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SECTION 16134 UNDERFLOOR RACEWAY ASSEMBLIES Display hidden notes to specifier. (Don't know how? Click Here)

PART 1 GENERAL

1.1 SECTION INCLUDES

1.A. Underfloor Duct Distribution System.

1.B. Modular Wiring and Access Floor Service Fitting.

1.2 RELATED SECTIONS

2.A. Section 03300 - Cast-in-Place Concrete: Rough-in of underfloor duct distribution system.

2.B. Section 05300 - Metal Decking: Rough-in of underfloor duct distribution system.

2.C. Section 10270 - Access Flooring: Coordination and installation of modular underfloor wiring system.

2.D. Division 16 - Electrical: Electrical systems and components.

2.E. Division 16 - Communications: Communications systems and components.

2.F. Division 16 - Electronic Safety and Security: Security systems and components.

2.G. Division 16 - Electrical; specifications for electrical systems and components.

1.3 REFERENCES

3.A. American Concrete Institute (ACI) 301 - Concrete for Buildings.

3.B. American Concrete Institute (ACI) 318 - Building Code Requirements for Reinforced Concrete.

3.C. American Concrete Institute (ACI) 304 - Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

3.D. National Electrical Code (NEC) Article 390 - Underfloor Raceways (NFPA No. 70).

16134-1 3.E. NFPA 70 - National Electrical Code.

3.F. Underwriters Laboratories Inc. (UL 884) - Standard for Underfloor Raceways and Fittings.

3.G. Canadian Underwriters Laboratories (cUL) - Standard C22.2, No. 80.

1.4 SUBMITTALS

4.A. Submit under provisions of Section 01300.

4.B. Product Data: Manufacturer's data sheets and descriptive literature for underfloor raceway components, fittings, and accessories indicated, including: 4.B.1. Preparation instructions and recommendations. 4.B.2. Storage and handling requirements and recommendations. 4.B.3. Installation methods.

4.C. Submit manufacturer's specifications and installation instructions for each product specified. Include manufacturer's certification as required to show compliance with these specifications. Indicate by transmittal form that a copy of each instruction has been distributed to the installer. Submit detailed drawings showing layout of all Walkerduct ducts, junction boxes and accessories as necessary for the proper installation of the infloor system.

4.D. Installation drawings shall be furnished showing the appropriate power layouts where the modular wiring system is to be used. All modular wiring system components in the installation shall be represented on the layout drawing in the form of a legend. The legend shall contain a catalog number and a description describing the components use.

4.E. Samples: Submit service fittings and outlet covers with required color and finish. Show standard color ranges available.

4.F. Test Reports: Certified reports from independent testing laboratory supporting compliance of raceway system to specified requirements.

4.G. Project Record Documents: If variations from approved shop drawings occur during installation of raceway system, submit final as-built drawings indicating such variations.

1.5 QUALITY ASSURANCE

5.A. Manufacturer Qualifications: Firms regularly engaged in manufacture of underfloor distribution systems of the types and sizes required, whose products have been in satisfactory use in similar service for not less than 10 years. Provide underfloor distribution systems produced by a manufacturer listed in this section.

5.B. Electrical Components, Devices, and Accessories: Comply with requirements of applicable local codes, NEC, UL, and NEMA Standards pertaining to underfloor distribution systems. Listed and labeled in accordance with NFPA 70, Article 100.

16134-2 5.C. Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship. 5.C.1. Finish areas designated by Architect. 5.C.2. Do not proceed with remaining work until workmanship, appearance and performance are approved by Architect. 5.C.3. Refinish mock-up area as required to produce acceptable work.

1.6 COORDINATION

6.A. Coordinate layout and installation of underfloor distribution system with cast-in-place concrete work and with floor finish work.

6.B. Coordinate layout and installation of underfloor distribution system with metal decking work and with floor finish work.

6.C. Coordinate layout and installation of underfloor distribution system with cast-in-place concrete work and with floor finish work.

1.7 DELIVERY, STORAGE, AND HANDLING

7.A. Deliver underfloor distribution systems in factory labeled packages.

7.B. Store and handle in strict compliance with manufacturer's written instructions and recommendations.

7.C. Protect from damage due to weather, excessive temperature, and construction operations.

1.8 PROJECT CONDITIONS

8.A. Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.

PART 2 PRODUCTS

2.1 MANUFACTURERS

1.A. Acceptable Manufacturer: Wiremold, which is located at: 60 Woodlawn St. ; West Hartford, CT 06110; Toll Free Tel: 877-295-3472; Tel: 860-233-6251; Fax: 860-232-2062; Email: [email protected], [email protected]; Web: www.legrand.us/Wiremold.aspx

1.B. Substitutions: Not permitted.

