26 05 19.00 26 R0002.pdf

CJD Excitation Units 1 – 16 Replacement 21050 Bridgeport, WA W912DW24R0001

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 05 19.00 26

INSULATED WIRE AND CABLE

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

1.2 REFERENCES

1.3 SUBMITTALS

1.4 DELIVERY, STORAGE, AND HANDLING

1.5 INSPECTION AND TESTS

1.5.1 General

1.5.2 Flame Tests

1.5.3 Independent Tests

PART 2 PRODUCTS

2.1 INSULATED WIRE AND CABLE

2.1.1 General

2.1.2 Wire and Cable Schedule

2.1.3 Governing Standards

2.2 MATERIALS

2.2.1 Submittal Requirements

2.2.2 Rated Circuit Voltages

2.2.3 Conductors

2.2.3.1 Material for Conductors

2.2.3.2 Wire Size

2.2.3.3 Stranding

2.2.4 Insulation

2.2.4.1 Insulation Voltage Rating and Insulation Level

2.2.4.2 Insulation Material

2.2.4.3 Insulation Thickness

2.2.4.4 Insulation Shielding

2.2.5 Jackets

2.2.5.1 Jacket Material

2.2.5.2 Jacket Thickness

2.2.6 Cabling

2.2.7 Dimensional Tolerance

2.2.8 Color-Coding

2.3 SPECIAL WIRE AND CABLE

2.3.1 Control Panel Shop Wiring

2.3.2 Switchboard Wire

2.3.3 Annunciation and Control Cable

2.3.4 Ground Conductors

2.3.5 Not Used

2.3.6 Flexible and Portable Cable

2.4 TERMINATIONS

PART 3 EXECUTION

3.1 INSTALLATION INSTRUCTIONS

3.1.1 General

SECTION 26 05 19.00 26 Page 1

R0002

3.1.2 External Wiring

3.1.3 Phasing

3.1.4 Cable Pulling Requirements

3.1.5 Installation in Conduit

3.1.6 Installation in Cable Trays

3.1.7 Bends

3.1.8 Cable Supports

3.1.8.1 Cable Clamps

3.1.8.2 Support Grips

3.1.9 Splices

3.1.10 Terminations

3.1.11 Wire Marking

3.1.11.1 Marking

3.1.12 Ground Conductors

3.2 FIELD ACCEPTANCE TESTING

3.2.1 Testing

3.2.2 Acceptance

-- End of Section Table of Contents --

SECTION 26 05 19.00 26 Page 2

SECTION 26 05 19.00 26

INSULATED WIRE AND CABLE

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

Furnish and install insulated wire and cable as specified and as shown in contract drawings. Included is all control and power cable for the exciter cabinets.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM B3 (2018) Standard Specification for Soft or Annealed Copper Wire

ASTM B33 (2020) Standard Specification for Tinned Soft or Annealed Copper Wire for Electrical Purposes

ASTM B8 (2011; R 2017) Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft

ASTM B172 (2017) Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members, for Electrical Conductors

ASTM B174 (2017) Standard Specification for Bunch-Stranded Copper Conductors for Electrical Conductors

CODE OF FEDERAL REGULATIONS (CFR)

30 CFR 7.407 (2020) Test for Flame Resistance of Electric Cables and Cable Splices

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 1202 (2006) Flame-Propagation Testing of Wire and Cable

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA WC 57/ICEA S-73-532 (2014) Control, Thermocouple Extension, and Instrumentation Cables

SECTION 26 05 19.00 26 Page 3

NEMA WC 58/ICEA S-75-381 (2017) Portable and Power Feeder Cables for Use in Mines and Similar Applications

NEMA WC 70/ICEA S-95-658 (2009) Non-Shielded Power Cables Rated 2000 Volts or less for the Distribution of Electrical Energy

INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

NETA ATS (2021) Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2020) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 44 (2021) Thermoset-Insulated Wires and Cables

UL 1685 (2020) Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Submit within 60 days after Notice To Proceed:

Insulated Wire and Cable; G HDC

Annunciation and Control Cable; G HDC

Cable Supports; G HDC

Control Panel Shop Wiring; G HDC

Switchboard Wire; G HDC

Ground Conductors

Wire Marking

Terminations

Flexible and Portable Cable

SD-06 Test Reports

Submit three certified copies within 10 days after completion of tests:

