SECTION 26 0519

LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

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LANL MASTER SPECIFICATION

This template must be edited for each project.  In doing so, specifier
must add job-specific requirements.  Brackets are used in the text to
indicate designer choices or locations where text must be supplied by
the designer.  Once the choice is made or text supplied, remove the
brackets.  The specifications must also be edited to delete
specification requirements for processes, items, or designs that are not
included in the project \-- and specifier's notes such as these.  To
seek a variance from requirements in the specifications that are
applicable, contact the Engineering Standards Manual Electrical
[POC](http://engstandards.lanl.gov/engrman/7elec/htmls/elecnew2.htm).
Please contact POC with suggestions for improvement as well.\
\
When assembling a specification package, include applicable
specifications from all Divisions, especially Division 1, General
requirements.\
\
Specification developed for ML-4 projects.  For ML-1, 2, and 3
applications, additional requirements and independent reviews should be
added if increased confidence in procurement or execution is desired;
see ESM Chapter 1 Section Z10 Specifications and Quality Sections.\
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1.  GENERAL

    1.  SECTION INCLUDES

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Edit article to match Project requirements. Delete items not applicable
to Project.

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A.  Building wire

B.  Metal-clad cable

C.  Wire and cable connectors

D.  Insulating tape and tubing

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2.  LANL Performed Work

    A.  None

3.  QUALITY ASSURANCE

    A.  Comply with the *National Electrical Code* (NEC) for components
        and installation.

    B.  Provide products that are listed and labeled by a Nationally
        Recognized Testing Laboratory (NRTL) for the application and
        environment in which installed.

4.  Receiving, Storing and Protecting

    A.  Receive, store, and protect, and handle products according to
        NECA 1, *Standard Practices for Good Workmanship in Electrical
        Construction*.

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2.  PRODUCTS

    1.  PRODUCT OPTIONS AND SUBSTITUTIONS

        A.  Refer to Section 01 2500, "Substitution Procedures."

    2.  BUILDING WIRE

        A.  Provide building wire as shown on the Drawings with the
            following characteristics:

            1.  Description: Single conductor insulated wire.

            2.  Conductor: 98% conductivity, annealed, uncoated copper,
                solid or stranded as specified in Part 3 of this
                Section.

            3.  Insulation: The following types, rated 600 volts:

                a.  2 AWG and smaller, Type THHN/THWN per UL Standard
                    83, "*Thermoplastic-Insulated Wires and Cables*."

                b.  1 AWG and larger, Type THHN/THWN per UL Standard 83
                    or Type XHHW per UL Standard 44,
                    "*Thermoset-Insulated Wires and Cables*."

        B.  Color code conductors as follows:

            1.  Use colored insulation for color coding conductors 6 AWG
                and smaller.

            2.  Use water and oil resistant colored plastic adhesive
                tape, 3/4 inch minimum width, for color coding conductor
                4 AWG and larger. Manufacturer: 3M "Scotch 35\"

            3.  Provide black conductor insulation where colored tape is
                used for color coding.

            4.  Use the following color codes for AC power system
                conductors:

+----------------+----------+----------+---------------+-------------+
| System         | 4        | 2        | 208Y/120V     | 120/240V    |
| Voltage:       | 80Y/277V | 08Y/120V | Isolated      |             |
|                |          |          | Ground        |             |
| Conductor:     |          |          |               |             |
+----------------+----------+----------+---------------+-------------+
| Phase A:       | Brown    | Black    | Black         | Black       |
+----------------+----------+----------+---------------+-------------+
| Phase B:       | Orange   | Red      | Red           | Red         |
+----------------+----------+----------+---------------+-------------+
| Phase C:       | Yellow   | Blue     | Blue          | \-\--       |
+----------------+----------+----------+---------------+-------------+
| Grounded       | Gray     | White    | White         | White       |
| (Neutral):     |          |          |               |             |
|                |          |          | White/Red\*   | W           |
|                |          |          |               | hite/Blue\* |
+----------------+----------+----------+---------------+-------------+
| Equipment      | Green    | Green    | Green         | Green       |
| Grounding:     |          |          |               |             |
+----------------+----------+----------+---------------+-------------+
| Isolated       | \-\--    | \-\--    | Green/Yellow  | \-\--       |
| Ground:        |          |          |               |             |
+----------------+----------+----------+---------------+-------------+
| Switched:      | Purple   | Pink     | \-\--         | Blue        |
+----------------+----------+----------+---------------+-------------+

\* Provide grounded conductor insulation with colored stripe when
installed in any raceway, box, or enclosure with wiring of another
system voltage.

5.  Use the following color codes for DC power system conductors:

> Positive: Red
>
> Negative: Black

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Edit the following Article to match Project requirements. Delete if not
applicable to Project.

