Download Cable, Wire and Connectors, 600 Volt

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SECTION 26 05 19 – CABLE, WIRE AND CONNECTORS, 600 VOLT
PART 1 - GENERAL
1.01
RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General Conditions and Division
01 Specification Sections, apply to this Section.
B. Specifications throughout all Divisions of the Project Manual are directly applicable to this
Section, and this Section is directly applicable to them.
1.02
SUMMARY
A. This Section specifies the requirements for 600-volt cable, wire and connectors. It consists of
but is not limited to power distribution circuitry, control system circuitry, lighting circuitry,
appliance, equipment and motor-branch circuitry and outdoor power and lighting circuitry.
1.03
REFERENCE STANDARDS
A. The latest published edition of a reference shall be applicable to this Project unless identified
by a specific edition date.
B. All reference amendments adopted prior to the effective date of this Contract shall be
applicable to this Project.
C. All materials, installation and workmanship shall comply with the applicable requirements and
standards addressed within the following references:
1. NEMA WC 3: Rubber-Insulated Wire and Cable for the Transmission and Distribution of
Electrical Energy.
2. NEMA WC 5: Thermoplastic-Insulated Wire and Cable for the Transmission and
Distribution of Electrical Energy.
3. Where application of National Electrical Code, appears to be in conflict with the
requirements of this section, the Owner shall be asked for an interpretation.
1.04
SUBMITTALS
A. Product Data:
1. Submit manufacturer’s data on cable and wire connectors.
1.05
DELIVERY, STORAGE AND HANDLING
A. Provide factory-wrapped waterproof flexible barrier material for covering wire and cable wood
reels, where applicable; and weather resistant fiberboard containers for factory-packaging of
cable, wire and connectors, to protect against physical damage in transit. Damaged cable,
wire or connectors shall be removed from the Project Site.
B. In their factory-furnished coverings, store cable, wire and connectors in a clean, dry indoor
space which provides protection against the weather.
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MD ANDERSON Project No. XX-XXXX
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PART 2 - PRODUCTS
2.01
GENERAL
A. All materials shall meet or exceed all applicable referenced standards, federal, state and local
requirements, and conform to codes and ordinances of authorities having jurisdiction.
B. Provide factory-fabricated wire of the size, rating, material and type as indicated for each
service. Where not indicated, provide proper selection as required to comply with installation
requirements and with NEC standards. The minimum size wire to be used for power or
lighting circuits shall be #12 copper stranded with insulation as noted below. Minimum size
for control circuits shall be #14 copper stranded.
2.02
MANUFACTURERS
A. Interstate Wire Company.
B. American Insulated.
C. Okonite.
D. Southwire.
E. Encore Wire.
2.03
BUILDING WIRE
A. NEMA WC 70 – Nonshielded 0-2kV Cables
B. Feeders and Branch Circuits all sizes: 98 percent conductivity copper, stranded conductor,
600-volt insulation, THHN/THWN. Use XHHW insulation for all isolated power circuits.
C. Control Circuits: 98 percent conductivity copper, stranded conductor, 600 volt insulation,
THHN, THWN.
D. Color Coding:
1. Branch Circuit and Feeders:
Phase A
Phase B
Phase C
Neutral
Ground
280Y/120 Volts
Black
Red
Blue
White with tracer
Green
480Y/277 Volts
Yellow
Brown
Orange
Gray with tracer
Green
120/240 Volts
Black
Red
---White with tracer
Green
2. The above colors shall be used unless requirements of code require different colors.
When connecting to existing circuits, existing color coding shall be utilized. The neutral
tracer color shall match the phase conductor color that it is associated with. Lighting
circuits with shared grounding conductor are not required to have tracer colors on the
wire.
3. Secondary conductors from isolation transformers shall be:
conductor 2-brown.
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4. Conductors No. 8 AWG and larger shall be identified by colored plastic tape that marches
the circuit phase color at all visible points when colored insulation is unavailable. Colored
tape shall be located and of such a quantity to readily indicate the conductor phase.
E. Type AC and MC cable assemblies shall be permitted only with proper cable management
via cable trays and with Owner’s prior written approval.
2.04
REMOTE CONTROL AND SIGNAL CABLE
A. Control Cable for Class 1 Remote Control and Signal Circuits: 98 percent conductivity
copper conductor, 600-volt insulation, rated 60 degrees C, individual conductors twisted
together, shielded and covered with a PVC jacket.
B. Control Cable for Class 2 or Class 3 Remote Control and Signal Circuits: 98 percent
conductivity copper conductor, 300-volt insulation, rated 60 degrees C, individual conductors
twisted together, shielded and covered with a nonmetallic jacket; UL listed for use in air
handling ducts, hollow spaces used as ducts, and plenums.
PART 3 - EXECUTION
3.01
PREPARATION
A. Installer must examine the areas and conditions under which cable, wire and connectors are
to be installed and notify the Contractor and Owner in writing of conditions detrimental to the
proper and timely completion of the work.
B. Inspect wire and cable for physical damage.
unsatisfactory conditions have been corrected.
3.02
Do not proceed with the work until
INSTALLATION
A. Installation shall meet or exceed all applicable federal, state and local requirements,
referenced standards and conform to codes and ordinances of authorities having jurisdiction.
