712.46 712.50 NOT USED – CABLE INSTALLATION 712.51 INSTALLATION AND TERMINATION OF CABLES 712.51.01 GENERAL 1. All sizes and wiring arrangements shall comply Sizes & Wiring with the provisions listed below unless otherwise specified on the Arrangements Drawings: a) At intersection traffic signals using a star system of Star System wiring, the posts shall be connected, by a 19 core cable, direct to the controller through the cable draw pits in accordance with the Drawings. b) At intersection traffic signals using a pit system of Pit System wiring, the controller, termination pits and all cable pits adjacent to the traffic signal posts shall be connected by a 29 or 51 multicore ring main circuit as detailed on the Drawings. A 19 core cable shall be used to connect the post to the cable pit. c) At intersections with bad drainage, where the main Post Top Ring road is floodway and where pits hold water for a Main long time, Posts shall be connected to the Assembly controller using Post Top Ring Main assembly and the installation shall be in accordance with the Drawings. d) At all installations, Pedestrian Push Buttons shall be connected to the terminal strip by multicore cable having two core and earth 7/0.50 – 1.5mm². e) For all works, one continuous detector feeder cable for each detector loop shall be drawn through conduits from the loop detector pit near the detector loops to the controller. The use of cable joints or repairs is unacceptable. An approved cable joint is only allowed for loop cables in the loop pit. 2. Interconnecting cables shall be drawn through Cable conduits. It shall be possible to remove and replace any cable Replacement without the need for the disconnection of other cables with the exception of Loop feeder cable. 3. Any cables in which the insulation or sheathing is Damaged damaged before or during installation shall be replaced by the Cable Contractor at his own expense. Powdered soapstone, talc or other approved lubricant may be used as required when pulling the cable into conduits. Particular care must be taken when the outer or inner sheath is being removed and only appropriate stripping tools shall be used at all times. 712.51.02 TERMINATIONS
712.46 – 712.50 NOT USED CABLE INSTALLATION 712.51 INSTALLATION AND TERMINATION OF CABLES 712.51.01 GENERAL 1. All sizes and wiring arrangements shall comply with the provisions listed below unless otherwise specified on the Drawings: Sizes & Wiring Arrangements a) At intersection traffic signals using a star system of wiring, the posts shall be connected, by a 19 core cable, direct to the controller through the cable draw pits in accordance with the Drawings. Star System b) At intersection traffic signals using a pit system of wiring, the controller, termination pits and all cable pits adjacent to the traffic signal posts shall be connected by a 29 or 51 multicore ring main circuit as detailed on the Drawings. A 19 core cable shall be used to connect the post to the cable pit. Pit System c) At intersections with bad drainage, where the main road is floodway and where pits hold water for a long time, Posts shall be connected to the controller using Post Top Ring Main assembly and the installation shall be in accordance with the Drawings. Post Top Ring Main Assembly d) At all installations, Pedestrian Push Buttons shall be connected to the terminal strip by multicore cable having two core and earth 7/0.50 – 1.5mm². e) For all works, one continuous detector feeder cable for each detector loop shall be drawn through conduits from the loop detector pit near the detector loops to the controller. The use of cable joints or repairs is unacceptable. An approved cable joint is only allowed for loop cables in the loop pit. 2. Interconnecting cables shall be drawn through conduits. It shall be possible to remove and replace any cable without the need for the disconnection of other cables with the exception of Loop feeder cable. Cable Replacement 3. Any cables in which the insulation or sheathing is damaged before or during installation shall be replaced by the Contractor at his own expense. Powdered soapstone, talc or other approved lubricant may be used as required when pulling the cable into conduits. Particular care must be taken when the outer or inner sheath is being removed and only appropriate stripping tools shall be used at all times. Damaged Cable 712.51.02 TERMINATIONS
Specification%20712%20Traffic%20Signals%2021%20June%202016.RCN-D16^23383655.DOCX