SECTION 26 05 19.00 26 Page 4

Factory Inspection and Tests; G HDC

Insulation Resistance Test; G HDC

Shield Resistance Test; G HDC

1.4 DELIVERY, STORAGE, AND HANDLING

Wire and cable shall be furnished one length to a reel or coil. Each length, and the outside of each reel or coil, shall be plainly marked or tagged to indicate the cable length, voltage rating, conductor size, and manufacturer's lot number and reel number. Cables for exclusively DC applications shall be identified as such. Reels shall remain the property of the Contractor. Cables on reels shall be stored in an area reserved for that purpose and protected from damage. Reels shall be stored with the axis hole parallel to the horizontal plane. Cables on reels stored laying flat on the side of the reel will not be accepted. Reels shall be rolled only in the direction indicated by the manufacturer. cables shall be unreeled or uncoiled slowly to prevent damage to the sheath by sudden bending. Unreeling or uncoiling shall be stopped if kinks appear and shall not proceed until kinks have been removed. Kinked wire and cable will be rejected. Improperly handled wire and cable may be rejected.

1.5 INSPECTION AND TESTS

1.5.1 General

Inspection and tests of wire and cable furnished under these specifications shall be made by and at the plant of the manufacturer.

Testing in general shall comply with Section 6 of NEMA WC 57/ICEA S-73-532 or Section 6 of NEMA WC 70/ICEA S-95-658 as applicable. Specific tests required for particular materials, components, and completed cables shall be as specified in the sections of the above standards applicable to those materials, components, and cable types. Tests shall also be performed in accordance with the additional requirements specified below. In addition to the manufacturer's routine sample testing, each reel provided must have passed an insulation resistance test. No wire or cable may be shipped until after the manufacturer's test reports have been submitted and approved.

1.5.2 Flame Tests

All multiple-conductor and single-conductor cable assemblies shall pass IEEE 1202 flame tests (formerly under IEEE 383) or UL 1685 flame tests.

Single-conductor cables and individual conductors of multiple-conductor cables shall pass the flame test of Section 6.16 of NEMA WC 57/ICEA S-73-532 or Section 7.3 of NEMA WC 70/ICEA S-95-658 as applicable. If such tests, however, have previously been made on identical cables, these tests need not be repeated. Instead, certified reports of the original qualifying tests shall be submitted.

1.5.3 Independent Tests

The Government may at any time make visual inspections, continuity or resistance checks, insulation resistance readings, partial discharge tests, dissipation factor tests, or DC high-potential tests at field test values. A cable's failure to pass these tests and inspections, or failure to produce readings consistent with acceptable values for the application, will be grounds for rejection of the cable.

SECTION 26 05 19.00 26 Page 5

PART 2 PRODUCTS

2.1 INSULATED WIRE AND CABLE

2.1.1 General

All wire and cable shall be provided by the Contractor and shall conform to the requirements specified herein. Characteristics, including conductor size, stranding, number of conductors, rated circuit voltage, cabling, and other requirements for each type of service, shall be as indicated on the drawings, or as specified under the detailed requirements of these specifications for the particular construction or use, unless otherwise stated.

2.1.2 Wire and Cable Schedule

Wire and cable shall be furnished in accordance with the requirements of the Conduit and Cable Schedules, and as indicated on the drawings.

Estimated quantities listed in the Conduit and Cable Schedules are approximate for bidding purposes and shall be verified by the Contractor.

2.1.3 Governing Standards

Materials, construction and tests, unless otherwise specified, shall conform to the applicable requirements of NEMA WC 57/ICEA S-73-532 and NEMA WC 70/ICEA S-95-658 as applicable.

2.2 MATERIALS

2.2.1 Submittal Requirements

The Contractor shall submit catalog data to the Contracting Officer for review and/or approval as indicated in the submittal register. Data shall demonstrate compliance with the specifications requirements for all wire and cable types to be provided.

2.2.2 Rated Circuit Voltages

All wire and cable shall have minimum 600 volt rated circuit voltages in accordance with NEMA WC 70/ICEA S-95-658 .