B. All installation shall be in accordance with manufacturer’s published recommendations.
C. General wiring methods:
1. Install electrical cable, wire and connectors as indicated. All installations, temporary or
permanent, shall be in accordance with the manufacturer’s written instructions, the
applicable requirements of NEC, and as required ensuring that products serve the
intended functions.
2. Coordinate cable and wire installation work with electrical raceway and equipment
installation work, as necessary for proper interface.
3. Cables shall be selected on the basis of their purpose and UL listing. Generally, use
Types THWN, XHHW and THNN in building interiors and other dry locations. Outdoors
and in underground in raceways, use Type THWN or THHN. Conductors subject to
abrasion, such as in lighting poles, shall be Type THWN or THHN.
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MD Anderson Cancer Center
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CABLE, WIRE AND CONNECTORS, 600 VOLT
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MD ANDERSON Project No. XX-XXXX
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4. No conductor smaller than No. 12 wire shall be used for branch circuit wiring. In the case
of “homeruns” over 50 feet in length (100 feet for 277 volt), no conductor smaller than a
No. 10 wire shall be used. The tap conductor from the J-box in the ceiling to the
receptacle may be No. 12. Each 120-volt phase conductor shall have a neutral
conductor of the same size. The sizing of all wire except remote control wire shall be
accomplished in the case of both feeder and branch circuits by conforming to the
following provisions.
a. 480 Volt Branch Circuits: The voltage drop in the case of 277/480 volt circuits shall
not exceed 1.0 percent at maximum load and 70.0 percent power factor.
b. 120/208 Volt Branch Circuits: The voltage drop in the case of 120/208 volt circuits
shall not exceed 2.0 percent at maximum load and 70.0 percent power factor.
5. Remote control wires shall be no smaller than No.14 AWG stranded copper conductors
and shielded with drain. Control wires shall be run in separate conduits. Departures
from the sizes so determined shall be made only in those cases in which the National
Electrical Code requires the use of larger conductors. The sizes as determined from
these tables shall be regarded as the acceptable minimum under all other circumstances.
In no case, however, shall there be a voltage drop greater than that specified in any
feeder or branch circuit. This voltage drop shall be based on the full load, 70 percent
power factor, the total impedance drop with 60-hertz alternating current and with the
reactance drop in the respective metal conduits duly considered. The Contractor may, if
Contractor deems it necessary or advisable, use larger sized conductors than those
shown. Under no circumstances, however, shall the Contractor use any conductors
sized in a manner which does not conform to the above mentioned tables without having
first secured the written approval of the Owner’s duly authorized representative.
D. Wiring Installation Raceways:
1. Wire and cable shall be pulled into clean dry conduit.
2. Pull conductors together where more than one is being installed in a raceway.
3. Use UL listed pulling compound or lubricant, when necessary; compound must not
deteriorate conductor and insulation. No pulling compound shall be used when pulling
isolated power circuits utilizing XHHW insulation.
4. Install wire in raceway after interior of building has been physically protected from the
weather and all mechanical work likely to injure conductors has been completed. Wires
with damaged insulation shall be replaced at no cost to the Owner.
5. Place an equal number of conductors for each phase of a circuit in same raceway.
6. No more than three phase conductors shall be installed in same conduit.
conductors shall not share the same conduit with load conductors.
Line
E. Wiring Connections and Terminations:
1. Splicing cable or wire is not allowed unless it is explicitly designed by the Engineer, or for
equipment connection per equipment manufacturer’s recommendation. Where splices
are to be implemented, approval of the Owner must be obtained before installation is
made. Provide electrical boxes where splices are made.
2. Thoroughly clean wires before installing lugs and connectors.
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MD ANDERSON Project No. XX-XXXX
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3. Terminate indoor spare conductors with electrical tape in a box.
4. Conductors installed outdoors or in garages, whether in use or spare, shall be installed in
conduits and terminated in boxes that are rated for outdoor use with listed connectors
that are rated for watertight/rain tight applications. The use of indoor wire nuts with
electrical tape is prohibited for installations outdoors or in garages.
F. Field Quality Control:
1. Torque test conductor connections and terminations to manufacturer’s recommended
values.
2. Perform continuity test on all conductors. Verify proper phasing connections and phase
rotation, where applicable.
3. Conductors in vertical conduits or raceways shall be supported in the manner set forth in
the appropriate section of the latest revision of the National Electrical Code. Lighting
fixtures shall not be used for raceways for circuits other than series wiring of fixtures.
4. Conductors may be run parallel on sizes 1/0 to 500 kcMIL inclusive provided all parallel
conductors are the same size manufacturer, length and type of insulation. Except as
otherwise shown on Drawings, no more than three (3) conductors may be run in parallel,
and they shall be so arranged and terminated as to ensure equal division of the total
current between all conductors involved. Where parallel connection is contemplated,
approval of the Owner must be obtained before installation is made.
3.03
TESTING
A. Before final acceptance, the Contractor shall make voltage, insulation and load tests,
necessary to demonstrate to the Owner the satisfactory installation and proper performance
of all feeder circuits.
B. Test feeder conductors to determine the conductors are clear of faults, high resistance
connections and megger test same at 600 volts DC. Test results below 30 mega ohms shall
be cause for rejection of the wiring installation. Replace and retest all such rejected
conductors.
END OF SECTION 26 05 19
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