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6.  In existing facilities, change color coding of existing service,
    feeder, and major branch circuits (50 amps and larger) to match the
    above color code.

7.  Provide color code for control conductors as indicated on equipment
    or control system manufacturer's drawings.

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3.  METAL-CLAD CABLE

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Type MC cable may be used in IBC Business Group B occupancies for 15 and
20 ampere branch circuit wiring systems beyond the first outlet box.
Refer to Section D5020 in the LANL Engineering Standards for additional
information. Delete this article when Type MC is not used.

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A.  Provide metal-clad cable (Type MC) that complies with UL Standard
    1569 -- *Metal-Clad Cables*, the NEC, and this Section.

B.  Metal-clad cable shall consist of THHN insulated solid copper
    circuit conductors, an insulated solid copper equipment grounding
    conductor, a Mylar wrapping around the conductor bundle, and a close
    fitting aluminum or galvanized steel outer sheath.

C.  Provide minimum 12 AWG conductors in Type MC cables.

    1.  Provide larger conductor sizes as required to limit branch
        circuit voltage drop to 3 percent at the full connected load.

    2.  Use larger conductor sizes to adjust allowable ampacity if there
        are more than 3 current-carrying conductors in a cable.

    3.  For isolated ground power circuits provide Type MC cables with a
        separate neutral conductor for each phase conductor; uniquely
        identify each neutral with a colored stripe on the white
        insulation corresponding to the phase conductor insulation
        color.

D.  Provide MC cables with the same conductor color coding as specified
    for BUILDING WIRE.

E.  Metal-clad cable manufacturer: AFC Cable Systems Inc.

F.  Provide NRTL listed, insulated throat, snap-in steel box connectors
    for Type MC cables. Manufacturer: O-Z/Gedney ETP "Speed-Lock".

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4.  WIRING CONNECTORS

    A.  For splices and taps on wire sizes 8 AWG and smaller use
        insulated, spring type connectors, rated 600 volts and 105 ºC
        that meet the requirements in UL 486C, *Splicing Wire
        Connectors*. Manufacturer: 3M "Scotchlok"

    B.  For splices and taps on wire sizes 6 AWG through 1 AWG use the
        following materials:

        1.  Tin-plated copper split-bolt connectors that meet the
            requirements in UL 486A-486B, *Wire Connectors*; provide
            with matching 600-volt snap-on insulating cover.
            Manufacturer: FCI Burndy "Type KSA" with "Type SC"
            insulating cover.

        2.  Multi-tap connectors that meet the requirements of UL
            486A-466B that have two or more range-taking mechanical lugs
            and matching 600-volt insulated cover. Manufacturers: Burndy
            "UNITAP", Ilsco "Type PCT".

    C.  For wire sizes 1/0 AWG and larger use NRTL listed
        circumferential compression terminals, splices, or adapters.

        1.  Provide compression terminals and splices made from
            electro-tin plated seamless copper tubing and marked with
            cable accommodation, die codes and crimp locations.
            Manufacturer: FCI Burndy Types "YA", "YA-L", "YA-L-NT",
            "YS", and "YC-C."

        2.  Provide straight and offset compression adapters made from
            electro-tin plated aluminum, NRTL listed for use on copper
            conductors, and marked with cable accommodation, die codes
            and crimp locations. Each adapter shall include a 600 V, 90
            degree C rated insulating cover. Manufacturer: FCI Burndy
            Types "AYP" and "AYPO."

    D.  For control wiring use nylon insulated crimp-on terminals that
        meet the requirements of UL 486A-486B with insulation grip and
        brazed seam. Manufacturer: 3M type "MNG"

        1.  Use ring tongue terminals for nutted studs.

        2.  Use flanged fork terminals for barrier terminal strips.

        3.  Use pin terminals for DIN type terminal blocks.

    E.  Insulation-piercing type connectors are not acceptable for power
        or control wiring.

5.  INSULATING TAPE AND TUBING

    A.  Provide vinyl plastic tape that meets the requirements of UL
        510 - *Polyvinyl Chloride, Polyethylene, and Rubber Insulating
        Tape* and has the following characteristics:

        1.  8.5 mil minimum thickness,

        2.  ASTM D-3005, "Standard Specification for Low-Temperature
            Resistant Vinyl Chloride Plastic Pressure-Sensitive
            Electrical Insulating Tape -- Type 1."

        3.  Rated 600 volts and 105 ºC, suitable for indoor and outdoor
            applications.

        4.  Retains flexibility, adhesion, and applicable at temperature
            ranges from 0 through 100 ºF without loss of physical or
            electrical properties.