2.2.3 Conductors

2.2.3.1 Material for Conductors

Conductors shall conform to all the applicable requirements of Section 2 of NEMA WC 70/ICEA S-95-658 and shall be annealed copper wire conforming to ASTM B3. Copper conductors may be bare, or tin- or lead-alloy-coated, if required by the type of insulation used. Tin-coated copper conductors shall conform to ASTM B33. Conductors shall be stranded as required by subparagraph entitled Stranding. Aluminum conductors will not be accepted.

2.2.3.2 Wire Size

Minimum wire size shall be No. 12 AWG for power and lighting circuits; No.

10 AWG for current transformer secondary circuits; No. 12 AWG for potential transformer circuits; No. 14 AWG for relaying, control, and

SECTION 26 05 19.00 26 Page 6 annunciation circuits; and No. 16 AWG for RTD, RTU, and PLC circuits. No.

18 AWG may be submitted as a variance for PLC module interconnection wiring if required by terminal size limitations, but shall not be run outside the PLC enclosure. The submittal shall include the reason for the variance request.

2.2.3.3 Stranding

Conductor stranding classes cited herein shall be as defined in Appendix G of NEMA WC 70/ICEA S-95-658 . Conductors No. 10 AWG and smaller shall be stranded for 120 volt lighting and receptacles, and for all other uses shall have Class B stranding as defined in Table 1 of ASTM B8. Any conductors used between stationary and moving devices, such as hinged doors or panels, shall be Class H or K stranding as defined in Appendix G of NEMA WC 70/ICEA S-95-658 . All other conductors shall have class B stranding.

2.2.4 Insulation

2.2.4.1 Insulation Voltage Rating and Insulation Level

The rated voltage of the insulation shall be 600 volts for all circuits operating below 2,000 volts, with 100 percent insulation level.

2.2.4.2 Insulation Material

Except as otherwise specified under paragraph SPECIAL WIRE AND CABLE, insulation shall be cross-linked thermosetting polyethylene (XLPE) type or an ethylene-propylene rubber (EPR) type meeting the requirements of Section 3 of NEMA WC 70/ICEA S-95-658 . Cables accepted as a variance for No. 18 under paragraph WIRE SIZE may have a non-PVC thermoplastic insulation and shall be UL Listed. Polyvinyl Chloride (PVC) insulation will not be accepted.

2.2.4.3 Insulation Thickness

The insulation thickness for each conductor shall be based on its insulation material.

a. Single-Conductor Cables - The insulation thickness for single-conductor cables shall be as required by NEMA WC 70/ICEA S-95-658 Section 3.3 Tables for Insulation Classes R, X, and E.

b. Multiple-Conductor Control Cables - The insulation thickness of the individual conductors of multiple-conductor (multiconductor) cables shall be as required by NEMA WC 70/ICEA S-95-658 Section 3.3 Tables for Insulation Classes R, X, or E for cables used for power, or NEMA WC 57/ICEA S-73-532 Section 3.3 Tables for insulations XLPE, ER, SR, CSPE, or EP composites for cables used for control and related purposes.

2.2.4.4 Insulation Shielding

Shielding, where specified for control cables, shall conform to the requirements of Section 4.1 of NEMA WC 57/ICEA S-73-532 .

SECTION 26 05 19.00 26 Page 7

2.2.5 Jackets

All cables shall have jackets meeting the requirements of Section 4.2 of NEMA WC 57/ICEA S-73-532 or Section 4.1 of NEMA WC 70/ICEA S-95-658 , and as specified herein. Individual insulated conductors listed in UL 44 Table 19 as optional or none for jacket type need not be jacketed.

Individual conductors of multiple-conductor cables shall be required to have jackets only if they are necessary for the conductor to meet other specifications herein. Jackets of single-conductor cables and of individual conductors of multiple-conductor cables, except for shielded cables, shall be in direct contact and adhere or be vulcanized to the conductor insulation. Multiple-conductor cables and shielded single-conductor cables shall be provided with a common overall jacket, which shall be tightly and concentrically formed around the core.

Repaired jacket defects found and corrected during manufacturing are permitted if the cable, including jacket, afterward fully meets these specifications and the requirements of the applicable standards.

