Each ground rod clamp shall have a minimum of 1 1/2 in. of contact between the grounding conductor and the ground rod. The grounding conductor shall be continuous between the bonding plates inside the tower shaft handhole and the grounding rod termination point. 400 Bends of conductors shall form an angle of 90° or more. Unsupported conductors shall have a radius of bend 8 in. or greater.
shall be a hooked deformed reinforcing bar or a hooked smooth bar. The bolts shall be in accordance with ASTM A615 modified to a minimum yield stre ngth of 75,000 psi. The top 12 in. of each anchor bolt, nut, and washer shall be hot-dip galvanized in accordance with ASTM A153 or be mechani cally galvanized and in accordance with 410 the coating thickness, adherence, and quality requirements of ASTM B695, class 55. (c) Wire and Cable Lighting circuit cables for direct burial shall be enclosed in polyethylene conduit.
This conduit shall be in accordance with ASTM D3485 either medium density Type II, class C or high density Type III, class C smooth wall, coilable polyethylene conduit for preassembled wire and cable. The diameter of the conduit shall be 1 1/4 in for the standard 4-No. 4 conductor cable. 420
The cable shall consist of four separate electrically insulated conductors installed in the duct so any one conductor may be ea sily removed without damage to the other two. The conductors shall not be cabled or twisted together. The conductors shall be stranded copper of the No. 4 AWG size. Conductors shall be stranded in accordance with ASTM B8, class B. Each conductor shall be insulated with crosslinked polyethylene manufactured in accordance with Insulated Power Cable Engi neer Association standard WC 70/ICEA 430 S-95-658-1999, Nonshielded 0-2kV Cables . Each conductor shall have a 600-volt rating, be UL listed, and have an XHHW conductor temperature rating not to exceed either 90°C in dry conditions and 75°C in wet conditions. Each of the four conductors shall be imprinted at regular intervals with the following description: Type XHHW; 600 volt; UL; the conductor’s AWG size and metal or alloy; the manufacturer’s name, trademark, or other distinctive marking by which the product can be readily identified. Identification coding of the conductors shall be accomplished by complete color 440 coding. Color coding of the insulation shall be homogeneous throughout the entire 920.01 1156 depth and length of the jacket. The colors shall include one black, one white, one red, and one green.
This wiring shall consist of two 1/C No. 10 AWG, 600 volt, THWN or MTW insulation, stranded copper wire. 4. Sign and Underpass Wiring The wiring from the switch box to the last luminaire shall be 3/C copper stranded 450 No. 10 AWG conductors and shall have imprinted at regular intervals along the length of the insulation jacket the following designation: No. 10 AWG, type MTW or THWN, or Gasoline and Oil Resistant II or AWM, 600 volt, UL. The conductor classifications shall be UL listed and have the following minimum temperature ratings: MTW 90°C, THWN 75°C, and AWM 105°C. It shall be installed in 3/4 in. conduit between the breaker box and luminaires.
conductor shall be No. 6 AWG stranded copper with 600 volt, XHHW-XLP type insulation.
The power cable shall be a 4/C No. 10 AWG copper insulated electrical cable Type “SO” modified for a repetitive reeling operation. It shall be in accordance with 470 ASTM B3, ASTM B173, and IPCEAS-19-83. Conductor insulation shall be in accordance with ASTM D1693 and IPCEAS- 19-81, Paragraph 3.12. The sheath or jacket shall meet or exceed IPCEAS-19-81, Paragraph 7.6.20.1.1. Conductors shall be color coded. The power cable shall have a heavy-duty 600 volt, AC 30 amp rated electrical plug capable of disconne ction in a safe manner under load conditions. The electrical plug shall be moisture resistant and waterproof at both transition points.
