A. All materials shall be listed by an OSHA approved Nationally Recognized Testing Laboratory (NRTL).

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1 16120 WIRE AND CABLE ************************************************************************************************************* SPECIFIER: CSI MasterFormat 2004 number: An optional keynote to the Drawings follows major product titles, for A/Es using National CAD Standard. ************************************************************************************************************* PART 1 GENERAL 1.1 SUMMARY A. Provide all labor, materials equipment and services necessary to complete for the Wire and Cables work, as indicated on the drawings, and as specified herein. B. Related Sections: Mechanical and Electrical Coordination Raceways and Conduit Motor Power and Control Wiring. 1.2 SYSTEM DESCRIPTION A. All materials shall be listed by an OSHA approved Nationally Recognized Testing Laboratory (NRTL). B. Provide wires and cables comprised of copper conductors under provisions of the American Society for testing and materials (ASTM) and insulated Power Cable Engineers Association (IPCEA) Standards. 1.3 SUBMITTALS A. Submit shop drawings, product data, and descriptive literature before starting work, and as specified in other section of the Master Specifications applicable to the project. B. Delivery, Storage and Handling shall conform to Section 16100, Basic Materials and Methods. Deliver, store, and handle all wire and cable in complete coils, boxes, or reels with manufacturer s name and approval tag attached. Tag to indicate wire size and type of insulation. PART 2 PRODUCTS 2.1 EQUIPMENT A. Wire and Cable: 1. Wire and cable shall be soft annealed 98 percent conductivity copper with 600 volt A.C. thermoplastic insulation unless otherwise noted. 2. Wire and cable shall be new and manufactured not more than 12 months before installation. Project No. SPECIFICATION GUIDELINES

2 3. Each coil or reel shall bear UL label and wire marked with AWG or circular mil wire size, voltage rating, insulation type, type stranding, and the manufacturer's name. 4. Unmarked wire found installed shall be replaced at no additional cost to M-DCPS. 5. Wiring shall comply with NEMA WC-5, NEMA WC-7, IPCEA S and IPCEA S B. Light and Power Wiring Circuit Conductors: 1. Light and power wiring circuit conductors may be stranded in sizes No.10 AWG and smaller, and concentric strand Class B for conductors No.8 AWG and larger. 2. Stranded copper conductors may be used for final connections to individual recessed lighting fixtures, devices, and for control and signal circuit wiring only with crimp-on type terminations. 3. Do not use stranded wire for wiring to receptacles, unless insulated crimp-on connectors are installed on the wiring ends. C. Wiring Insulation shall be as follows: 1. Lighting and receptacle branch circuit protected at no more than 20 amperes: solid copper having THHN/THWN-2 insulation, in trade size #12 AWG rated 600 volts, 90 degrees Centigrade in dry and wet locations. 2. All control and alarm wiring: type THHN/THWN-2 stranded copper in trade size #14 or smaller, rated 600 volts, 75 degrees Centigrade in dry and wet locations. 3. Unless otherwise specified or shown, all other branch or feeder conductors: stranded copper having THHN/THWN-2 insulation, in trade sizes No. 10 AWG TO 600 MCM, inclusive. 4. Provide, where required, the following types of insulation and meet the requirements specified below: a. Type AVA: under provisions of Federal Specifications J-C-30. b. Type SF-2: 2/64 inch thick silicone-rubber, 125º C minimum, with outer covering of heat-resisting glass braid. 5. Provide distinctive markings for the covering of wires and cables designed to meet the above specification so that they may be readily identified in the field. Provide a distinctive color code for the covering of the individual conductors for identification of individual conductors. D. Color Coding: 1. Color Code secondary service feeder and branch circuit conductors throughout the electrical system as follows: 208/120 Volts Phase 480/277 Volts Black A Brown Red B Purple Blue C Yellow White Neutral Gray Green Ground Green On existing schools new wiring shall match color of existing phase wiring. Project No. SPECIFICATION GUIDELINES

