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Home My WebLink AboutAgenda Report - November 18, 1992 (61)4`+ OF CITY OF LODI COUNCIL COMMUNICATION c4<rppN�`' AGENDA TITLE: Specifications and Advertisement for Bids for Electrical Cable for the Electric Utility Department MEETING DATE: November 18, 1992 PREPARED BY: Electric Utility Director RECOMMENDED ACTION: That the City Council approve the specifications and authorize advertisement for bids for the purchase of 30,000 feet of #2/0 15kV underground primary conductor, and 10,000 feet of 600 -volt secondary triplex for the Electric Utility Department. BACKGROUND INFORMATION: This cable will be needed for installation in eleven new residential and commercial subdivisions sched- uled to begin during the next six to twelve months, and to provide an inventory for routine or emergency maintenance of the existing electrical system. Some of the developments where this cable will be used are Sunwest Plaza 2, Johnson Ranch 2, Century Meadows 1, 2, and 3, Towne Ranch 1, and the new Target store. As home construction continues beyond the 12 -month horizon, additional 600 -volt triplex will be needed, and bids will be solicited at that time. FUNDING: Included in the Electric Utility Department's 1992/93 fiscal year budget. Estimated cost: $40,000 BID OPENING DATE: December 22, 1992 Henry J. FTc�`ctric Utility director Prepared by Joel Harris, Purchasing Officer APPROVED THOMAS A. PETERSON .ecvUeO P9Der City Manager cc EDUIPMENT SPECIFICATIONS REV. 4/10/90 600 -VOLT XLPE TRIPLEX CABLE GENERAL: CABLE FURNISHED UNDER THESE SPECIFICATIONS SHALL BE LIMITED TO CROSS-LINiED POLYETHYLENE INSULATED CAFLE RATED 600 VOLTS AND SUITABLE -OR INSTALLATION IN DUCTS OH FOR DIRECT BURIAL IN EARTH, IN WET OR DRY LOCATIONS, WITH NORMAL CONDUCTOH TEMPERATURES UP TO 90 DEGREES C. CABLES FURNISHED SHALL MEET THE REQUIREMENTS OF THE APPLICABLE NEMA, ICEA, AEIC AND ASTM STANDARDS, LATEST EDITION THEREOF, UNLESS OTHERWISE NOTED IN THIS SPECIFICATION. 107-11144=F A. CONDUCTOR: ' THE CONDUCTOR SHALL BE ALUMINUM ALLOY, EC GRADE, 1/2 TO 3/4 HARD, CLASS B STRANDING. R. INSULATION: PHASE CONDUCTOR INSULATION SHALL BE SINGLE -PASS, BLACK, CROSS-LINKED POLYETHYLENE. THE NEUTRAL CONDUCTOR SHALL HAVE YELLOW XLPE INSULATION OH BLACK. XLPE INSULATION WTTH YELLOW EXTRUDED STRIPES. C. ASSEMBLY: THE ASSEMFLED CABLE SHALL CONSIST OF PHASE AND NEUTRAL CONDUCTORS TWISTED TOGETHER WITH A LAY NOT LESS THAN 50 NOR MORE THAN 60 -IMES THE OUTSIDE DIAMETER OF @NE OF THE PHASE CONDUCTORS. ALL CARLE ENDS SHALL BE SEALED TO PREVENT THE ENTRPNCE OF MOISTURE. D. IDENTIFICATION: EACH CONDUCTOR SHALL HAVE A PERMANENT MARKING SHOWING THE MANUFACTURERS NAME, VOLTAGE RATING, CONDUCTOR SIZE AND TYPE OF INSULATION. E. TESTING AND GUARANTEE: TESTING OF CABLE SHALL BE PERFORMED ACCORDING TO PROCEDURES SET FORTH BY THE ICEA, AEIC AND ASTM. CERTIFIED COPIES OF PASS/FAIL TEST RESULTS SHALL BE SUPPLIED. ANY CABLE FOUND DEFECTIVE EITHER UPON INSPECTION, TESTING OR INSTALLATION WILL BE RETURNED AT THE MANUFACTURER'S EXPENSE. PAGE. NO. I F. SPECIFIC REQUIREHENTS: ANY CONDITIONAL BIDS SUCH AS "SUBJECT TO AVAILABILITY IN STOCK" WILL BE REJECTED. G. SHIPPINC,,; CABLE ENDS SHALL BE ADERUATELY SEALED WITH A WATER SEAL -TYPE MATERIAL