VA 27 10 00-2005 STRUCTURED CABLING.pdf

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1、12-05M 27 10 00 - 1 SECTION 27 10 00 STRUCTURED CABLING SPEC WRITER NOTE: Delete between /_/ if not applicable to project. Also delete any other item or paragraph not applicable to the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION A. This section specifies the furnishing, ins

2、tallation, and connection of the structured cabling system to provide a comprehensive telecommunications infrastructure. 1.2 RELATED WORK A. Excavation and backfill for cables that are installed in conduit: Section 31 20 00, EARTH MOVING. B. Sealing around penetrations to maintain the integrity of t

3、ime rated construction: Section 07 84 00, FIRESTOPPING. C. General electrical requirements that are common to more than one section in Division 27: Section 27 05 11, REQUIREMENTS FOR COMMUNICATIONS INSTALLATIONS. D. Conduits for cables and wiring: Section 27 05 33, RACEWAYS AND BOXES FOR COMMUNICATI

4、ONS SYSTEMS. E. Requirements for personnel safety and to provide a low impedance path for possible ground fault currents: Section 27 05 26, GROUNDING AND BONDING FOR COMMUNICATIONS SYSTEMS. 1.3 SUBMITTALS A. In accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES, furnish the f

5、ollowing: 1. Manufacturers Literature and Data: Showing each cable type and rating. 2. Certificates: Two weeks prior to final inspection, deliver to the / Resident Engineer / COTR / four copies of the certification that the material is in accordance with the drawings and specifications and has been

6、properly installed. 1.4 APPLICABLE PUBLICATIONS A. Publications listed below (including amendments, addenda, revisions, supplements and errata) form a part of this specification to the extent referenced. Publications are reference in the text by the basic designation only. Provided by IHSNot for Res

7、aleNo reproduction or networking permitted without license from IHS-,-,-12-05M 27 10 00 - 2 B. American Society of Testing Material (ASTM): D2301-04. Standard Specification for Vinyl Chloride Plastic Pressure Sensitive Electrical Insulating Tape C. Federal Specifications (Fed. Spec.): A-A-59544-00.

8、Cable and Wire, Electrical (Power, Fixed Installation) D. National Fire Protection Association (NFPA): 70-05 National Electrical Code (NEC) E. Underwriters Laboratories, Inc. (UL): 44-02 Thermoset-Insulated Wires and Cables 83-03 Thermoplastic-Insulated Wires and Cables 467-01. Electrical Grounding

9、and Bonding Equipment 486A-01 Wire Connectors and Soldering Lugs for Use with Copper Conductors 486C-02 Splicing Wire Connectors 486D-02 Insulated Wire Connector Systems for Underground Use or in Damp or Wet Locations 486E-00 Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors

10、493-01. Thermoplastic-Insulated Underground Feeder and Branch Circuit Cable 514B-02 Fittings for Cable and Conduit 1479-03 Fire Tests of Through-Penetration Fire Stops PART 2 - PRODUCTS 2.1 CONTROL WIRING A. Unless otherwise specified in other sections of these specifications, control wiring shall b

11、e as specified for power and lighting wiring, except the minimum size shall be not less than No. 14 AWG. B. Control wiring shall be large enough so that the voltage drop under inrush conditions does not adversely affect operation of the controls. 2.2 COMMUNICATION AND SIGNAL WIRING A. Shall conform

12、to the recommendations of the manufacturers of the communication and signal systems; however, not less than what is shown. B. Wiring shown is for typical systems. Provide wiring as required for the systems being furnished. C. Multi-conductor cables shall have the conductors color coded. 2.3 WIRE LUB

13、RICATING COMPOUND A. Suitable for the wire insulation and conduit it is used with, and shall not harden or become adhesive. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-12-05M 27 10 00 - 3 B. Shall not be used on wire for isolated type electrical

14、power systems. 2.4 FIREPROOFING TAPE A. The tape shall consist of a flexible, conformable fabric of organic composition coated one side with flame-retardant elastomer. B. The tape shall be self-extinguishing and shall not support combustion. It shall be arc-proof and fireproof. C. The tape shall not

15、 deteriorate when subjected to water, gases, salt water, sewage, or fungus and be resistant to sunlight and ultraviolet light. D. The finished application shall withstand a 200-ampere arc for not less than 30 seconds. E. Securing tape: Glass cloth electrical tape not less than 0.18 mm (7 mils) thick

16、, and 19 mm (3/4 inch) wide. PART 3 - EXECUTION 3.1 INSTALLATION, GENERAL A. Install all wiring in raceway systems. B. Seal cable and wire entering a building from underground, between the wire and conduit where the cable exits the conduit, with a non-hardening approved compound. C. Wire Pulling: 1.

17、 Provide installation equipment that will prevent the cutting or abrasion of insulation during pulling of cables. 2. Use ropes made of nonmetallic material for pulling feeders. 3. Attach pulling lines for feeders by means of either woven basket grips or pulling eyes attached directly to the conducto

18、rs, as approved by the Resident Engineer. 4. Pull in multiple cables together in a single conduit. 3.2 INSTALLATION IN MANHOLES A. Install and support cables in manholes on the steel racks with porcelain or equal insulators. Train the cables around the manhole walls, but do not bend to a radius less

19、 than six times the overall cable diameter. /B. Fireproofing: 1. Install fireproofing where low voltage cables are installed in the same manholes with high voltage cables; also cover the low voltage cables with arc proof and fireproof tape. 2. Use tape of the same type as used for the high voltage c

20、ables, and apply the tape in a single layer, one-half lapped or as recommended by the manufacturer. Install the tape with the coated side towards the cable and extend it not less than 25 mm (one inch) into each duct. Provided by IHSNot for ResaleNo reproduction or networking permitted without licens

21、e from IHS-,-,-12-05M 27 10 00 - 4 3. Secure the tape in place by a random wrap of glass cloth tape. / 3.3 CONTROL, COMMUNICATION AND SIGNAL WIRING INSTALLATION A. Unless otherwise specified in other sections, install wiring and connect to equipment/devices to perform the required functions as shown

22、 and specified. B. Except where otherwise required, install a separate power supply circuit for each system so that malfunctions in any system will not affect other systems. C. Where separate power supply circuits are not shown, connect the systems to the nearest panelboards of suitable voltages, wh

23、ich are intended to supply such systems and have suitable spare circuit breakers or space for installation. D. Install a red warning indicator on the handle of the branch circuit breaker for the power supply circuit for each system to prevent accidental de-energizing of the systems. E. System voltag

24、es shall be 120 volts or lower where shown on the drawings or as required by the NEC. 3.4 CONTROL, COMMUNICATION AND SIGNAL SYSTEM IDENTIFICATION A. Install a permanent wire marker on each wire at each termination. B. Identifying numbers and letters on the wire markers shall correspond to those on t

25、he wiring diagrams used for installing the systems. C. Wire markers shall retain their markings after cleaning. D. In each manhole and handhole, install embossed brass tags to identify the system served and function. 3.5 EXISITNG WIRING Unless specifically indicated on the plans, existing wiring sha

26、ll not be reused for the new installation. Only wiring that conforms to the specifications and applicable codes may be reused. If existing wiring does not meet these requirements, existing wiring may not be reused and new wires shall be installed. - - - E N D - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-