be preferred for use in high-abuse applications.
B.Standard colors available in ivory, white, brown, gray, black, red and light almond. Color to be selected
by Architect, except where specifically shown.
C.Nominal thickness, 0.070".
D.Make: Pass & Seymour Trademaster Thermoplastic Wall Plates “TP” Series.
2.12 CEILING PLATES
A.Round ceiling plate, white finish, steel, to cover existing cast-in-place ceiling boxes.
B.Mulberry Model 40430 or equal.
2.13 NEW PRODUCTS, SINGLE MANUFACTURER
A.All equipment, materials and products furnished shall be new unless specifically shown to be reused. All
materials shall be new and of the best quality of their respective kinds. The work when completed will be
accepted in an undamaged and perfect condition only. Where equipment, materials and products are used
for the same purpose, they shall be provided by the same manufacturer.
2.14 QUALITY ASSURANCE
A.All equipment, material s and products shal l conform to the applic able ANSI, ASA, NFPA, UL, AGA
and/or ARI standard. All electrical equipment shall be UL or ETL Listed.
3.0 EXECUTION
3.01 CONDUCTORS
A.All wir e and ca ble sha ll be in stall ed in an approve d racew ay.
B.Provide wire and cable in conduit for all feeders, motor circuits, lighting circuits, receptacle circuits,
equipment circuits, etc., as shown on Drawings.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 9
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
C.Coil slack wire at outlets, inside the outlet boxes and seal the outlet opening with cardboard or fiber plug
to prevent entrance of concrete plaster or paint. Provide separate neutrals for all single phase circuits.
D.Tag all feeders, subfeeders, special system wiring and control wiring in each pullbox and gutter space,
denoting points of origin and termination of wires.
E.Install a maximum of 3 phase and one neutral conductor in any one feeder or branch circuit conduit
unless otherwise directed by Engineer.
F.Provide supports for conductors in vertical raceways in accordance with NEC, Article 300.19.
G.Flexible conduit used as connection to any equipment shall contain separate green grounding wire run
back to ground bus of serving panelboard.
H.Provide #12 AWG minimum size for branch circuit and emergency system wiring, #14 AWG minimum
size for signal circuits.
I.All wires #12 and larger and wiring to motor or other fixed equipment shall be stranded type.
J.Provide #10 minimum size for branch circuit run which exceed 100 feet; unless otherwise directed.
K.Included in the work covered under this section is the cutting or drilling of entrance holes into
enclosures, equipment terminal boxes and outlet boxes for entrance of cable not in conduit, as well as the
work of cutting and drilling of holes in miscellaneous plates located in the path of cable runs. Entrance
holes for cable shall be installed around cable, as part of the work of installing cable, sealing bushings,
Crouse-Hinds type: “CGB” or Owner approved equal, or conduit bushings where these alone are
permissible. The work shall also include the work of packing or sealing at conduit bushings after cables
are pulled, using unoiled Oakum and JM Dux-seal or Owner approved equal.
L.Cables shall be formed to avoid sharp bends or edges of conduit bushings upon entering or leaving
conduit terminations, and insulated wiring to approximately six inch intervals between conduit and
terminals. Where outlet box, cabinet, cubicle, switchgear or other terminal points for cable are equipped
with cable or wiring trays, troughs or gutters. Contractor shall pull sufficient length of each cable to
permit neat arrangement of all entering cables, with leads formed and cabled or clamped as each
conductor is brought to its terminal connection. No tangle box work will be accepted.
M.Where reasonably practicable, the minimum radius to which an insulated conductor is bent, whether
permane ntly or t emporar ily duri ng insta llati on, sha ll be te n times t he diamet er over t he oute r coveri ng.
N.Making terminal connections shall be included as part of the work, except as specifically noted. At points
where the conductor and cable insulation will be terminated, terminations shall be made in a neat,
workmanlike and approved manner by men specialized in this class of work, particular attention being
given to higher voltage terminations, shielded conductor terminations and coaxial cable terminations.
Terminations shall be made by the Contractor for each type of wire or cable in accordance with
instructions issued by the Owner. Spare cables shall be trimmed, taped and bundled neatly within the
cabinet so their presence will not interfere with connected terminations. They shall be trimmed to a
length such that they can be made up and connected to the farthest terminal block within the cabinet.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 10
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
O.Before any cable terminal connections are made, conductors shall be rung out. Connections shall be
made according to wiring diagrams. Polarity or phasing shall be checked before final connections are
made, and corrections of polarity, phasing or rotation shall be made without additional cost to the Owner.