3 2. Conductors: a. As manufactured by Colonial Wire and Cable, Southwire Company, or American Insulated Wire and conform under provisions of NFPA and IPCEA. b. 98 percent conductive copper under provisions of Matheisen s Standard rated for 600 volts. c. Aluminum conductors are not acceptable. d. Stamped for voltage, type, temperature, size, etc. 3. All other colors (violet, traced, etc.) shall only be used for switch legs, control, or communication circuits. 4. Conductors for control wiring shall be color coded, using different color coding than the energy conductor coding specified above. Control wires shall be numbered. E. Minimum Wire Size shall be No.12 AWG for control over 200 feet, unless otherwise noted. Control wiring may be No.14 AWG if distance is less than 200 feet. 1. Fire alarms, CCTV, intercoms, and intrusion systems shall have cable and wiring according to manufacturer's specifications or as specified. F. Wire and Cable Connectors and Terminations: 1. For splices in branch circuit conductors solid or stranded size No.10 AWG and smaller, use UL listed soft plastic wire nut with sharp self-cutting interior threads, 3M Scotchlok, Ideal Supernut, or T&B Piggy of the size to match the wire. 2. For terminations of stranded or solid wire in size No.10 AWG and smaller at equipment terminals, use UL listed, tin-plated copper, 600 volt vinyl insulated compression type ring or fork type equivalent to T&B "Sta-Kon" or Burndy "Vinylug". 3. For No.8 AWG and Larger: T&B "Locktite" connectors, Burndy "Versitap" connectors, or OZ-Gedney solderless connectors, with insulating covers, tape or heat shrink insulation system. a. Terminations and splices in feeders may be made with solderless pressure type connectors complete with composition insulating covers, field insulating tape, or heat shrink insulation system. b. Connectors and lugs for 250 mcm cable and larger shall be of the 2-hole type and for compression type shall have at least 2 indents. c. Compression lugs and connectors shall be tin plated wrought copper, of size to match the cable. 4. Splices in underground exterior wiring shall be made fully waterproof by potting or encapsulating. 3M Scotchcast in-line resinpower cable splice kit or equivalent for wire sizes #4 AWG and larger, and 3M direct bury splice kit or equivalent high impact, UV resistant tube pre-filled with water-resistant gel for wire sizes #6 AWG and smaller. Underground waterproof splice kits shall be listed by an OSHA approved NRTL. 5. Insulating tapes shall be of a type approved for the application and shall be flame retardant. Tapes shall be as manufactured by 3M or Bishop Electric. 6. Cable Ties: T&B "Ty-Rap" or Burndy "Unirap". 7. Cable Identification: Branch circuits wire markers 3M "Scotch Code" or accepted equivalent. For feeder sizes, non-ferrous metal stencil tags. Project No. SPECIFICATION GUIDELINES

4 8. Thermal Fusion Connections: "Catalytic thermal weld" by Cadweld or accepted equivalent. 9. Arc/Proofing Tape a. A tape consisting of a flexible, conformable fabric of organic composition coated one side with a flame retardant elastomer. 1) Tape shall not support combustion, shall be self-extinguishing and shall retain not less than 65 percent of its original tensile strength when tested by the cut-strip method of ASTM. 2) Include test information of exposure to distilled water, 3 percent salt water, ultraviolet light and sunlight in compliance with ASTM requirements. 10. Control Wiring: a. Control conductors for 75 volts or less: #18 AWG stranded copper. b. Wiring: comply with NEC Art. 725 Class 1, Class 2, Class 3 Remote Control, Signaling and power limited circuits. c. Communication, sound and intercommunication conductors: 100 percent shielded. 11. Portable Cords: a. Stranded copper shall be listed by an OSHA-approved NTRL, and shall be resistant to water, acid, and alkalies. b. Provide each cord with one (1) green covered conductor to be used as the grounding conductor. c. 300 Volt: #14 AWG Type SJ. d. 600 Volt: #14 AWG Type SO. PART 3 EXECUTION 3.1 INSPECTION A. Do not proceed with the work of this section until conditions detrimental to the proper and timely completion of the work have been corrected in an acceptable manner. 3.2 INSTALLATION A. Wire and Cable Installation: 1. Wire and cable shall be suitably protected from weather or damage during storage and handling and shall be in first-class condition when installed. 2. Conductors shall not be pulled into conduit until raceway system is substantially complete. Wiring shall be continuous within conduit runs. Splices will be allowed only at outlet and junction boxes. Joints shall be mechanically and electrically secure. 3. Pulling lubricants, if used, shall comply with UL requirements for the type of conduit material and cable insulation being used. 4. Commercially produced wire lubricant may be utilized to ease wire pulling. Lubricant of a type to produce no deteriorating effect on conductor installation or on the interior of associated wire way and shall be approved by the wire manufacturer. Project No. SPECIFICATION GUIDELINES