16134-3 Requests for substitutions will be considered in accordance with provisions of Section 01600, and shall include documentation of UL listings and a sample of components.

2.2 UNDERFLOOR DUCT WITH JUNCTION BOXES

2.A. Acceptable Product: 2.A.1. Metal Underfloor Ducts: Walkerduct Pro Series as manufactured by Wiremold. 2.A.2. Metal Underfloor Ducts: Walkerduct IPS Series as manufactured by Wiremold.

2.B. Presets: 2.B.1. Presets shall provide capability to store 36 inches (1 meter) of cable in looped fashion inside preset. Rectangular presets shall have a minimum of 3-1/8 inches (79 mm) long oblong opening into duct. Presets shall have minimum internal volume of 13.7 cu in (88 sq cm). Inside dimensions shall be 4 inches wide by 4-5/8 inches (102 mm by 117 mm) long. Presets shall accept up to three-gang flush activations that provide up to 6 modular communication devices at each preset. 2.B.1.a. Pro Series Presets as manufactured by Wiremold. 2.B.2. Presets shall be a minimum of 7/8 inches (22 mm) over the top of the duct. Inserts shall have an inside diameter of 2 inches (51 mm) capable of housing 2-inch (51 mm) conduit, a beveled base which is expanded into the duct to form a continuous passageway, and a removable steel cap that is recessed to receive concrete. 2.B.2.a. IPS Presets as manufactured by Wiremold. 2.B.3. Provide 3-1/8 inch (79 mm) long oblong opening into duct of rectangular presets. 2.B.4. Presets: Zinc die cast, mounted 12 inches (305 mm) on center. 2.B.5. Presets: Zinc die cast, mounted 24 inches (610 mm) on center.

2.C. Configuration: Single or multiple ducts feeding single or multiple distribution ducts as indicated. Locate raceways on specified centers and include No. 2 duct or No. 4 duct, or both. 2.C.1. Single Level Junction Boxes: Provided with openings on 4 sides for duct connections and on 4 corners for conduit adapters. Completely ground all duct and conduit connections. Junction boxes shall provide for 1-1/4 inches (32 mm) bend radius of cables inside the box. Supply with any parts necessary to extend the height of each junction box as required by floor finishes. Access cover plates shall be 1/4 inch (6.4 mm) thick. Boxes shall be capable of withstanding a minimum 300 lb concentrated load as required by UL 884. 2.C.1.a. Junction Box Access Openings: Round. 2.C.1.b. Junction Box Access Openings: Square. 2.C.2. No 2 Duct: One-piece continuous weld construction. Weld shall be continuous and on the side of the duct to not impede drilling for after sets. 3-1/8 inch (79 mm) by 1-1/4 inch (32 mm) outside dimensions and a 3.34 square inch (2155 square mm) interior cross sectional area. 2.C.3. No 4 Duct: Weld shall be continuous and on the side of the duct to not impede drilling for after sets. 6-1/2 inch (165 mm) by 1-1/2 inch (38 mm) outside dimensions and an 8.72 square inch (5626 square mm) interior cross sectional area. 16134-4 2.C.4. Controlled Bend Radius: Provide at every turning point to maintain the integrity of the Category 5 and fiber optic cable installation. Minimum bend radius shall be 1-1/4 inches (32 mm) where cable is laid in. Minimum bend radius shall be 2 inches (51 mm) where cable is pulled through. The preset and duct shall provide adequate depth for 1.18 inches (30 mm) bend radius for mounting Category 5 and fiber optic cable connectors. 2.C.5. Lay-out: As indicated on drawings. 2.C.6. Material: 16 gauge (1.519 mm) galvannealed steel. 2.C.7. Material: 16 gauge (1.519 mm) galvanized steel. 2.C.8. Length: 10 feet (3048 mm). 2.C.9. Length: As indicated on drawings. 2.C.10. Provide heavy-duty junction box with internal supports and 3/8 inch (10 mm) thick access cover plates with 0.090 inch (2.3 mm) thick cover pan.