P.Control cable terminations shall be made in accordance with wiring diagrams, using wire numbers
established by the Owner for the various control circuits. It is the intent that the Contractor shall
terminate the cables which he installs, except as specifically noted.
Q.When co ntrol cables are to b e fanne d out an d cable d togeth er with cord, Co ntrac tor sha ll make
connections to terminal blocks, and test equipment for proper operation before cables are corded
together. If there is any question as to proper connection, the Contractor shall make temporary
connection with sufficient length of cable so that cable can be switched to another terminal, without
splicing cable.
R.After pulling and splicing but before making cable terminal connections, the Contractor shall expose
ends, clear each conductor, and make the required Megger test on all circuits except lighting circuits.
Contractor shall test cables for motors, power, and control, with a Megger insulation testing instrument
(Associated Research, Inc., Megohmmeter) before equipment is energized. In the event insulation is
deficient, repeat Megger testing shall be accomplished after corrective measures have been applied.
Extreme care shall be exercised in meggering so as not to put excessive voltage on instrumentation and
electronic equipment and thereby damage such devices.
S.The Contractor shall megger all power feed cables for 10 to 15 sec., at 4000 volts on apparatus rated
2500 volts, 1000 volts on apparatus rated 550 volts to 2500 volts and 500 volts on apparatus rated less
than 500 volts. The cable shall be meggered first on the reel before pulling and then again on a
cable-by-cable basis after being cut and pulled.
T.A check shall be made of all external and internal wiring for loose connections, cable sizing and proper
terminations per the elementary and connection Drawings listed and attached with specification.
U.All wiring systems shall be thoroughly checked before placing the system in service, for grounds, short
circuits and conformity to wiring diagrams.
3.02 CONDUCTOR SPLICING MATERIALS
A.Splices and connections for lighting and receptacles shall be made in accessible outlets, pullboxes or
junction boxes.
B.Insulate all splices, taps and connections for lighting and receptacles with U.L. labeled gauge plastic tape
or molded composition caps.
C.Splices shall not be made except where called for by the Drawings, or where specifically permitted by the
Owner. Where splices are permitted, they shall be made in a neat, workmanlike and approved manner by
those specialized in this class of work, close attention being paid to all splices with particular attention to
splices on higher voltages. Splices shall be made by the Contractor for each type of wire or cable in
accordance with instruction issued by Cable Manufacturers and the Owner. Before splicing, insulated
cables shall have conductor insulation stepped and bound or penciled for recommended distances back
from splices to provide a long leakage path. After splicing, insulation equal to that on the spliced
conductors shall be applied at each splice. In baring conductors for splices, care shall be taken to avoid
nicking strands.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 11
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
3.03 CONDUCTOR CIRCUITING
A.Lighting, Receptacles and Special Circuits:
1.Lighting circuits: provide lighting arrangement as shown or 15 amperes maximum per circuit
where not otherwise shown.
2.Receptacle cir cuits: provide 5 con venience outlets maximum per circuit unless other wise shown
or specified.
3.Special receptacle circuits: provide as indicated on Drawings and as specified under special
items of equipment and provide separate green conductor for grounding receptacles to panel
ground bus.
4.Exits and emergency lighting circuits: install in separate conduit system and circuit to emergency
panel, as shown on Drawings.
5.Fir e ala rm and dete cti on ci rcui ts: inst all in se para te co ndui t sys tem.
B.Communications:
1.Provide all conduit, wireway, wire terminations, etc., necessary to provide for functions
specified.
a.All wiring shall be installed in conduit unless specified otherwise.
b.Cross-sectional area of all telephone and television cabling installed in a conduit shall
not exceed percentage of the cross-sectional area of the conduit as scheduled.
c.Cross-sectional area of all computer cabling installed in a conduit shall not exceed 20%
of the cross-sectional area of the conduit.
d.Provi de a s epar ate circ uit powe r sup ply f or ea ch sys tem.
e.Refer to Division 27 for additional requirements.
C.Power and Control Circuits:
1.General Requirements:
a.Provide all power wiring. Install in conduit and make all connections to disconnect
switches, motor controllers, motor and other items of electrical equipment shown on
Drawing details and schedules.
b.Provide control wiring only as shown on electric equipment schedule and plan details.
