14-16 Provide for a meter in accordance with the requirements of the utility company's condition of
service. A meter base for a self -contai ned meter may be mounted on the service pole or back of the control enclosure as indicated in the plan s. A current transformer (CT) cabinet and meter base may be mounted in either location if requested by the utility company. Do not install CT cabinet or meter base prior to coordination with the utility company. Use stranded copper Type USE conductors sized as shown in the plans for the service lateral . Install conductors in rigid galvanized steel (RGS) conduit above ground and PVC conduit below ground . 1407 -4 MEASUREMENT AND PAYMENT Electric Service Pole ____ will be measured and paid as the actual number of the appropriate length and class electric service poles inst alled and accepted. Electric Service Lateral ____ from service pole to control panel will be measured and paid as the actual number of linear feet of the appropriate size and type service lateral installed and accepted. Measurement will be along the longest conductor from electrical terminal to electrical terminal. Payment will be made under: Pay Item Pay Unit Electric Service Pole ____ Each Electric Service Lateral ____ Linear Foot 1408 -1 DESCRIPTION Furnish and install an entire control system, including enclosure, control panel, photocell, switches, contactors, breakers, terminal blocks, wiring, concrete foundation and surge protection device . Furnish and install current transformer cabinet when required by the utility company. The control system will be standard electrical components in a stainless steel enclosure mounted on a metal pole with a concrete foundation a s shown in the contract. 1408 -2 MATERIALS Refer to Division 10. Item Section Conduit 1091 -3 Ground Rod 1091 -6 Portland Cement Concrete , Class A 1000 -3 Wire and Cable 1091 -2, 1400 -2 Provide concrete foundations and wire in accordance with the Standard Specifications . Use a piece of 4 inch rigid galvanized steel conduit with galvanized steel threaded conduit cap, embedded in concrete as shown in the plan s for mounting the control system . Provide a NEMA type 3R stainless steel enclosure with external stainless mounting flanges, drip shield, back panel and continuous hinge door with a print pocket. Provide a door closing mechanism interlocked with a flange mounted operator handle to prevent the opening of the door with the service circuit breaker in the ON position, except by use of safety override devices. Provide an enclosure approximately 36 inches (h) x 30 inches (w) x 10 inches (d) unless noted otherwise in the plan s. Provide only openings necessary for the entrance of conduits as shown in the plan s. Do not use knockouts. Ensure the enclosure conform s to NEC Article 37
14-17 312 and mount the devi ces so th e NEC clearances will be provided, except use 1 1/2 inches
where not specified or noted in the tables for minimum wire bending space. Use galvanized slotted steel framing channel with straps and bolts, sized as shown in the plan s for the mounting brackets and hardware for attaching the enclosure to the pole. Use galvanized finish on the brackets and hardware and coat all field cuts or scratches with organic zinc repair paint meeting Article 1080 -9. Perform all galvanizing in accordance with Sectio n 1076. Provide a neutral bar bonded to the panel with sufficient box lug type terminals to accept the required number of wires. Mount components to the back panel with manufacturer supplied mounting brackets or permanently attached screw studs. Use a serv ice circuit breaker providing a minimum interrupting rating of 22,000 A. Provide a thermal magnetic, molded case, permanent trip breaker. Provide multi -tap, solderless, load side box lugs or distribution terminal blocks of the appropriate size. Use insulating material approved for NEMA 3R applications. Provide a service barrier as required by NEC Article 15 230-62(C) for the line side lugs. Provide a breaker with a voltage and amperage rating as indicated in the plan s. Provide a single pole, open type control circuit breaker rated for the voltage shown in the plans with a minimum current interrupting capacity of 5,000 A and a high magnetic trip setting of 15 A. Provide three 60 A, 4 pole mechanically held contactors that have coil clearing contacts and coil voltage rating as indicated in the plan s. Contactor latching with hooks or semi -permanent magnets is unacceptable. Use a control relay rated for the voltage shown in the plans with one normally open contact and one normally closed contact and has a continuous load rating and inductive make rating greater than that required by the mechanically held contactor. Use a coil rated for the voltage shown in the plans . Use a heavy duty 3 -position maintained contact selector switch in a surface mount (NEMA 1) enclosure with a legend consisting of On- Off-Auto and having continuous current rating of 10 A for the contacts. Selector switch contacts shall be rated for the v oltage shown in the plans. Use feeder circuit breakers which are rated 14,000 A minimum interrupting capacity and have an open type molded case with a non- adjustable thermal magnetic trip setting as noted in the plans. Use a delayed response encapsulated cadmium -sulfide photo- control , suitable for use on an operating voltage range of 105 V to 285 V and nominal control voltages of 120 V, 208 V, 240 V and 277 V. Ensure the control is rated for 1,000 W resistive load or 1,800 V -A of inductive load. Set the light -level within a range of 1.0 to 3.0 footcandles. Have internal protection for surges in excess of 2,000 V peak for the control. Mount a receptacle directly to the top of the enclosure with a weatherproof fitting. Use controls and receptacles which conform to NEMA Standard C136.10 for roadway lighting equipment. Use a Type 1 surge protection device (SPD) meeting UL 1449 and UL 96A , designed to contain and arrest an arc of 40,000 A and with a short circuit current rating of 200,000 A . Install the SPD on the load side of the service breaker. Use terminals and lugs rated for the connection of the appropriate size copper conductors. All conductors shall be made of copper and neatly wrapped in bundles or run in plastic raceways. Provide a scaled drawing s howing the location, brand and catalog number of each component of the control system for approval.