Orange County NC Website
Browse       Search
ORANGE COUNTY 230923-10 <br /> <br />Emergency Management Warehouse Building Dehumidification Extension of Existing Direct Digital <br /> Control System for HVAC <br /> <br />Multimode fiber optic cables shall be 62.5/125 micron Class Ia Graded Index Multimode Optical Fiber, 1 <br />OFNR, OFNP, Outdoor or Indoor / Outdoor (I/O) NEC Rating, FDDI Compliant. 2 <br /> 3 <br />Coating Diameter: 250 Microns 4 <br /> 5 <br />Core Eccentricity: 7.5% maximum (1.5% typical) 6 <br /> 7 <br />Numerical aperture: .275 plus or minus .015 8 <br /> 9 <br />Attenuation: 3.5 dB/km @ 850 NM / 1.50 dB/km @ 1300 NM 10 <br /> 11 <br />Bandwidth: 160 MHz at 850 NM / 500 MHz @ 1300 NM 12 <br /> 13 <br />Fiber connectors: ST .75 dB maximum insertion loss 14 <br /> 15 <br />Cable bend radius: 10 times diameter 16 <br /> 17 <br /> Single mode fiber optic cables shall be 8.3/125 micron Class IVa Dispersion-Unshifted Single-mode 18 <br />Optical Fiber, OFNR, OFNP, Outdoor or Indoor / Outdoor (I/O) NEC Rating, FDDI Compliant. 19 <br /> 20 <br />Coating Diameter: 250 Microns 21 <br /> 22 <br />Core Eccentricity: 7.5% maximum 23 <br />(1.5% typical) 24 <br /> 25 <br />Attenuation: 0.5 dB/km @ 1310 NM/1550 NM 26 <br /> 27 <br />Zero dispersion wavelength 1300 -1320 NM 28 <br /> 29 <br />Cable bend radius: 10 times diameter 30 <br /> 31 <br />Control and Interlock Wiring: All 24V-120V control and interlock wiring shall comply with Section 230511 and the 32 <br />following: 33 <br /> 34 <br />Conductors: 35 <br /> 36 <br />All wire and conducting components shall be THWN standed copper. 37 <br /> 38 <br />Conductors shall be continuous from device to device and no splices shall be made except 39 <br />within device or junction boxes. Wire nuts and crimp slices are prohibited. 40 <br /> 41 <br />Control wiring shall be color-coded in accordance with reviewed submittals. 42 <br /> 43 <br />Where conductors pass through a junction box or connect to a device, the conductor and the 44 <br />box shall be tagged to indicate the circuit and/or terminal number shown on the submittal 45 <br />drawings. 46 <br /> 47 <br />Raceway: Provide electrical metallic tubing (EMT), minimum 3/4" size. Fittings shall be steel insulated 48 <br />throat compression type. Set screw fittings, fittings constructed of alloys of aluminum or fittings 49 <br />of the indenter type are prohibited. Flexible metallic raceway may be utilized for the last 24" up to the 50 <br />connection point for devices, sensors, etc. 51 <br /> 52 <br />Routing of Raceway: Exposed raceway shall line up work true to adjacent surfaces and be placed in a 53 <br />workmanlike manner. Raceway shall be run at right angles to building lines; this requirement does not 54 <br />apply to raceway located below concrete placed as a part of this project. Raceway shall be sturdily 55 <br />supported and separated in a manner satisfactory to the A/E; raceway shall not be supported by the 56 <br />ceiling grid or ceiling grid support wires. In general, all raceway is to be concealed and routed 57 <br />overhead, below the floor, or in walls except in electrical or mechanical equipment rooms. Raceway in 58 <br />such rooms may be surface mounted. 59 <br /> 60 <br />DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951