2.2.5.1 Jacket Material

The jacket shall be one of the materials listed below, in accordance with the applicable paragraphs of NEMA WC 70/ICEA S-95-658 . Polyvinyl chloride compounds will not be permitted. Variations from the materials required below will be permitted only if approved for each specific use, upon submittal of sufficient data to prove that they exceed all specified requirements for the particular application.

a. Heavy-duty black neoprene (CR-HD).

b. Heavy-duty chlorosulfonated polyethylene (CSPE-HD).

Cables accepted as a variance for No. 18 under paragraph WIRE SIZE may have a thermoplastic jacket if it is UL listed and is rated for low smoke and/or zero halogen. PVC jackets will not be accepted.

2.2.5.2 Jacket Thickness

The minimum thickness of the jackets at any point shall be not less than 80 percent of the respective nominal thicknesses specified below:

a. Thickness of the jackets of the individual conductors of multiple-conductor cables shall be as required by Section 4.1 of NEMA WC 70/ICEA S-95-658 , and shall be in addition to the conductor insulation thickness for the insulation used. Thickness of the outer jackets or sheaths of the assembled multiple-conductor cables shall be as required by Section 4.1 of NEMA WC 70/ICEA S-95-658 .

b. Single conductor cables, if nonshielded, shall have a jacket thickness as specified in Section 4.1 of NEMA WC 70/ICEA S-95-658 . If shielded, the jacket thickness shall be in accordance with the requirements of Section 4.1 of NEMA WC 70/ICEA S-95-658 .

2.2.6 Cabling

Individual conductors of multiple-conductor cables shall be assembled with flame-and moisture-resistant fillers, binders, and a lay conforming to Section 5 of NEMA WC 57/ICEA S-73-532 or Section 5 of NEMA WC 70/ICEA S-95-658 as applicable, except that flat twin cables will not be permitted. Fillers shall be used in the interstices of

SECTION 26 05 19.00 26 Page 8 multiple-conductor round cables with a common covering where necessary to give the completed cable a substantially circular cross section. Fillers shall be non-hygroscopic material, compatible with the cable insulation, jacket, and other components of the cable. The rubber-filled or other approved type of binding tape shall consist of a material that is compatible with the other components of the cable and shall be lapped at least 10 percent of its width.

2.2.7 Dimensional Tolerance

The outside diameters of single-conductor cables and of multiple-conductor cables shall not vary more than 5 percent and 10 percent, respectively, from the manufacturer's published catalog data.

2.2.8 Color-Coding

Only one color-code method shall be used for each cable construction type. Colored braids will not be permitted. Control cable color-coding shall be in accordance with Table E-2 of NEMA WC 57/ICEA S-73-532 . Power cable color-coding for 208/120 volt systems and for 13.8kV systems shall be black for Phase A, red for Phase B, blue for Phase C, and white for grounded neutral. Color coding for 480/277 volt systems shall be brown for Phase A, orange for Phase B, yellow for Phase C, and gray for grounded neutral. Green shall be used only for grounding conductors if insulated.

2.3 SPECIAL WIRE AND CABLE

2.3.1 Control Panel Shop Wiring

Wiring for factory assembled control panels or factory assemblies of electrical components for miscellaneous equipment shall conform to NEMA WC 57/ICEA S-73-532 , and NEMA WC 70/ICEA S-95-658 , as applicable.

All wire shall be single conductor stranded copper in accordance with Section 2 of NEMA WC 57/ICEA S-73-532 . Insulation shall be rated for 600 volts with thickness in accordance with Section 3 of NEMA WC 70/ICEA S-95-658 . Conductors shall be Class B stranding, except hinge wire shall be Class D or Class K stranding as defined in Appendix G of NEMA WC 70/ICEA S-95-658 . Conductor size shall be No. 16 AWG minimum.

The completed installation shall conform to all requirements of NFPA 70 .

2.3.2 Switchboard Wire

Control wiring provided in the switchboards shall be single conductor 600-volt, Type SIS, or approved equal meeting the requirements of UL 44 .

Stranding shall be Class K as defined in Appendix G of

NEMA WC 70/ICEA S-95-658 .