2.D. Activations: Activations shall be supplied in quantities equal to 15 percent of the supplied presets, or as scheduled. 2.D.1. Activations shall be the 525 Series, Multiplex Series, and 1200 Series service fittings as manufactured by Walker Systems. 2.D.2. Activations shall be the one, two or three gang brass, brushed aluminum or nonmetallic flush service fittings, the 525 Series, Multiplex Series or flush carpet plates as manufactured by Walker Systems, Inc. 2.D.3. Flanges and Cover Plates: 2.D.3.a. One-Gang: 2.D.3.a.1) Finish: Width inches (mm) by Length inches (mm). 2.D.3.a.2) Brass: 5.060 (128.524) by 6.080 (154.432). 2.D.3.a.3) Brushed Aluminum: 4.920 (124.968) by 5.940 (150.876). 2.D.3.a.4) Nonmetallic: 4.750 (120.650) by 5.750 (146.050). 2.D.3.b. Two-Gang: 2.D.3.b.1) Finish: Width inches (mm) by Length inches (mm). 2.D.3.b.2) Brass: 9.185 (233.299) by 6.080 (154.432). 2.D.3.b.3) Brushed Aluminum: 9.045 (229.743) by 5.940 (150.876). 2.D.3.b.4) Nonmetallic: 8.875 (225.425) by 5.750 (146.050). 2.D.3.c. Three-Gang: 2.D.3.c.1) Finish: Width inches (mm) by Length inches (mm) 2.D.3.c.2) Brass: 13.310 (338.074) by 6.080 (154.432) 2.D.3.c.3) Brushed Aluminum: 13.170 (334.518) by 5.940 (150.876) 2.D.3.c.4) Nonmetallic: 13.000 (330.200) by 5.750 (146.050) 16134-5 2.D.3.d. Brass, brushed aluminum and nonmetallic flanges shall be UL approved for use on carpet, tile, or wood covered floor applications. Brass and brushed aluminum flanges and cover plates shall have a buffed appearance and be protected with a lacquer finish. 2.D.3.e. Nonmetallic flanges and cover plates shall be provided in a black or brown finish as scheduled. 2.D.3.f. All flanges shall accommodate Ortronics workstation connectivity outlets and modular inserts, and the Wiremold Connectivity Modular Insert System. Modular inserts shall snap directly into each flange through use of a mounting bezel. 2.D.3.g. Brushed aluminum and nonmetallic cover plate options shall seat inside either the aluminum or nonmetallic flanges and be flush with the finished floor. Brushed aluminum and nonmetallic cover plate dimensions shall be 3.290 inches (83.566 mm) W by 4.310 inches (109.474 mm) L. Brass cover plate dimensions are 3.156 inches (80.162 mm) W by 4.182 inches (106.223 mm) L. 2.D.3.h. Brass cover plates shall seat inside only brass flanges and be flush with the finished floor. 2.D.3.i. All cover plate options shall provide for both power and communication services. 2.D.3.j. Communication covers shall accommodate Ortronics workstation connectivity outlets and modular inserts, and the Wiremold Connectivity Modular Insert System. 2.D.4. 525 Series Service Fittings: 2.D.4.a. Fittings shall be constructed of die-cast aluminum with a brushed satin finish. The fitting shall be a four piece design featuring a housing, baseplate and two faceplates to provide either power or communication services. Dimensions shall be as follows: 2.D.4.b. Housing: Overall 4.460 inches (113.284 mm) W by 3.125 inches (79.375 mm) D by 2.790 inches (70.866 mm) H. 2.D.4.c. Baseplate: Overall 4.460 inches (113.284 mm) W by 3.125 inches (79.375 mm) D by .250 inches (6.350mm) H. 2.D.4.d. Faceplate: Overall 4.110 inches (104.394 mm) W by 2.615 inches (66.421 mm) H. 2.D.4.e. Baseplate and housing shall feature cast, interlocking bases for attachment of housing to baseplate. Baseplate shall feature two (2) keyhole slots for alternate attachment on tabletop applications. 2.D.4.f. Fittings shall accept interchangeable faceplates allowing for ease of service change. Communication faceplates shall accommodate Ortronics workstation connectivity outlets and modular inserts, as well as the Wiremold Connectivity Modular Insert System. Modular inserts shall snap directly into each faceplate through the use of a mounting bezel. 2.D.4.g. The baseplate shall feature three openings that allow the fitting to be adjusted 3/4 inch (19.05 mm) to one side of center. Openings in the baseplate shall be (2) 1- 1/4 inches (31.75 mm) and (1) 1 inch (25.40 mm) to accept connection fittings. 2.D.5. Multiplex Series Service Fittings: 2.D.5.a. Fittings shall be constructed of aluminum with a brushed finish. 2.D.5.b. MP4 for single service applications shall feature 1 inch and 1-1/4 inches (25 mm 16134-6 and 32 mm) trade size knockouts in bottom of baseplate. Overall 4-3/4 inches (121 mm) W by 6-3/4 inches (171 mm) D by 3 inches (76 mm) H. 2.D.5.b.1) Overall Capacity shall be 55.3 cubic inches (906 cubic cm). 2.D.5.c. MP8 for dual service applications shall feature 1 inch and 1-1/4 inches (25 mm and 32 mm) trade size knockouts in bottom of one compartment, and a 1 inch (25 mm) trade size knockout in bottom of other compartment. Overall 8-3/4 inches (222 mm) W by 6-3/4 inches (171 mm) D by 3 inches (76mm) H. 2.D.5.c.1) Overall Capacity shall be 104.3 cubic inches (1709 cubic cm). 2.D.5.d. Baseplates shall feature one 1/2 inch (13 mm) and one 3/4 (19 mm) inch trade size concentric knockouts on each side. 2.D.5.e. Fittings shall accept interchangeable faceplates that accommodate either power or communication services. 2.D.5.f. Communication Faceplates: Overall 3.740 inches (95 mm) W by 3.649 inches (92.685 mm) H. 2.D.5.g. Power Faceplates: Overall 3.365 inches (85.47 mm) W by 3.656 inches (92.86 mm) H. 2.D.6. Flush Carpet Plate: 2.D.6.a. For applications requiring a basic service connection directly from the preset or afterset, flush carpet plates shall be available for either communication wire pull- through or power termination. Flush carpet plates shall be applied only in areas that are enclosed or protected. 2.D.6.b. Plates shall be constructed of 14 gauge (1.897 mm) galvanized steel. Dimensions shall be: 3-7/8 inches (98 mm) W by 4-5/8 inches (117 mm) L.

