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2024 Pavement Maintenance Overlay SPECIAL PROVISIONS PW# 3823 73 8-20.GR8 1 Illumination, Traffic Signal Systems, Intelligent Transportation Systems, and 2 Electrical 3 4 8-20.2.GR8 5 Materials 6 7 8-20.2.INST1.GR8 8 Section 8-20.2 is supplemented with the following: 9 10 CNH 8-20.2(9-29.3(2)) DETECTOR CABLE.DOCX 11 Fiber Optic Cable, Electrical Conductors, and Cable 12 13 Section 9-29.3 is supplemented with the following: 14 15 9.29.3(2)F Detector Loop Wire 16 17 Section 9-29.3(2)F is revised to read as follows: 18 19 (******) 20 Detector loop wire for round loops shall use 14 AWG stranded copper 21 conductors, and shall conform to IMSA Specification 51-7, with cross-linked 22 polyethylene (XLPE) insulation encased in a polyethylene outer jacket (PE 23 tube). 24 25 (******) 26 9.29.3(2)J Loop Detector Lead-In Cable (New Section) 27 28 Loop Detector Lead-In Cable (1 pair) 29 30 Two conductor shielded #14 AWG lead-in cable conforming to IMSA 31 Specification #50-2-1984 shall be installed where shown in the wiring schedule 32 in the Plans. Where existing loop lead-in cable is present, the existing cable shall 33 be pulled out and disposed of. The new lead-in cable shall be spliced to the loop 34 wires utilizing Buchanan splice caps and crimper and a scotch cast epoxy 82-35 B1 splice kit or approved equal as detailed in City Standard Drawings 806A, B 36 and C. Where the wiring schedule in the plans calls for more than one loop 37 detector to be spliced into a single lead-in cable, the loops shall be wired in 38 series. The loop detector lead-in cable shall be pulled into the controller cabinet 39 and connected to the detector channel terminals as indicated in the loop detector 40 schedule in the plans. 41 42 Loop Detector Lead-In Cable (2 or 3 pair) 43 44 Two or three pair loop detector lead-in cable shall be installed where shown in 45 the wiring schedule in the plans. Belden 1037A and 1055A cables are a pre-46 approved source. Other cables may be submitted for approval consistent with 47 the following specifications: Multi pair loop detector lead-in cable shall consist of 48 two or three individually twisted and shielded pairs of #16 AWG stranded copper 49 wire, surrounded by an outer jacket of polyvinyl chloride (PVC). Each pair shall 50 also contain a stranded copper drain wire and shall be individually shielded with 51 an aluminum polyester foil shield. 52