Install in conduit and make connections to motors, motor controllers, control devices,
etc., including the mounting of all control devices furnished by others.
c.Verify exact location and rating of all motors, controllers, control devices, etc., with
other contra ctors before roughin g.
d.Power and control wiring may be combined in common conduit by increasing conductor
or conduit sizes as required by code.
e.Provide minimum working clearances as requi red by NEC Article 110.16 and as shown
on the Drawings.
2.Wiring Diagrams:
a.Any wiring diagrams shown on Drawings for hookup of equipment furnished by others,
are app roximat e and ar e for bi dding pu rpose s only.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 12
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
b.Obtain wiring diagrams, certified correct for the job, from respective Contractor for all
equi pment and s yste ms fur nis hed b y them.
c.Install all work in accordance with certified wiring diagrams.
3.Control Devices:
a.Do not accept control devices from other Contractors unless they are properly tagged and
furnished with circuiting information.
3.04 CONDUITS
A.General:
1.Securely support conduit from building construction, separately from outlets and boxes which
are secured to the building. Supports shall be spaced at intervals of eight (8) feet maximum or as
required by NEC code.
2.Conduit runs shall be concealed unless otherwise specified. Do not expose in finished room
unless specifically permitted.
3.Conduit runs shall be exposed in electrical, mechanical and fan rooms.
4.Conduit runs shall be installed neatly and parallel to ceilings, walls, and floors.
5.All conduits and fittings on exposed work shall be secured by means of metal clips on back
plates.
6.Avoid installation adjacent to hot surfaces. Raceways shall be spaced from heat sources as
follows:
a.Steam: no conduit within 12 inches of outside surface of insulation.
b.Hot water piping: 6 inches minimum from outside surface of insulation.
7.Provide one pull box or junction box per three 90° bends in any one conduit run.
8.Plug openings until wire is installed and ream conduit joints and ends before installation. Wires
shall not be pulled until conduit system is completed in all details.
9.Conduits feeding panelboards; pull boxes:
a.Terminations at each pullbox, panelboard and switch board shall have double locknut
(one inside and one outside).
b.Provide a minimum of two 1 inch conduit stubs from each flush mounted panelboard to
an accessible ceiling space above the panel, in an adjacent area or at the ceiling line.
10.Conduit terminating in gasketed enclosures shall be terminated with conduit hubs or Myers hubs.
11.Avoid installing conduits in water or where excessive moisture exists. For conduits terminating
to boxes in wet areas, use Myers hub fittings.
B.EMT:
1.Use in dr y locati ons for concea led or e xposed work.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 13
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
C.Liquidtight Conduit:
1.Use for terminating connection for motors, compressors, air conditioners, sound equipment and
dry type transformers.
2.Provide proper fittings with insulated throats. Provide green wire ground.
3.Use Liquidtight conduit and fittings in outdoor locations and in pump rooms, garages, elevator
pits and other locations subjected to moisture.
4.Use for all motor transformer terminations and other equipment where vibration is present.
D.Flexible Metal Conduit:
1.Install as terminating connection for motors, compressors, air conditioners, sound equipment and
dry type transformers in dry areas as shown or scheduled.
2.Install green wire ground in all flexible conduit.
3.05 CABLE LUBRICATION AND LUBRICANT
A.The cable jacket and/or conduit walls shall be completely lubricated when cable is pulled into conduit.
The lubricant shall be applied immediately before or during the pull.
B.Minimum quantities of lubricant are as follows:
1.1 quart of lubricant per 100 feet of 1 inch conduit.
2.2 quarts of lubricant per 100 feet of 2 inch conduit.
3.3 quarts of lubricant per 100 feet of 3 inch conduit.
4.1 gallon of lubricant per 100 feet of 4 inch conduit.
C.This quantity shall be increased as needed for difficult pulling situations (high temperatures, multiple
bends, poorly placed conduit, etc.)
D.Cable attachments for pulling shall be patent cable grips, or other devices subject to the Owner’s
approval. In using woven basket type grips on covered cable, care shall be taken to avoid damage to the
cable and seal, which shall be marked up and maintained during cable installation. Difficult pulling is not
anticipated; if unduly difficult pulling occurs, the Contractor shall check pull required and suspend
further pulling until further procedure has been approved by the Owner. Maximum pull tension shall not
exceed recommended value for the cable when measured by tension dynamometer.
E.Cable pulling during low temperatures is subject to review by the Owner and shall be discontinued when,
in the Owner’s and Engineer’s opinion, the cable may be damaged.
F.The Contractor shall keep records of all cables pulled, meggered and terminated. Exact lengths of cables
installed shall be supplied to the Owner.