AND PLASTIC END CAPS SECURED BY TAPE TO PREVENT THE PENETRATION OF MOISTURE. THERE SHALL BE NO WATER IN THE STRANDED CONDUCTOR OF THE CABLE WHEN THE REEL IS SHIPPED. ALL SHIPMENTS SHALL BE PREPAID, F.O.P. LODI, CALIFORNIA. REELS SHALL BE SHIPPED UPRIGHT: REELS: A. MAKEUP: THE SPECIFIED CONDUCTOR SHALL BE SUPPLIED ON NEMA STANDARD REELS AND IN ACCORDANCE WITH TABLE I AS SHOWN BELOW. TABLE I CONDUCTOR SIZE CODE WORD FHASE (NEUTRAL) HATERIAL NEMA STANDARD REEL CODE NO. #2 f#2) AWG RAMAPO/YES ALUM. 3624 #i1/0 (#!/O) AWG BERGEN/YES ALUM. 7,624 350 MCM (#4/4) AWG WESLEYAN/YES ALUM. 5432 OR 7236 @ PACKAGING: EACH CABLE REEL SHALL HAVE ADEQUATE PROTECTIVE COVERING ACROSS THE FLANGES, SUCH COVERING TO CONSIST OF WOOD MEMBERS FROM FLANGE TO FLANGE COVERING THE ENTIRE CTRCUKFERENCE OF THE REEL (LAGGING), THE LAGGING SHALL. BE NAILED TO THE FLANGE PERIMETERS AND SHALL BE FURTHER SECURED WITH AT LEAST TWO STEEL BONDS AROUND THE REEL. EACH END OF THE CABLE SHALL BE FIRMLY SECURED TO THE REEL. C. MARKING: EACH REEL SHALL BE MARKED WITH A DURABLE LAPEL SECURELY ATTACHED TO A FLANGE OF THE REEL AND PLAINY MARKED STATING THE DESTINATJON, THE PURCHASER'S ORDER NUMEER, SHIPPING LENGTH OF CABLE ON REEL, TYPE AND SIZE OF CONDUCTORS, INSULATION TYPE AND THICKNESS, VOLTAGE RATING AND MAN(IFACTURFR •S I DENT i FI CAT I I N NUMBER. PAGE NO. 2 CITY OF LODI ELECTRIC UTILITY DEPARTMENT EOUIPMENT SPECIFICATIONS 15 -KY, XLPE INSULATED, JACKETED AND NON-JACKETED, CONCENTRIC NEUTRAL CABLE Cable furnished under these specifications shall be limited to cross-linked thermosetting polyethylene (XLPE) insulated concentric neutral cable rated 15,000 volts and suitable for installation in ducts or for direct burial in earth, in wet or dry locations, with normal conductor temperatures up to 90°C. Cables furnished shall meet the requirements of the applicable NEMA, ICER, AEIC and ASTM Standards, latest edition thereof, unless otherwise noted in this Specification. 2.0 CABLE A. Conductor Insulated conductor shall be aluminum alloy, EC Grade, Ciass 8, stranded or compressed strand, three-quarter or half hard. 0. Conductor Shield The conductor (strand) shielding shall be extruded and shall consist of virgin black semi -conducting cross-linked, thermosetting polyethylene. The extruded shield shall have an average thickness of not less than 15 mils when measured over the top of the strands and a minimum thickness of not Jess than 12 mils. The outer surface of the conductor shield shall be cylindrical and shall be firmly cbonded to the overlaying insulation. S-1 11/06/92 S`CABLEX/TXTU.01D C. Insulation Insulation shall be unfilled, semi -transparent, cross-linked thermosetting polyethylene extruded directly over the conductor shield. The average insulation thickness shall not be less than 220 mils and the minimum thickness shall not be less than 90% of this value. D. Insulation Shield The insulation shielding shall be extruded and shall consist of one layer of virgin black semi -conducting, cross-linked thermosetting polyethylene, compatible with and extruded over the insulation. It shall maintain its shielding properties after exposure to normal cDerating .