2.3.3 Annunciation and Control Cable

The cable shall conform to the applicable requirements of UL 44 and NEMA WC 57/ICEA S-73-532 . Conductors shall be tinned copper conforming to Section 2.3 of NEMA WC 57/ICEA S-73-532 with Class C or Class K stranding as defined in Appendix G of NEMA WC 70/ICEA S-95-658 . Minimum conductor size shall be No. 16 AWG. Conductors shall be insulated for 600 volts with a thermoset insulation conforming to NEMA WC 57/ICEA S-73-532 Section

3.3 Tables for insulations XLPE, SR, CSPE, or EP composites. Overall shielding shall be provided by aluminum-Mylar tapealuminum-Polymer tape to provide 100 percent coverage. A drain wire in continuous contact with the

SECTION 26 05 19.00 26 Page 9 shield shall be provided as described in NEMA WC 57/ICEA S-73-532 Section

4.1 for metal thickness of 0.001 inch or less. Overall shields shall be provided for multiple-shielded pair or triplet cables. A thermoset jacket shall also be provided over shielded pairs or triplets of multiple-grouped cables in accordance with Section 4.2 and Table 4-1 of NEMA WC 57/ICEA S-73-532 for equivalent diameter of single conductor cables. Individual conductors of shielded and jacketed twisted pairs and triplets and jackets over paired or tripled conductors shall be color coded in accordance with Appendix E of NEMA WC 57/ICEA S-73-532 .

Polyvinyl chlorine (PVC) insulation or jacketing will not be accepted.

Individual conductors and cable assemblies shall pass the flame tests described in paragraph FLAME TESTS.

2.3.4 Ground Conductors

Ground conductors shall be bare, soft-drawn, Class A or B stranded copper cables sized in accordance with NFPA 70 . Ground conductors size No. 10 and smaller shall be stranded. Ground conductors size No. 6 and larger shall be Class A stranded.

2.3.5 Not Used

2.3.6 Flexible and Portable Cable

Cables indicated to be flexible or portable, rated over 1000 volts shall be Type DLO (UL listed as RHH/RHW-2), rated 2000 volts, or Type W or Type G rated for 2000 volts and conforming to the requirements of NEMA WC 58/ICEA S-75-381 . Stranding shall be in accordance with ASTM B172 or ASTM B174. Individual conductors and cables shall pass the flame tests described in paragraph FLAME TESTS or the MSHA flame test of 30 CFR 7.407 .

Cables indicated to be flexible or portable, rated under 1000 volts shall be Type SOOW, oil-resistant thermoset insulation rated 600 volts and suitable for outdoor use, and conforming to the requirements of UL 62.

Cables listed as Welding Cable will not be accepted.

2.4 TERMINATIONS

Terminals and lugs shall be approved for connection to copper conductors.

Long barrel, NEMA two-hole or four-hole compression-type terminals shall be furnished for terminating cables No. 2 AWG and larger.

PART 3 EXECUTION

3.1 INSTALLATION INSTRUCTIONS

3.1.1 General

For the purposes of this contract, the term "internal wiring" shall be used to designate the Contractor's factory installed wiring furnished with the furnished equipment, and the term "external wiring" shall be used to designate field installed wiring. Schedules of external wire and cable are as shown in the drawings, showing information on cable numbers, sizes and estimated lengths, number of conductors, the function, and origins and terminations. Although estimated cable lengths are shown on the schedule for bidding purposes, the Contractor shall be responsible for determining the actual cable length required to make an installation of all new cables without splices. Different voltages shall not be run within the same multiconductor cable. The Contractor shall submit the manufacturer's

SECTION 26 05 19.00 26 Page 10 installation instructions.

3.1.2 External Wiring

All external wire and cable shall conform to paragraph INSULATED WIRE AND CABLE. All wire and cable shall be installed in accordance with NFPA 70 requirements. All necessary materials, tools and equipment required for proper handling and installation of wire and cable in conduits, cable trays, and elsewhere shall be furnished by the Contractor. Except for spares, each wire and cable shall be connected to the associated equipment at both ends, and new cable shall be continuous and without splices between the equipment termination points. Spares shall have exposed ends taped over and labeled as "spare". Any cable damaged during installation shall be removed and replaced. Installation of wire and cable shall include installation of all supporting devices and all terminations required to complete the circuits as required.