        5.  Resistant to abrasion, moisture, alkalis, acid, corrosion,
            and sunlight.

        6.  Manufacturer: 3M "Scotch Super 88"

    B.  Provide heat shrinkable tubing that meets the requirements of UL
        486D -- *Sealed Wire Connector Systems* and has the following
        characteristics:

        1.  Rated 600 volts

        2.  Factory applied adhesive/sealant

        3.  Split resistant

        4.  Manufacturer: 3M "ITCSN"

    C.  Use motor lead splicing kits to insulate and seal connections to
        leads for motors rated 480V and less. Manufacturer: 3M "5300
        Series"

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1.  WIRE PULLING LUBRICANT

    A.  Provide wire pulling lubricant that is non-flammable, compatible
        with conductor insulation, has a maximum coefficient of friction
        of 0.055, and is stable up to a temperature of 180 ºF. For cold
        weather installations, provide wire pulling lubricant suitable
        for conduit temperature.

    B.  Compatibility with conductor insulation shall be determined in
        accordance with IEEE Std 1210, *Standard Tests for Determining
        Compatibility of Cable-Pulling Lubricants with Wire and Cable*.

    C.  Manufacturer:

        1.  For conduit temperature above freezing: IDEAL "Yellow 77
            Plus\" or "ClearGlide."

        2.  For conduit temperature below freezing: IDEAL "AquaGel CW."

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3.  EXECUTION

    1.  EXAMINATION

        A.  Verify interior of building has been protected from weather.

        B.  Verify that work of other trades likely to damage wire and
            cable has been completed.

        C.  Verify raceway installation is complete and supported.

        D.  Verify that field measurements are as shown on Drawings.

        E.  Wire and cable routing shown on Drawings is approximate
            unless dimensioned.

            1.  Route wire and cable as required meeting project
                conditions.

            2.  Where wire and cable routing is not shown, and
                destination only is indicated, determine exact routing
                and lengths required to meet project conditions.

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    1.  PREPARATION

        A.  Examine raceways and building finishes that are to receive
            wires and cables for compliance with installation tolerances
            and other conditions. Do not proceed with installation until
            unsatisfactory conditions have been corrected.

        B.  Completely and thoroughly swab raceway before installing
            wire.

        C.  Store cable for 24 hours in the installation area ambient
            temperature before installing.

    2.  EXISTING WORK

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Delete this article when existing construction is not affected.

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A.  Remove exposed abandoned wire and cable, including abandoned wire
    and cable above accessible ceiling finishes. Patch surfaces where
    removed cables pass through building finishes.

B.  Disconnect abandoned circuits and remove circuit wire and cable.
    Remove abandoned boxes when wire and cable servicing boxes are
    abandoned and removed. Install blank cover for abandoned boxes not
    removed.

C.  Provide access to existing wiring connections remaining active and
    requiring access. Modify installation or install access panel.

D.  Extend existing circuits using materials and methods as specified.

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3.  Building Wire Installation

    A.  Install building wire according to NECA 1 *Standard Practices
        for Good Workmanship in Electrical Construction*, the NEC, and
        requirements in this Section.

    B.  Use solid conductors for power circuits 10 AWG and smaller
        except use stranded conductors in flexible conduits.

    C.  Use stranded conductors for power circuits 8 AWG and larger.

    D.  Use stranded conductors for control circuits.

    E.  Use conductors not smaller than 12 AWG for power and lighting
        circuits.

    F.  Use conductors not smaller than 14 AWG for 120V control
        circuits.

    G.  Use conductors not smaller than 16 AWG for 24V control circuits.

    H.  Use minimum 10 AWG conductors from panelboard to first outlet
        for 20-ampere, 120-volt branch circuits longer than 75 feet; use
        larger conductors as indicated on the Drawings.

    I.  Use minimum 10 AWG conductors from panelboard to first outlet
        for 20-ampere, 277-volt branch circuits longer than 150 feet;
        use larger conductors as indicated on the Drawings.

    J.  Do not "through-pull" conductors at boxes, fittings or cabinets
        where a change of raceway alignment occurs.

    K.  Install wiring at outlets with at least 6 inches of slack
        conductor at each outlet.

4.  Connector Installation

    A.  Install connectors in accordance with the manufacturer's
        instructions. Have the manufacturer's installation instructions
        available at the construction site.

    B.  Do not nick conductors when removing insulation.

    C.  Clean conductor surfaces before installing terminals and
        connectors.

    D.  Do not cut conductor strands to fit into connectors or
        terminals.

    E.  Make splices, taps, and terminations to carry full ampacity of
        conductors with no perceptible temperature rise above the
        conductor temperature.

    F.  Terminate conductors 1/0 AWG and larger using compression
        terminals at the following locations. Install using
        manufacturer's recommended hydraulic compression tools and dies:

        1.  Circuit breakers with frame size greater than 100 amperes
            that are NRTL listed for compression terminals and where
            adequate wire bending space exists to accommodate
            compression terminals.

            a.  Use NEC Article 312 to determine required wire bending
                space.

            b.  Use compression adapters where the circuit breaker is
                not listed for compression terminals or where there is
                insufficient wire bending space for compression
                terminals.

            c.  Use mechanical lugs where there is insufficient wire
                bending space for either compression terminals or
                compression adapters.

            d.  Use mechanical lugs on 100 ampere frame circuit
                breakers.