--1pAratur�s ?nd environs. The insulation shield compound and chi --ss shall be in accordance with ASIC Standard. E Construction Method Conductor shield, insulation and insulation shield shall be installed on the conductor using the triple extruding, dry cure method. F. Concentric Neutral The concentric conductor shall be composed of a number of round annealed bare (uncoated) copper wires helically wrapped around the cable. The number and size of the neutral wires shall be as specified in Table I. The length of lay shall not be less than 6 nor more than 10 times the diameter over the concentric wires. G. Overall Jacket (if required on Proposal Form) An extruded, encapsulating and insulating layer of linear, low density black polyethylene, (Union Carbide DFDB 6425, British Petroleum BP D 9956 or approved equivalent) shall be applied over the concentric s-2 11/06/92 S#CABLEX/TXTU.01D neutral wires i n accordance with ICEA S-66-524, Part 4.3, except where modified by this Specification. The minimum thicknesses of this encapsulating jacket over the concentric wires shall be as follows: Conductor Size AAG o r KCM) #2 #2/0 750 & 1,000 Minimum Thickness (Mils) 50 80 110 R Testing and Guarantee Testing of cable shall be performed according to procedures set forth by the ICEA, AEIC and ASTM Standards. Certified copies of pass/fail test results shall be supplied. Any cable found defective either upon inspection, testing or installation w i I I be returned at the manufacturer's expense. 1 _ Specific Requirements Any conditional bids such as "subject to availability in stock" will be rejected. Cable shall be furnished according to Table 1 below: TABLE I Conductor Size Conc. Neutral NEMA AVVG or KCM Size - AWG Material Insulation Reel Code (No. of Strands) (Min. No. of Wires) Phase (Neut.) Thick. (Mils) Number #2 (7) # 14 (10) Alum. (Cu) 220 5832 #2/0 (19) til4 (9)/#12 (6) Alum. (Cu) 220 5832 750 (61) #12 (24)/#10 (15) Alum. (Cu) 220 7848 1,000 (61) #.10 (20) Alum. (Cu) 220 7848 NOTE: Refer to proposal forms for specific sizes, quantities and jacketing, requirements. s-3 11/06/92 SKABLEX/TXTU.010 J. Reels 1. Makeup and Length: Reels are to be shipped full to their nudam capacities. 2. Packaging: Each cable reel shall have adequate protective covering across the flanges. Such covering to consist of wood members from flange to flange covering the entire circumference of the reel (lagging). The lagging shall be nailed to the flange perimeters and shall be further secured with at least two steel bands around the reel, Each end of- the cable shall be firmly secured to the reel. 3. Marking: Each reel shall be marked with a durable label securely attached to a flange of the reel and plainly marked stating the destination, the purchaser's order number, shipping length of cable on reel, weight of reel (tare weight), total weight of cable on reel, type and size of conductor, insulation type and thickness, voltage rating and manufacturer's identification number. K. Shipping Cable ends shall be adequately sealed with a water seal -type material and plastic end caps secured by tape to prevent penetration of moisture. There shall be no water in the stranded conductor of the cable when the reel is shipped. Reels shall be shipped upright. All shipments shall be prepaid, F.O.B. Lodi, California. 0 S-4 11/0E/92 S#CABLEX/TXTU.OID