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Transcript
Department for Facilities Management Frankfort Kentucky New Power Plant for Northern Kentucky University SECTION 16123 BUILDING WIRE AND CABLE PART 1 - GENERAL 1.1 1.2 1.3 SECTION INCLUDES A. Building wire and cable. B. Wiring connectors and connections. RELATED SECTIONS A. Section 16111 - Conduit. B. Section 16130 - Boxes. C. Section 16195 - Identification. REFERENCES A. 1.4 1.5 ANSI/NFPA 70 1999 - National Electrical Code. PROJECT CONDITIONS A. Wire and cable routing shown on Drawings is approximate unless dimensioned. Route wire and cable as required to meet Project Conditions. B. Where wire and cable routing is not shown, and destination only is indicated, determine exact routing and lengths required. COORDINATION A. B. Determine and maintain required separation between cable and other work. Install cable routing to avoid interference with other work. PART 2 - PRODUCTS BUILDING WIRE AND CABLE 16123 - 1 December 02, 2004 NKU01.039500 Department for Facilities Management Frankfort Kentucky New Power Plant for Northern Kentucky University 2.1 BUILDING WIRE AND CABLE A. Low Voltage (600 V and Below) Wire And Cable 1. Description: Single conductor insulated wire. 2. Conductor: Stranded copper. 3. Insulation Voltage Rating: 4. Insulation: 5. All wire and cable shall be UL listed. 6. Acceptable manufacturers: Service Wire, ENCORE Wire, Circle Wire, ALCAN Cable, BICC/General, ROME. 7. For auxiliary systems such as fire alarm, audio/visual, etc., use cable specified under the appropriate heading or cable recommended by system manufacturer. 600 volts. ANSI/NFPA 70, Type THHN/THWN or XHHW. PART 3 - EXECUTION 3.1 3.2 EXAMINATION A. Verify that weather. B. Verify that work, the performance of which could damage wire, has been completed. wiring will be protected from PREPARATION A. 3.3 installed Completely and thoroughly swab raceway before installing wire. WIRING METHODS A. Dry Interior Locations: Use building wire, Type THHN/THWN or XHHW insulation, in raceway. BUILDING WIRE AND CABLE 16123 - 2 December 02, 2004 NKU01.039500 Department for Facilities Management Frankfort Kentucky New Power Plant for Northern Kentucky University 3.4 B. Wet or Damp Interior Locations: Use only building wire, Type XHHW-2 insulation, in raceway. C. Exterior Locations: Use only building wire, Type XHHW-2 insulation, in raceway. D. Underground Installations: Use only building wire, Type XHHW-2 insulation, in raceway. INSTALLATION A. Install products instructions. B. Use conductor not smaller than 12 AWG for power and lighting circuits unless otherwise noted on drawings. C. Use conductor not smaller than 14 AWG for control circuits unless otherwise noted on drawings. D. All wires of any one circuit shall be run in the same conduit. No more than three current carrying conductors (exclusive of grounds and common neutrals) shall be run in the same conduit, unless otherwise noted. E. Whenever possible, unless otherwise noted, utilize common neutrals to minimize number of wires in lighting and receptacle circuits. This will result in three wires for two circuits in single phase systems and four wires for three circuits in three phase four wire systems. Common neutrals for two or more 20 ampere circuits shall be no. 10 AWG minimum wire size. F. Use 10 AWG conductors for 20 ampere, 120 volt branch circuits longer than 100 feet. G. Use 10 AWG conductors for 20 ampere, 277 volt branch circuits longer than 200 feet. H. Pull all conductors into raceway at same time. I. Use suitable wire pulling lubricant for building wire 4 AWG and larger. Use only PolyWater DynaBlue (e.g. 5 gal BUILDING WIRE AND CABLE 16123 - 3 December 02, 2004 NKU01.039500 in accordance with manufacturers Department for Facilities Management Frankfort Kentucky New Power Plant for Northern Kentucky University drum p/n D-640) pulling lubricant on all cable pulls. The use of Yellow 77, and other similar pulling lubes, is not acceptable. 3.5 J. Neatly train and lace wiring inside boxes, equipment, and panelboards. K. Clean conductor surfaces before installing lugs and connectors. ALL Medium Voltage Termination kits to be installed by PROPERLY TRAINED PERSONNEL ONLY. A Properly trained person is further defined by those having been trained by Raychem or a Raychem Factory-Trained Technician / Representative. Validation of this training must be documented or supportable, if requested, by a letter from the technician / representative. Persons able to provide proof of having more than ten (10) years experience specifically in the application of Raychem medium & high voltage cable termination kits may also be considered as being qualified. In any event, the cable cleaning kits are to be PolyWater p/n NFT-369/S. L. Make splices, taps, and terminations to carry full ampacity of conductors with no perceptible temperature rise. M. Use only long barrel compression lugs installed with a minimum of two crimps per termination for copper conductor splices and taps, 8 AWG and larger. CRIMPING IS TO BE PERFORMED USING PROPER TOOLS - SUCH AS A DIEHY-voltage (<600 Volt) circuits, re-insulate all uninsulated conductors and connectors with electrical tape to 150 percent of insulation rating of conductor or provide U.L. approved heat shrink tubing insulating system, Raychem WCSM or approved equal. NOTE: There are no applications in this installation which would require splicing of medium voltage cables. N. Use insulated spring wire connectors with plastic caps for copper conductor splices and taps, 10 AWG and smaller. Fixed spring connectors and self-stripping tap connectors shall not be used. INTERFACE WITH OTHER PRODUCTS BUILDING WIRE AND CABLE 16123 - 4 December 02, 2004 NKU01.039500 Department for Facilities Management Frankfort Kentucky New Power Plant for Northern Kentucky University 3.6 A. Identify wire and cable as per provisions of Section 16195. B. Identify each conductor with its circuit number or other designation indicated on Drawings. FIELD QUALITY CONTROL A. Inspect wire for physical damage and proper connection. B. Measure tightness of bolted connections and compare torque measurements with manufacturer's recommended values. C. Verify continuity of each feeder and branch circuit conductor. Perform high-resistance test (Megger) on all primary motor load and distribution panel circuits in accordance with NETA Recommended Acceptance Testing Specifications. D. Properly torque and perform low-resistance readings (Ductor) readings on all cable to conductor, cable to bus, or bus to bus splice plate connections. ALL torqued and tested connection points shall be identified by a mark (black surface, across the lug (if applicable), across the flat washer - lock washer and head of the bolt. If a connection is inspected and found not to have been marked - retorquing and re-testing will be required. No exceptions. E. All medium voltage cables shall be installed utilizing a tugger having a ft-lb gauge to ensure that at no time recommended levels. F. tested utilizing a 5 KV DC high-resistance test set (Megger) after pulling and prior to termination kit application. After termination kit application, the completed installation shall be tested in accordance with NETA Recommended Acceptance Testing Specifications utilizing a suitable NIST traceably DC Overpotential Test Set (DC Hi-Pot). Appropriate test reports shall be generated in accordance BUILDING WIRE AND CABLE 16123 - 5 December 02, 2004 NKU01.039500 Department for Facilities Management Frankfort Kentucky New Power Plant for Northern Kentucky University with testing specifications and will include such information as temperature, humidity, etc.. Final acceptance shall be by engineer approval. END OF SECTION BUILDING WIRE AND CABLE 16123 - 6 December 02, 2004 NKU01.039500