Connectors shall be a compression type of the proper size with only one conductor per groove in the fitting. They shall be designed specifically for use on aluminum and copper conductors, prefilled with an oxide inhi bitor, and installed with a hydraulic tool according to the manufacturer’s specifications . After installation, the connectors shall be fully insulated and weatherproofed. The connectors installed in underground handhole shall be taped and then waterproofed as shown on the plans. 920.01 1157 (d) Luminaires Underpass, Roadway, and High Mast models shall be selected from the QPL of Luminaires. 490
the plans. Luminaires, including primary fuse protection, surge protection devices, power drivers, and other major components, shall be rated for a minimum operational life of 50,000 hours at 77°F. Luminaires shall be a single, self-contained device, not requiring on-site assembly for installation. Connectors shall be crimp or cage-clamp type. 500 All internal components shall be adequately supported to withstand mechanical shock and vibration. Luminaires shall be tested in accordance with ANSI C136.31, 2G loading or ANSI C136.31, 3G loading for luminaires on bridges. Testing about all axes shall be accomplished with a single luminaire. Luminaires shall include gasketing that will completely seal out dust, moisture, and insects from the interior of the optical assembly and retard the formation of an undesirable film from gaseous vapors on the interior of the optical assembly. The optical assembly shall be rated at IP 66 or better in accordance with ANSI/IEC 60529. Power drivers, and surge protection devices shall be rated at IP 65 or better. 510 Light sources supplied for luminaires shall be electrically compatible with the luminaires. Luminaires shall include an integrally built-in power driver. The luminaire shall operate satisfactorily in temperatures from -40°F to 122°F with an input voltage variation of ±10% of the rated operating voltage specified. Power consumption, wattage, shall not exceed that which is show n on the plans. The lu minaire power factor shall be 0.9 or greater. The power driver, or combination of power drivers if more than one is used in the luminaire, shall have a Mean Time To Failure, MTTF, of 1,000,000 hrs as determined 520 by Telcordia SR 332, Issue 3 or MIL-HDBK-217F methodology. The MTTF estimate shall be for the driver as a complete and functioning unit. Total Harmonic Distortion, THD, of the power driver shall not exceed 20% as verified by ANSI C82.77. Roadway lighting luminaires shall have a precision-cast aluminum housing with weatherproof finish. Refractors or lenses shall be scratch resistant and made from high impact, heat-resistant glass, or UV inhibited, high impact polycarbonate plastic. If utilized, reflectors shall be detachable and made of highly specular aluminum. 530 Luminaires shall have seven wire photocontrol receptacle in accordance with ANSI C136.41 with shorting cap for adaptive lighting control. 920.01 1158 Luminaires shall exhibit a color temperature in the range of 3500K to 4500K per ANSI C78.377 and a minimum Color Rendering Index of 70 as verified by the IESNA LM-79 test. A Surge Protection Device, SPD, shall be included to protect the luminaire from damage and failure from transient voltage and currents. The SPD shall conform to UL 540 1449 and shall be tested in accordance with, and survive, the procedure in ANSI/IEEE C62.41.2 definitions for standard and op tional waveform for location category C- High. Once the surge current has subsided, the SPD shall automatically restore normal operation and reset to a state ready to receive the next surge. Luminaires shall comply with Title 47 CFR Part 15, Class A on unlicensed transmissions in a business, commercial, or industrial environment.
Underpass and post top mounted luminaires shall be protected against salt spray and conform to ASTM B117, 2,000 hrs time horizon. 550 Luminaires shall include vandal shields when installed on an underpass or signs on bridge brackets and when otherwise specified. The vandal shield shall be made of a tough durable plastic, such as Lexan, mounted in a rugged galvanized steel or aluminum frame, and shall withstand severe impact without being damaged or allowing the refractor to be damaged. It shall be fastened securely to the luminaire so it cannot be removed from the outside and shall not interfere with the light distribution pattern. It shall protect the face of the refractor and if ventilation is necessary, the ventilating apertures shall be arranged so that they do not admit a probe of a diameter greater than 1/4 in. 560 Luminaire shall be aimable toward the required direction.