3.1.3 Phasing

All terminal connections for power cables and conductors shall be made in such manner that the phasing will be as marked on the equipment, or indicated on the approved shop drawings. The Contractor shall verify phasing on existing wiring before disconnecting and removing. The Contractor is also responsible for verifying that the phasing on new wiring is the same rotation as presently existing wiring. Normal phasing for existing equipment is A-B-C from left to right, from top to bottom and from front to back when facing the front of the equipment but contractor to verify. After cables have been terminated and the connection torqued, insulate all exposed parts to the cable's voltage rating.

3.1.4 Cable Pulling Requirements

Wire and cable shall be pulled in a manner which will preclude damage to the conductor, insulation or jacket. Wire and cable shall be pulled by the conductor and not by the insulation, jacket, or sheath. Pulling tension shall not exceed the manufacturer's recommended maximum. Strain gages shall be used when pulling cable if any kind of mechanical pulling device is required for installation. Where the puller is attached to the outer jacket of a cable pulling tension shall be limited to 100 lbs.

Caution should be used to avoid exceeding the side wall rating of the cable. Any cable or conductor damaged during installation shall be removed and replaced with equivalent cable or conductor. Installation of wire and cable shall include installation of all supporting devices and all terminations and identifications required to complete the circuits as shown on the drawings and as required.

3.1.5 Installation in Conduit

Cable shall not be pulled into conduit runs until the conduit has been checked and determined to be clean and dry by pulling a clean, dry, tight fitting rag through each run. Only approved lubricants may be used to facilitate pulling of conductors.

3.1.6 Installation in Cable Trays

Cable pulling sheaves of adequate size shall be used where necessary to prevent damage to the cable. Cables shall be placed straight and parallel in the trays. There shall be minimum crossing of cables in trays. Cables shall be fastened in the cable tray at intervals not to exceed 6 feet. If

SECTION 26 05 19.00 26 Page 11 two or more single conductors comprising a circuit to and from electrical equipment are routed in a cable tray, they shall be bundled together at intervals not to exceed six feet with approved cable ties. Identification markers shall be installed on each tied bundle at intervals not to exceed 18 feet. After all work in the area containing new cables is complete, the trays shall be thoroughly cleaned of all dirt and trash generated by the new cable installation. Cable moved in the cleaning process shall be repositioned and final cable positions in the trays checked and corrected if necessary.

3.1.7 Bends

The minimum radius to which an insulated conductor or a multiconductor cable may be bent, without specific approval, whether permanently or temporarily during installation, shall be 12 times the overall diameter of the completed cable for tape shielded cables and 10 times the overall diameter for other cables. In these instances where this radius is not possible, approval will be required for minimum radii as specified in NFPA 70 . For multiconductor cable, follow manufacturer's recommendation for type of cable involved.

3.1.8 Cable Supports

3.1.8.1 Cable Clamps

Clamps for protecting and supporting the weight of cables installed in vertical wireways shall be as required per NFPA 70 for adequate support.

The size of each clamp shall be in accordance with the manufacturer's recommendations for each diameter and weight of cable to be supported or protected.

3.1.8.2 Support Grips

Heavy duty galvanized steel wire mesh support grips must be used to support the weight of cables installed in vertical wireways and cable shafts for adequate support as required per NFPA 70 Table 300.19(A). Size each support grip in accordance with the manufacturer's recommendations for each diameter and weight of cable to be supported or protected.

Closed mesh type support grips must be used except where the dynamics of the cable installation require open mesh, in which case this should be annotated on the submittal.

3.1.9 Splices

Splices will be permitted only with written approval. All splices shall be made in accessible cabinets, boxes or outlets. No splices will be allowed inside conduits.

3.1.10 Terminations

All wire and cable connections shall be made at terminal blocks or lugs using ring tongue terminals. The shield and shield insulating jacket of shielded signal cables and conductors, if applicable, shall be maintained to a point as close to the terminals as possible. The shield insulating jacket shall not be stripped from the shield except where necessary to make the ground connection. All signal cable shields shall be grounded at one end only. Spare conductors shall be terminated on an available unused terminal of a terminal block and labeled as SPARE at both ends, or if left unterminated shall have the exposed ends wrapped in insulating tape and

SECTION 26 05 19.00 26 Page 12 labeled as SPARE at both ends.