3.06 CONDUIT FITTINGS
A.EMT:
1.Provide EMT connector and nylon bushing at all EMT plain end terminations for power, CATV,
communications and computer.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 14
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
2.Use set screw type, concrete tight indoors, dry locations.
3.Use compression connectors, squeeze type in wet locations.
3.07 CONDUIT HANGERS
A.General:
1.Investigate thoroughly, Architectural and Shop Drawings related to work, to determine how
equipment, fixtures, piping, ductwork, etc, are to be supported, mounted or suspended. Provide
extra steel, bolts, inserts, pipe stand brackets, or any other items required for proper support.
Provide supporting accessories where required, whether or not shown on the Drawings. Where
directed, furnish Drawings showing supports, etc., for approval.
2.Conduit hanger rods in areas where hot dipped galvanized conduit is installed shall be galvanized
steel, sprayed with one coat of Rustolium paint.
3.Size support member within load rating of member section, and without visible deflection.
4.Mount conduit on top of support member unless space considerations prevent installation; use
conduit clamps.
5.Provide channels for racking up conduit, trapeze, suspensions, cable racks, panel racks, etc., as
shown and as required and provide poured-in-place inserts for supporting channels.
B.Conduit Clamps:
1.Single conduits shall be supported by means of one-hole pipe clamps in combination with
one-screw back plates to raise conduits from the surface.
C.Trapeze Hangers:
1.Multiple runs of conduits shall be supported by means of trapeze hangers, keeping conduits as
high as possible with minimal beads and offsets in height.
3.08 ACCESS DOORS
A.Provide where indicated and where required for access to all equipment. Size 16" x 24" unless otherwise
noted. It is to be noted that various type frames are required for specific wall and ceiling finishes. Any
door having an area exceeding 324 square inches shall have two (2) camlocks. Employ and pay General
Contractors for installation. Milcor or approved equal.
3.09 SURFACE RACEWAYS
A.Surface Raceways:
1.Blank cover raceways shall be provided where shown, or as approved in advance by the
Engineer.
2.Secure to structure at 5 feet intervals.
3.All surface boxes to be independently secured to structure.
4.Provide separate green grounding wire within each surface raceway and extend back to ground of
serving panelboard.
5.Paint all raceways to match adjacent walls.
CORNELL DIVISION 26 - ELECTRICAL
Ithaca, New York SECTION 26 05 00 - ELECTRICAL BASIC MATERIALS & METH ODS
CLARA DICKSON HALL ELECTRICAL BASIC MATERIAL & METHODS 26 05 00 - 15
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
B.Pre-Wir ed and M ulti-Co mponent Raceway:
1.Install in strict accordance with manufacturer’s instructions.
2.Raceway shall be cut to a smooth, even surface.
3.Connec tors s hall be insta lled a t feed points in the ba se or in the end cap fit ting.
4.Raceway base section shall be fastened to wall via drilled holes (screws not provided). Fasteners
shall be installed 1" from end of each section, then approximately every 16".
3.10 RECEPTACLES
A.All devices shall be mounted within a steel box.
B.All receptacles shall be mounted with box aligned in a vertical direction with ground slot at bottom of
receptacle. In those areas where vertical space is not available such as under fin radiation, cabinets and
above backsplash, mount horizontally with ground slot at right.
3.11 WALL PLATES
A.Submit samples as requested by Architect/Engineer.
B.Provide special plates fabricated for devices shown ganged together at one location and provide special
engraving for switch plates covering special utility switches as shown on Drawings.
C.Special finish plates will be required where so noted on Drawings or included in Specifications. Sample
of finishes will be furnished to Architect/Engineer for approval when so requested.
D.Provide blank matching coverplates for outlets not used.
E.Coverplates for telephone, dimmer controls, etc., shall match device plates in each area.
3.12 OUTLET, JUNCTION AND PULLBOXES
A.Flush recessed wherever possible and securely supported from building construction.
B.Where outlet boxes are installed in exposed block walls, locate at corner of block. Locate conduit as
required to meet block conditions. Coordinate with other Divisions.
C.Identify junction boxes for particular service such as power, lighting, fire alarm, etc. Label with suitable
tags or u se ste ncil l etter ing.
D.Locate where shown or required for outlet facilities and where shown or required for installing wire or
cable. Make accessible after completion of construction; Electric Contractor shall be responsible for
coordination with other divisions. Junction and pullboxes shall not be located in finished room unless
specifically permitted.
E.Mounting height of boxes shall be as scheduled.
***END OF SECTION 26 05 00***