5 5. Care shall be taken to prevent cutting and abrasion of cable insulation during the pulling of feeders. a. Ropes used for pulling of feeders shall be made of polyethylene or other suitable nonmetallic material. b. Pulling lines shall be attached to conductor cables by means of either woven basket grips or pulling eyes attached directly to the conductors. c. Rope hitches shall not be used. d. Cables to be installed in a single conduit shall be pulled in together. e. Where polyethylene insulation is used and a pulling lubricant is required, the lubricant shall be certified by the manufacturer to be non-damaging to such insulation. f. Cables without a metallic sheath, the cable support: of the split wedge composition type with clamps each individual conductor firmly and tightens due to the weight of the cable. All boxes: hot-dipped galvanized after fabrication. 6. Do not bend cables during installation, either permanently or temporarily, to radii less than 12 times the outer diameters, except where conditions make the specified radius impracticable and shorter radii are allowed by the NEC and NEMA Standards. 7. Neatly and securely bundle conductors located in branch circuit panelboards, cabinets, control boards, switchboards, and motor control centers. Use nylon bundling straps. 8. Provide suitable installation equipment to prevent cutting or distortion of conduits during the pulling of feeders. Use masking or other means to prevent obliteration of cable identification when solid color coating or colored tracers are used. 9. Control wiring color codes, shall be of type as required by its equipment manufacturer. Interconnections of control wiring shall be on numbered terminal strips. 10. Where 2 neutrals are installed in same conduit, their sets of wiring shall be grouped and clearly identified by permanent tags or other means. 11. At each outlet, a loop or end-of-wire not less than 9 inches long shall be left for connection to lead. 12. Leading end of each conductor pulled shall be carefully examined for damage to jacket. If damage is evident, cable shall be extended and further checked for damage, with good cable only to remain. 13. Cables in junction and pull boxes shall be properly trained and racked. 14. Branch circuit wiring in panelboard gutters shall be installed vertically in the gutter with a 90-degree bend at the supply circuit breaker, wire shall enter the circuit breaker lug horizontally. 15. Install cable supports and boxes at vertical feeders and according to the schedule in the NEC. Boxes shall be built of heavy steel plates not less than No.10 USS gage fastened to an angle iron frame with removable covers secured by brass machine screws. The cable support shall be of the split wedge type that clamps each conductor firmly and tightens due to the weight of the conductor. 16. Install wires in conduit runs after concrete and masonry work is complete and moisture is swabbed from conduits. B. Wire and Cable Splicing and Terminations: 1. Splices and terminations of conductors shall be made using specified materials and methods installed according to the manufacturer's recommendations. Make conductor length for parallel feeders installation of exactly the same length. Project No. SPECIFICATION GUIDELINES

6 2. Splices in branch circuit wiring shall be made by stripping conductor insulation, twisting conductors until mechanically secure, and installing a self-threading insulated type connectors. In the making of a splice, connectors shall be brought up upon the conductors so that all the conductors are equally engaged, the insulation is not ruptured, no bare wires are exposed or have backed-off due to application of pressure and the connector will not loosen due to cycling or vibration, in order to insure an efficient splice. Splices are not allowed within panelboards. 3. Conductors shall be squarely cut and fully inserted into the lug barrel or connector. Insulation shall be stripped without cutting the conductor or removing strands, exposing the conductor for the minimum distance required for connection. Splice connectors shall be of a type and be so installed that the conductor is fully insulated by a skirt of such design, or taped so cold flow of the conductor insulation will not be induced when the conductor is positioned in its final operating position. No splices or joints will be permitted in either feeder or branch, circuits, except at outlets or accessible junction boxes. 4. Do not combine conductors under the same lug. Provide individual lugs for individual conductors. Re-tighten bolt type connectors 24 to 48 hours after initial installation and before taping. 5. Connectors shall be insulated by approved type, integral or separate cover, or by means of taping with approved plastic or rubber and friction tapes to provide insulating value equal to that of the conductors being joined. The number and size and combinations of conductors allowed by UL as listed on manufacturers' packaging of connector shall be strictly complied with. 6. Terminations at equipment terminal blocks shall be made using compression type connectors suitable to match terminal type. 7. Continuity of neutral on multi-wire branch circuits shall not be made on any device at terminal blocks, but shall be spliced and a tap brought out, thereby assuring no openings of the neutral in the replacement of a device. 8. Feeders shall be identified by means of nonferrous tags or pressure-sensitive labels securely fastened to all cables, feeders, and power circuits in vaults, pull boxes, manholes, switchboard rooms, terminations of cables, etc. Tags or labels shall be stamped or printed to include the feeder number, source and equipment supplied. If suspended type tags are provided, they shall be attached by nylon cables ties or other nonconductive permanent means. 9. Branch circuit conductors shall be identified at supply circuit breakers, with the circuit number using pressure sensitive adhesive wire markers. 10. Branch circuit wiring for lighting and other single phase 277 volt or 120 volt applications shall be multi-wired utilizing common neutrals. Under no circumstances shall any switch break a neutral conductor. 11. Circuiting work shall comply with the following: a. Loads on panel busses shall be balanced on phases as evenly as possible. b. No neutral conductor shall be common to more than 1 circuit conductor connected to the same phase leg of the supply system. c. Circuiting of panelboards shall allow breakers to be grouped logically by functions. C. General Wiring Methods: 1. Provide wiring complete from point of service connection to all receptacles, luminaires, power outlets, pull and junction boxes and other devices as shown. Project No. SPECIFICATION GUIDELINES