3.1.11 Wire Marking

All wires and cables shall be identified on both ends by the designations as shown on the Contract drawings or as otherwise shown on approved shop drawings. All wires and cables shall be clearly identified with the cable designation by either embossed 1-inch diameter brass tags, by embossed aluminum band markers, by tube-type markers as described in subparagraph Marking, or by 1-inch phenolic tags marked as described in subparagraph Marking. Tags or band markers shall be securely fastened to the cables at each termination, junction or pull box, where cables enter or leave cable trays, and as required at other points of access. Wires, cables and individual conductors of multiconductor cables shall be identified with markers at each termination. Installed markers shall be uniform in position on the wire and cable, and legends shall be visible when conductors are terminated at the equipment.

3.1.11.1 Marking

Tubing shall be sized to fit the wire being marked and shall have black marking on a light colored background. Tube-type markers shall be suitable for contact with the type of insulation material used. Tubing shall have permanent black marking on a light-colored background. The markers shall have been tested by an independent testing laboratory or by the manufacturer to indicate that the markers will not stain or discolor when subjected to an accelerated aging test while in contact with wire insulating materials and ultraviolet light exposure.

3.1.12 Ground Conductors

A ground conductor shall be run for all circuits. If not an integral part of a multiple conductor cable, a separate ground conductor shall be provided. Ground conductors shall be installed as continuous pieces of copper cable whenever possible. Exposed ground cable runs shall be supported to follow conduit, equipment or concrete wall contours. Support clamps or clips shall be of corrosion resistant metal and existing equipment bolts or screws shall be used where possible for fastening.

Drilling of equipment housings or frames will be permitted only when approved. Concrete anchors shall be used for wall fastening.

3.2 FIELD ACCEPTANCE TESTING

3.2.1 Testing

Testing shall be per NETA ATS recommended procedures.

a. Submit Test Reports in accordance with referenced standards in this section.

b. After completion of the installation and prior to energizing the conductors, perform wire and cable continuity and insulation tests as herein specified before the conductors are energized.

c. Contractor must provide all necessary test equipment, labor, and personnel to perform the tests, as herein specified.

d. Field Acceptance Testing and submittals shall be performed as described herein. Any damages to existing or new electrical equipment

SECTION 26 05 19.00 26 Page 13 resulting from contractor mis-wiring will be repaired and re-verified at contractor's expense. All repairs must be approved by the Government Quality Assurance Representative (GQAR) prior to acceptance of the repair.

e. Isolate completely all wire and cable from all extraneous electrical connections at cable terminations and joints. Substation and switchboard feeder breakers, disconnects in combination motor starters, circuit breakers in panel boards, and other disconnecting devices must be used to isolate the circuits under test.

f. Suitable records shall be kept of all tests, indicating the insulation-resistance tests, high voltage tests, continuity tests, and conductor identification markings. A duplicate record of all tests shall be furnished to the Contracting Officer. Prior to testing, the wire and cable test record form shall be submitted for approval. Test reports shall provide room for the Contracting Officer's signature.

After installation, but just prior to terminal connection, each conductor shall be tested as follows:

(1) Perform a Conductor Continuity Test on each wire and each individual conductor of a multiconductor cable to insure correct connections end-to-end.

(2) Perform a Shield Continuity Test on each cable shield to insure correct connections end-to-end.

(3) Perform a Shield Resistance Test on each cable shield.

Shield resistance shall be less than 10 ohms per 1000 feet of cable.

(4) Perform an Insulation Resistance Test on each field-installed conductor with respect to ground and adjacent conductors. Applied potential must be 1000 volts DC. Take readings after 1 minute and until the reading is constant for 15 seconds. Minimum insulation-resistance values must not be less than 100 Megohms.

(5) Tests shall be witnessed by the Contracting Officer and the wire and cable installation test reports shall be submitted in accordance with Section 01 33 00, SUBMITTAL PROCEDURES.

3.2.2 Acceptance

Final acceptance will depend upon the successful performance of wire and cable under test. Conductor shall not be energized until the final test reports are reviewed and approved by the Contracting Officer.

-- End of Section --

SECTION 26 05 19.00 26 Page 14