2.3 MODULAR WIRING AND ACCESS FLOOR SERVICE FITTING.

3.A. The system consists of factory-assembled connectors and cable assemblies intended to interface with electrical power wire management systems and electrical power devices such as raised floor boxes, service poles, poke-thrus, surface raceways, wireways, and convenience outlets.

3.B. System Components: 3.B.1. Main distribution boxes. 3.B.2. Secondary distribution boxes. 3.B.3. Cable extenders. 3.B.4. Cable whips. 3.B.5. Cable splitters. 3.B.6. Multi-conductor home run cables. 3.B.7. Wire connectors. 3.B.8. Service modules. 3.B.9. 16134-7 Power adapters.

3.C. Product: Walkerflex Modular Wiring System, as manufactured by Wiremold. Systems of other manufacturers may be considered equal if, in the opinion, and the written approval of the engineer, they meet all the performance standards specified herein.

3.D. Main Distribution Box (NDUP): 3.D.1. The distribution box converts conventional wiring into flexible wiring. It is installed at, or near, the home-run location under the floor. Grounding conductors shall be added as required by The National Electrical Code (NEC) and will comply with all requirements set forth. 3.D.2. The distribution box shall have one to twenty connection points mounted in a UL Listed enclosure. 1/2 inch (12.7 mm) and 3/4 inch (19.1 mm) knockouts shall be provided for through wiring and tapping of branch circuits in the field. Each wire connector shall have color-coded 10 AWG leads with 600V, 90 degree C insulation, and pre-stripped 5/8 inch (15.9 mm). Each wire connector shall have color coded keying configuration for easy identification. 3.D.3. The Main Distribution Unit shall be constructed of cold-rolled galvanized steel, four mounting supports which raise the unit 3/8 inch (9.52 mm) above the finished floor, The 3- 6-pin wire connector shall be secured to the unit with a lock nut or snap lock connector. The 8- 10-pin wire connector shall be secured to the unit with a snap lock nut. 3.D.4. The Main Distribution Unit shall be equipped with factory installed terminal blocks for wiring and circuit identification purposes. The terminal blocks shall be factory mounted on a terminal strip in accordance to factory specifications. 3.D.5. The Main Distribution Boxes shall be UL listed and identified as such on each cover. The Main Distribution Boxes shall be acceptable for use in air handling spaces other than ducts or plenums in accordance with NEC 300.22(c). Compliance with this requirement shall be marked on the cover. 3.D.6. The Main Distribution Boxes shall have labeling affixed to the outside of the cover plate indicating the circuit number and locations as it relates to the terminal blocks, manufacturing and testing date, manufacturing location. 3.D.7. The Main Distribution Box shall have a removable cover to allow for field connections to be made. 3.D.8. The quantity and types of distribution units shall be as required by the contract drawings. 3.D.9. The Main Distribution Boxes shall be shipped with protective caps to close off any unused connectors.