7 Provide slack wire for all future connections. Unless otherwise specified, branch circuit conductors, provide No. 12 AWG or larger. In outlet boxes for future installations, tape ends of wires and blank covers installed. 2. Do not bend cables during installation to radii less than that recommended by the manufacturer. 3. Bundle conductors not larger than No. 10 AWG located in branch circuit panel boards, signal cabinets, signal control boards, switchboards and motor control centers. Cable in individual circuits, conductors larger than No. 10 AWG located in switchboards, motor control centers and pullboxes. a. Bundling and cabling shall be provided with straps made of self-extinguishing nylon. b. Each strap shall be constructed with a locking hub or head on one end and a taper on the other. c. Apply Arc-proofing, as specified, after cabling. 4. Where the length of a homerun, from panel to first circuit, exceeds 100 feet for a 120 volt circuit or 150 feet for a 277 volt circuit, the conductor size shall be No. 10 AWG. 5. Where homerun circuit numbers are shown, follow such numbers in connecting circuits to panel boards. Where panel board cabinets are recessed, stub up concealed conduits (with sufficient capacity to carry the number and size of future conductors) to a junction box for future connections and extensions located as follows: a. In an area with removable ceiling, provide accessibility above the suspended ceiling for the junction box. b. In an area with non-removable ceiling, recess the junction box in the ceiling directly over the panel board location. c. In an area without suspended ceiling but with finished wall, recess the junction box in the wall directly above the panel board as directed by the A/E. d. In an area without suspended ceiling but with unfinished wall, expose the junction box on the ceiling directly over the panel board location. 6. Do not utilize channel support members for suspended type fluorescent lighting fixtures for building branch circuit wiring unless otherwise indicated. Connections between units in continuous rows shall be made within the fixture wireway. 7. Provide dedicated neutral conductors for computer power outlets. D. Phasing and Identification 1. The plans designation of all secondary conductors are the same and are indicated in or on all 3-phase outlets, transformers, panel boards and disconnect switches, and they shall be connected with uniform phase sequence. 2. Maintain A, B, C phase relation left to right when viewed from the front. E. Voltage Drops at New Construction: 1. Total Allowable Voltage Drop for Service Source to Load: Limit to a maximum drop of 5 percent. Increase wire size, where necessary, to comply with this requirement. a. Branch Circuits: Limit to a maximum voltage drop of 3 percent. Project No. SPECIFICATION GUIDELINES

8 b. Service Source to Individual Panelboards: Limit to a maximum voltage drop of 2 percent. F. Voltage Drops at Existing Construction: 1. Total Allowable Voltage Drop for Service Source to Load: Limit to a maximum voltage drop of 5 percent. Increase wire & conduit sizes, where necessary, to comply with this requirement. a. Branch Circuits: Limit to a maximum drop of 3 percent. b. Service Source to Individual Panelboards: Limit to a maximum drop of 3 percent. END OF SECTION Project No. SPECIFICATION GUIDELINES