        2.  Safety switches greater than 100 amperes; at 30, 60, and 100
            ampere safety switches use mechanical lugs.

        3.  Transformers; refer to Section 26 2213, "Low-voltage
            Distribution Transformers."

        4.  Switchgear, switchboard, panelboard, busway, and motor
            control center main lugs.

        5.  Switchgear, switchboard, panelboard, and motor control
            center main circuit breakers.

        6.  Feeder and branch circuit connections in switchgear and
            switchboards.

    G.  Terminate control conductors using crimp-on terminals. Do not
        place bare stranded conductors directly under terminal screws.

    H.  Connect outlets and components to wiring and to ground as
        indicated and instructed by manufacturer. Tighten connectors and
        terminals, including screws and bolts, according to equipment
        manufacturer\'s published torque‑tightening values for equipment
        connectors. Where manufacturer\'s torque requirements are not
        indicated, tighten connectors and terminals according to
        tightening torques specified in UL Standard 486A-486B.

5.  INSULATING TAPE AND TUBING Installation

    A.  Insulate splices and taps of irregular shapes with manufactured
        insulating covers or vinyl tape built up to not less than 150
        percent of insulation rating of conductor.

    B.  Insulate cylinder shaped splices and taps, connector barrels and
        adapter barrels using heat shrinkable insulating tubing or
        insulating covers manufactured for the connector.

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Delete this article when Type MC Cable is not used. Note that use of
Type MC Cable at LANL is restricted to International Building Code
"Business Group B" occupancy. Refer to Section D5020 in the LANL
Engineering Standards for additional information.

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6.  TYPE MC CABLE INSTALLATION

    A.  Install MC cables according to NECA 120, *Standard for
        Installing and Maintaining Armored Cable (Type AC) and
        Metal-Clad Cable (Type MC)* (ANSI), the NEC, and requirements in
        this Section.

    B.  Route MC cables to meet Project conditions.

    C.  Use Type MC cables for 15- and 20-ampere branch circuit wiring
        beyond the first outlet or junction box; however, use conduit
        for the "homerun" from the first outlet or junction box to the
        branch circuit panelboard.

    D.  Use Type MC cables in interior, dry locations that are
        classified by the International Building Code as "Business Group
        B" occupancy where they will be concealed above ceilings, in
        dry-wall partitions, in equipment enclosures, or below raised
        floors. Type MC cables may be installed exposed in dedicated
        electrical rooms and mechanical rooms if they will not be
        exposed to physical damage or deteriorating agents.

    E.  Install and support Type MC cables as required in Article 330 of
        the NEC. Use NRTL listed spring steel MC cable supports or UV
        resistant plastic tie wraps to support Type MC cables; do not
        use wire to support Type MC cables

7.  Identification

    A.  Identify wire and cable under provisions of Section 26 0553,
        Identification for Electrical Systems.

    B.  Identify each conductor with its circuit number or other
        designation indicated on Drawings.

    C.  Apply color coding tape on conductors at each termination,
        splice, junction, and pull box.

    D.  Post conductor color code on each panelboard, switchboard,
        switchgear assembly, motor control center, dry-type transformer,
        safety switch, and separate motor controller. Use type-written,
        adhesive-backed labels

8.  FIELD QUALITY CONTROl

    A.  Upon installation of wires and cables and before electrical
        circuitry is energized, show product capability and compliance
        with requirements and verify by testing that conductors are free
        from shorts and unintentional grounds.

    B.  Perform the following inspections and tests:

        1.  Inspect wire for physical damage and proper connection
            according to the Drawings.

        2.  Measure tightness of mechanical connections and compare
            torque measurements with manufacturer\'s recommended values.
            Use a calibrated torque wrench.

        3.  Check for correct conductor color coding according to
            Specifications.

    C.  Perform the following electrical tests:

        1.  Use an ohmmeter to verify the insulation of each service,
            feeder and critical branch circuit conductor with respect to
            ground and other conductors in the same raceway. (A critical
            branch circuit is one providing power to a fire alarm
            system, emergency lighting system, or safety system.)

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        1.  Test continuity of each power circuit conductor.

        2.  Test continuity of each control circuit conductor.

    D.  Remove and replace defective conductors and retest.

    E.  Refer to Section 26 0813, Electrical Acceptance Testing for
        other inspections and tests that are required before conductors
        may be energized.

END OF SECTION

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Do not delete the following reference information:

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FOR LANL USE ONLY

This project specification is based on LANL Master Specification 26
0519, Rev. 3, dated July 23, 2008.