3.E. Secondary Distribution Box (NDUS): 3.E.1. The secondary distribution box converts conventional wiring into flexible wiring. It is installed at, or near, the home-run location under the floor. Grounding conductors shall be added as required by The National Electrical Code (NEC) and will comply with all requirements set forth. 3.E.2. The secondary distribution box shall have one to twenty connection points mounted in a UL Listed enclosure. 1/2 inch (12.7 mm) and 3/4 inch (19.1 mm) knockouts shall be provided for through wiring and tapping of branch circuits in the field. Each wire connector shall have color-coded 10 AWG leads with 600V, 90 degree C insulation, and pre-stripped 5/8 inch (15.9 mm). Each wire connector shall have color coded keying configuration for easy identification. 16134-8 3.E.3. The secondary distribution unit shall be constructed of cold-rolled galvanized steel, four mounting supports which raise the unit 3/8 inch (9.52 mm) above the finished floor, The 3- 6-pin wire connector shall be secured to the unit with a locking nut or snap lock connector. The 8- 10-pin wire connector shall be secured to the unit with a snap lock connector. 3.E.4. The secondary distribution unit shall be equipped with factory installed terminal blocks for wiring and circuit identification purposes. The terminal blocks shall be factory mounted on a terminal strip in accordance to factory specifications. 3.E.5. The secondary distribution boxes shall be UL listed and identified as such on each cover. The secondary distribution boxes shall be acceptable for use in air handling spaces other than ducts or plenums in accordance with NEC 300.22(c). Compliance with this requirement shall be marked on the cover. 3.E.6. The secondary distribution boxes shall have labeling affixed to the outside of the cover plate indicating the circuit number and locations as it relates to the terminal blocks, manufacturing and testing date, manufacturing location. 3.E.7. The secondary distribution box shall have a removable cover to allow for field connections. 3.E.8. The quantity and types of distribution unit shall be as required by the contract drawings. 3.E.9. The Main Distribution Boxes shall be shipped with protective caps to close off any unused connectors.

3.F. Wire Connector (NWC): 3.F.1. The wire connector is an interface between the flexible wiring system and the service fitting. The wire connector may either be supplied prewired on the access floor service fitting and distribution box or may be field-installed by the contractor. 3.F.2. Each wire connector shall contain #10 and/or #12 AWG copper wire with 600V, 90 degree C insulation. Each neutral wire shall be wired with #10 AWG copper wire. Each wire shall be color coded and stripped 5/8 inch (16 mm). 3.F.3. The wire connectors shall be constructed of a glass-reinforced, high impact, low smoke, nylon material which will be in accordance to UL2043 suitable for air handling spaces. The connectors shall pass UL7460 cold impact test. The wire connectors shall have a designated location for labeling which will designate panel feed and circuits. 3.F.4. The wire connector shall contain pin and socket type terminals which shall conform to UL183 and EIA364 Vibration testing criteria. The pin and socket type terminals shall be made of C155 Copper Alloy material with a thickness of .016 inch (0.4 mm). The terminals housed and secured in such a manner to eliminate the possibility of push back and/or misalignment of terminals. 3.F.5. Each wire connector shall contain a keying and color coding feature to ensure unlike wiring configurations are not mated together. 3.F.6. Each wire configuration shall have the main ground connection extended forward to ensure that the main ground connections are the first to mate and last to break for safety. 3.F.7. The quantity and types of wire connectors shall be supplied as required by the installation drawings.

3.G. Power CableSet (NCS): 3.G.1. 16134-9 The power cable provides power by connecting the Distribution Units to the service module or the service module to the modular wiring system. One or more Cable Set cables may be attached end-to-end to provide for any length required. 3.G.2. The cable set shall contain #10 and/or #12 AWG copper wire with 600V, 90 degree C insulation from one end to the other. Each neutral wire shall be wired with #10 AWG copper wire. Each wire shall be color coded and stripped 5/8 inch (15.9 mm). 3.G.3. The wire connectors shall be constructed of a glass-reinforced, high impact, low smoke, nylon material which will be in accordance to UL2043 suitable for air handling spaces. The connectors shall pass UL7460 cold impact test. The wire connectors shall have a designated location for labeling which will designate panel feed and circuits. 3.G.4. The wire connector shall contain pin and socket type terminals which shall conform to UL183 and EIA364 Vibration testing criteria. The pin and socket type terminals shall be made of C155 Copper Alloy material with a thickness of .016 inch (0.4 mm). The terminals housed and secured in such a manner to eliminate the possibility of push back and/or misalignment of terminals. 3.G.5. The wire connector housing shall be a 5-piece design (3- 6-wire) 5-piece design for the 8- 10-wire connectors. The wire connector housing will incorporate a locking feature which will produce an audible sound when engaged with the cable set, cable whip or cable splitter. 3.G.6. Each wire connector shall contain a keying and color coding feature to ensure unlike wiring configurations are not mated together. 3.G.7. Each wire configuration shall have the main ground connection extended forward to ensure that the main ground connections are the first to mate and last to break for safety. 3.G.8. The quantity and types of cable shall be as required by the contract drawings.