LEDs shall be connected so that the loss of one LED will not result in the loss of the entire luminaire. LED circuitry shall prevent flickering to the unaided eye at the voltage specified on the plans and the range indicated herein. LEDs shall deliver a minimum of 85% of the initial rated lumens after 50,000 hours of operation at 130°F ambient temperature as indicated by LM-80 lumen 570 maintenance test of the light source as calculated by IESNA TM-21, L85 > 50,000 hrs. A passive thermal management system to dissipate the heat generated by operation shall be provided. Fans or other mechanical cooling systems shall not be used.
The thermal management system shall maintain temperatures during the operation of the luminaire to be within the limits established by the Power Driver Lifetime and LM-80 testing. 580 920.01 1159 b. Light Emitting Plasma Luminaires Plasma emitters shall deliver a minimum of 70% of the initial lumens after 50,000 hrs of operation.
against vibration. 590
bolt slipfitter capable of adapting to a 2 in. mounting bracket that is adjustable ±5° for leveling. Luminaires shall be adjustable in the horizontal and vertical directions to meet the specified IESNA light distribution pattern. Luminaire weight shall not exceed 53 lb and its projected area shall not exceed 2.4 sq ft. 600
Sign and underpass luminaires shall be LED and operate on no more than 150W of power. Sign luminaires shall have a shield that blocks the view of the refractor from an approaching motorist. This shall be accomplished by the design of the housing or by a shield fabricated from sheet aluminum, approximately 0.05 in. thick, and of sufficient size to be fastened onto the horizontal edge of the refractor holder with self tapping screws and placed between the refractor and approaching traffic. Aluminum and steel structural members for luminaire supports shall include 610 aluminum conduit, conduit clamps, fittings, and stainless steel screws.
All circuit breaker enclosures shall be NEMA 4/5. 1. Circuit Breakers for Type II Service Point The cabinet and hardware shall be weatherproof and rain tight. The enclosure shall have provisions for padlocking. The fastener and mounting hardware shall be plated brass, stainless steel, or aluminum. The enclosure shall be made of 14 gauge aluminum, or 14 or 16 gauge stainless steel. The circuit breaker operating handles for 620 manual tripping shall be concealed inside the enclosure. Computation of branch circuits shall be based on the National Electrical Code Standard Limitation of loading breakers to 80% of their rated current. Additional details shall be as shown on the plans. 920.01 1160 2. Circuit Breakers fo r Sign and Underpass Circuits Sign and underpass circuit protection shall be provided by two single pole, 240 volt AC, 120 volt for 120/240 volt service, circuit breakers with ampere rating of 200% of the normal load. The circuit breakers shall have provisions for padlocking 630 externally. The circuit breaker operating handles for manual tripping shall be concealed inside the enclosure. The enclosur e shall be made of aluminum or stainless steel. Additional details shall be as shown on the plans.
The enclosure shall be furnished with two single pole, 30 ampere, 480 volt AC circuit breakers with a minimum symmetrical RMS interrupting capacity of 14,000 amperes. The breakers shall be accessible through the pole handhole. The circuit breaker operating handles for manual tripping shall be external to the enclosure. The enclosure shall be made of aluminum or stainless steel. Additional details shall be as 640 shown on the plans.
These breakers shall have the following features:
temperature changes over their operating environment of -40°F to 185°F,
the ON position.
Multiple relay switches with photocell receptacles shall have a two-pole relay for 660 connection to a 120/240 or 240/480 volt, three-wire, single phase, 60 Hz power supply. The relay switch components shall match the service voltage being supplied. The unit shall contain two single pole circuit breakers with a minimum rated capacity to withstand 100% of the rated ampere load. The circuit breakers shall trip at not less than 125% of the rated load capacity. Control circuit arresters for lighting protection and a manual control selector switch shall be included within the unit. The enclosure shall be a cast aluminum weatherproof case, with a hinged cover, having provisions for padlocking and a hanger for pole or wall mounting.
A Type C certification in accordance with 916 shall be provided for the materials in this section unless otherwise specified. 920.01 1161
The junction box shall be polymer concrete , of concrete-gray color, with a cover rating of 20,000 lb. (i) Handholes Handholes shall be in accordance with 922. 17 except the cover shall be with the logo imprint of “LIGHTING”. 680