3.H. Power CableWhip (NCW): 3.H.1. The power cable provides power by connecting the DU to the service module or the service module to the modular wiring system. One or more CW cables may be attached end-to-end to provide for any length required. The cable whip shall have either a male or female connector head, factory attached. 3.H.2. The CW cable whip shall contain #10 or #12 AWG copper wire with 600V, 90 degree C insulation from the cable connector to the other which will be field terminated. Each neutral wire shall be wired with #10 AWG copper wire. 3.H.3. The wire connectors shall be constructed of a glass-reinforced, high impact, low smoke, nylon material which will be in accordance to UL2043 suitable for air handling spaces. The connectors shall pass UL7460 cold impact test. The wire connectors shall have a designated location for labeling which will designate panel feed and circuits. 3.H.4. The wire connector shall contain pin and socket type terminals which shall conform to UL183 and EIA364 testing criteria. The pin and socket type terminals shall be made of C155 copper alloy material with a thickness of .016 inch )0.4 mm). The terminals housed and secured in such a manner to eliminate the possibility of push back and/or misalignment of terminals. 3.H.5. The wire connector housing shall be a 5-piece design (3- 6-wire) 5-piece design for the 8- 10-wire connectors. The wire connector housing will incorporate a locking feature which will produce an audible sound when engaged with the cable set, cable whip or cable splitter. 3.H.6. Each wire connector shall contain a keying and color coding feature to ensure unlike wiring configurations are not mated together. 16134-10 3.H.7. Each wire configuration shall have the main ground connection extended forward to ensure that the main ground connections are the first to mate and last to break for safety. 3.H.8. The quantity and types of cable whips shall be as required by the contract drawings.

3.I. Power Adapter (NPA) (Optional): 3.I.1. The power adapter is an alternative interface between the flexible wiring system and the service fitting or other fixed electrical device. The power adapter may either be supplied prewired to the access floor service fitting or may be field installed by the contractor. This is designed for "daisy chain" application. 3.I.2. Each power adapter shall contain #10 and/or #12 AWG copper wire with 600V, 90 degree C insulation. Each neutral wire shall be wired with #10 AWG copper wire. Each wire shall be color coded and stripped 5/8 inch (15.9 mm). When fitted with a connector, provided by the contractor, the field-installed power adapter shall require a 1/2 inch (12.7 mm) trade size knockout in the service fitting for installation. 3.I.3. The power adapter shall have one port for power "IN" and one port for power "OUT". 3.I.4. The power adapter shall be constructed of a glass-reinforced, high impact, low smoke, nylon material which will be in accordance to UL2043 suitable for air handling spaces. The connectors shall pass UL7460 cold impact test. The wire connectors shall have a designated location for labeling which will designate panel feed and circuits. 3.I.5. The power adapter shall contain pin and socket type terminals which shall conform to UL183 and EIA863 Vibration testing criteria. The pin and socket type terminals shall be made of C151 copper alloy with a thickness of .0175 inch (0.45 mm). The terminals housed and secured in such a manner to eliminate the possibility of push back and/or misalignment of terminals. 3.I.6. The power adapter housing shall be a 5-piece design (3- 6-wire). The wire connector housing will incorporate a locking feature which will produce an audible sound when engaged with the cable set, cable whip or cable splitter. 3.I.7. Each wire connector shall contain a keying and color coding feature to ensure unlike wiring configurations are not mated together. 3.I.8. Each wire configuration shall have the main ground connection extended forward to ensure that the main ground connections are the first to mate and last to break for safety. 3.I.9. The quantity and types of power adapters shall be as required by the electrical circuitry of the contractor drawings.

3.J. Cable Splitter (NCBS): 3.J.1. The cable splitter is an alternative interface between the flexible wiring system and the service fitting or other fixed electrical device. This is designed for "daisy chain" application. 3.J.2. Each power adapter shall contain #12 AWG copper wire with 600V, 90 degree C insulation. The cable splitter shall have one port for power "IN" and two ports for power "OUT". The cable splitter shall be constructed of a glass-reinforced, high impact, low smoke, nylon material which will be in accordance to UL2043 suitable for plenum areas. The connectors shall pass UL7460 cold impact test. 3.J.3. The cable splitter shall contain pin and socket type terminals which shall conform to UL183 and EIA863 Vibration testing criteria. The pin and socket type terminals shall be made of C151 copper alloy with a thickness of .0175 inch (0.45 mm). The terminals 16134-11 housed and secured in such a manner to eliminate the possibility of push back and/or misalignment of terminals. 3.J.4. The power adapter housing shall be a 5-piece design (3- 6-wire) 5-piece design for the 8- 10-wire connectors. The wire connector housing will incorporate a locking feature which will produce an audible sound when engaged with the cable set, cable whip or cable splitter. The quantity and types of power adapters shall be as required by the electrical circuitry of the contractor drawings. 3.J.5. Each wire connector shall contain a keying and color coding feature to ensure unlike wiring configurations are not mated together. 3.J.6. Each wire configuration shall have the main ground connection extended forward to ensure that the main ground connections are the first to mate and last to break for safety.

3.K. Home Run Cables: 3.K.1. The home run cable shall be metal clad cable type MC) consisting of multiple type THHN 90 degree C insulation. The size of the conductors shall be as required by the circuitry of the contract drawings. 3.K.2. The home run cable can be equipped with oversized neutral conductor as required.

3.L. Service Modules: 3.L.1. AF Series Raised Floor Boxes as manufactured by Wiremold. 3.L.1.a. AF1 Series contains three separate compartments that accommodate a combination of both power and communication devices. AF3 Series provides four separate compartments to accommodate up to eight communications or power devices. Either series is available pre-wired to be used with or without connection to Cable Set Assemblies. 3.L.1.b. AF Series Floor Modules are constructed using a die-cast aluminum box and polycarbonate flange and cover. Boxes can be wired for connection in a "daisy- chain" style. Multiple device plate configurations are available. 3.L.1.c. The quantity and type of AF Boxes shall be as required by the contract drawings. 3.L.2. AC Series Raised Floor Boxes as manufactured by Wiremold. 3.L.2.a. AC Series Raised Floor Boxes are available in a variety of sizes accommodating one to four receptacles and 12 to 24 communication ports based on chosen device plate configurations. Boxes prewired for use with the Walkerflex System will have a cable set assembly or power adapter attached to the box to be connected to a distribution unit. 3.L.2.b. AC Series Floor Modules are constructed using a minimum 14-gauge steel box and a die-cast metal flange and cover. 3.L.2.c. "Daisy-chaining" wiring arrangement available using power adapter hardwired to AC Box. 3.L.2.d. The quantity and type of AC Box shall be as required by the contract drawings. 3.L.3. SAF21/2 Series Raised Floor Box as manufactured by Wiremold. 3.L.3.a. Provides two separate compartments that accommodate a combination of both power and communication devices. The SAF21/2 can provide two duplex receptacles and up to six communication devices. A variety of communication 16134-12 plate configurations are available, as well as pre-wiring for use with the Walkerflex System. Pre-wired boxes possess an attached cable set assembly for connection to a DU. 3.L.3.b. The quantity and type of SAF21/2 Box shall be as required by the contract drawings. 3.L.4. CRFB Series Round Raised Floor Box as manufactured by Wiremold. 3.L.4.a. The CRFB Series Round Raised Floor Box is a dual service box accommodating up to 4 power devices and up to six low voltage devices

3.M. Materials: 3.M.1. Any system component that is made from a polymeric compound shall be made from material that will meet UL requirements for air handling spaces other than ducts or plenum applications. The wire connectors or applicable system components shall contain up to ten pins or socket contacts rated for 20 amps, and up to 600 volts. Cable assemblies and connectors shall utilize a pin and socket contact design. Cable assemblies shall be constructed of a UL Listed cable utilizing THHN #10 and/or #12 AWG conductors. 3.M.2. The number of conductors in the cable assembly shall be as described by the installation drawings. All components shall be color coded for voltage, and keyed to avoid the possibility of electrical shock.

PART 3 EXECUTION

3.1 EXAMINATION

1.A. Examine conditions under which underfloor duct distribution systems are to be installed and substrate that will support systems. Do not proceed with work until unsatisfactory conditions have been corrected. 1.A.1. Notify the Architect/Engineer in writing of conditions detrimental to proper completion of the work. 1.A.2. Notify the Construction Manager in writing of conditions detrimental to proper completion of the work.

1.B. If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.

3.2 PREPARATION

2.A. Acceptability of Concrete Work: 2.A.1. Confirm that vapor barrier has been installed in slab-on-grade construction. 2.A.2. Confirm that welded wire fabric or mesh has been installed in the top 1 inch of the concrete slab to limit cracks in the slab due to expansion and contraction from temperature variations. 2.A.3. Concrete topping shall be as indicated on Drawings and as specified in Section 03300. No concrete containing chlorides from any source shall be placed over duct system. 2.A.4. 16134-13 Reinforced concrete design shall be in accordance with American Concrete for Buildings (ACI301-72) and ACI Building Code Requirements for Reinforced Concrete (ACI318-83). Concrete placement shall follow proper and accepted industry practice and be in accordance with ACI Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete (ACI304-73). 2.A.5. Vibrate concrete at all headers, junction boxes and duct to insure that the concrete completely fills underneath the duct system. Care shall be taken not to over vibrate. Shrinkage and temperature reinforcement above the duct systems shall be in accordance with ACI 318.

2.B. Confirm coordination of architectural and electrical drawings for dimensions prior to installation of duct system. Where conflicts exist between the architectural and electrical drawings, notify contract administrator.

3.3 INSTALLATION - GENERAL

3.A. Install in accordance with manufacturer's instructions for system components.

3.B. Install in accordance with complete system instruction sheets.

3.C. Install enclosures to be mechanically continuous and connected to all electrical outlets, boxes, device mounting brackets, and cabinets, in accordance with manufacturer's installation sheets.

3.D. Install enclosures to be electrically continuous and bonded in accordance with the National Electric Code for proper grounding.

3.4 INSTALLATION - UNDERFLOOR DUCT SYSTEMS

4.A. Install distribution raceway system and accessories in accordance with manufacturer's suggested installation instructions, and as specified. Locate the duct in strict accordance with the Drawings in order to maintain the electrical module spacing. Remove burrs or sharp edges on material.

4.B. Place duct on supports and align presets, attach couplings and duct supports to duct. Secure joints with grounding screws or clips. If using the Pro Series, attach alignment clips to preset on each piece of duct. Adjust duct supports and the duct distribution system so the top of the presets are 1/8 inch (3.2 mm) to 3/8 inch (9.5 mm) below the screed line (1/4 inch (6 mm) below on IPS).

4.C. Permanently fasten the duct supports to the supporting framework. Spacing between supports shall not exceed 5 feet (152 cm). The raceway system supports shall provide for 1-1/4 inches (32 mm) adjustment.

4.D. Use marker screw caps in place of the standard preset mudcaps in each preset at locations including: 4.D.1. Adjacent to junction boxes. 4.D.2. On each side of permanent walls. 4.D.3. At each end run of duct. 16134-14 4.D.4. On both sides of change of direction of duct.

4.E. Before concrete placement, make a final inspection of entire duct system. Seal gaps in the duct system with Walker 290G sealing compound or duct tape to prevent mortar or concrete from entering system. Level junction box cover plates and set flush with finished floor elevation of concrete.

4.F. After concrete fill placement and before wiring is installed, remove debris and other foreign materials from duct system. Install service fittings after installation of floor finishes. Cut floors as necessary, following duct manufacturer's recommendations. If moisture is present, remove cover plates from junction boxes as necessary to allow air circulation. Pull wire and cable from outlet insert toward junction boxes.

4.G. Do not use the installed raceway or duct system for working platforms or walkways. 4.G.1. Prior to pour, do not use underfloor system as a walkway/sidewalk. 4.G.2. After the pour, protect activation and junction box locations from construction equipment traffic.

4.H. Field test installed duct system to ensure compliance with UL 884, Article 354 of the National Electrical Code (NEC)

4.I. Field test installed duct system to ensure compliance with and be certified by Canadian Underwriters under cUL Standard C22.2, No. 80.

3.5 INSTALLATION - MODULAR WIRING SYSTEM

5.A. The electrical contractor shall furnish and install the 4-11/16 inches (119 mm) square junction boxes where transitions are made from the conventional hard-wiring mode to the manufactured wiring system. Distribution interfacing units will be provided by the manufacturer, properly coded for function and voltage. All cable assemblies shall be installed in accordance with the installation drawings. The system manufacturer shall provide job site instructions to the electrical contractor for review, installation, methods of shipping material, identifying system area, floor, panel board, and ceiling distribution box. The electrical contractor shall identify any changes to the advanced wiring system installation drawings made during the installation and attach to as-built drawings.

3.6 CLEANING AND PROTECTION

6.A. Clean exposed surfaces using non-abrasive materials and methods recommended by manufacturer.

6.B. Instruct Owner's personnel in proper maintenance procedures.

6.C. Protect in-floor system from damage. Do not allow equipment or heavy traffic over duct during construction period, without first installing ramps over the duct. Design ramps so that imposed loads are not transferred to the duct.

6.D. Replace system components that are damaged during construction at no additional cost to the 16134-15 Owner.

END OF SECTION

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