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B. Pull boxes shall be State Standard #5 minimum. Larger sizes shall be installed <br /> where required by the National Electrical Code or Engineer. The bottoms of pull <br /> boxes shall be grouted. - <br /> 2.03 DETECTORS <br /> A. Loop wire shall be Type 1 conform to Section 86-5 of the State Standard <br /> Specifications for Type 1 loops. Detector loops shall be Type 4A per Caltrans <br /> Standard Plans ESd 5A and ES 5B Unless shown otherwise, each loop shall <br /> consist of three turns of loop conductor. Conductor of each loop shall be run _ <br /> continuous, without splice, to the termination pull box where splice to detector <br /> lead-in cable is made. Conductors from loop to termination pull box shall be <br /> twisted together three turns per foot, before inserting in the saw cut slot and <br /> conduit. Each loop shall be installed with the conductor wound in a clockwise <br /> rotation. Each individual conductor shall be banded "Start" and "End" in the <br /> termination pull box. - <br /> B. Each pair of loop conductors shall be identified and banded together in pairs, by <br /> lane, in the termination pull box. A minimum of five feet of loop conductors shall _ <br /> be provided, after splicing, in a termination pull box. All banding shall be of the <br /> permanent, waterproof type. <br /> C. Upon completion of the loop, and prior to connecting the loop to the lead-in _ <br /> cable, each loop shall be megohm tested and tested for continuity in the <br /> presence of the Engineer. The insulation resistance of the loop conductors, lead- _ <br /> in cables, and splices shall not be less than 100 megohms. <br /> D. Final loop connections shall be made such that each loop section is wound in the <br /> opposite rotation to an adjacent loop, whether such loop is in the same lane or in <br /> the adjacent lane. <br /> E. The loops shall be joined in combination of series-parallel so that optimum _ <br /> sensitivity is obtained at the detector sensor unit, and shall be in accordance with <br /> the detector unit manufacturer's recommendation regarding series-parallel <br /> combinations. <br /> F. Final splices between loops and lead-in cable shall not be made until the <br /> operation of the loops under actual traffic conditions is approved by the Engineer. <br /> G. Loop detector lead-in cable shall be Type B. Splices to lead-in cable shall be <br /> soldered, insulated and installed in a heat-shrink tubing, or approved equal. <br /> H. Detector lead in cable shall be run continuous without splice form pull box to <br /> controller. <br /> I. Each loop detector lead-in cable shall be identified and banded in each pull box <br /> and in the controller cabinet. <br /> J. The sealant for filling slots shall be an Elastomeric Sealant, and shall conform to _ <br /> State Standard Specification 86-5.01A(5), 3M detector sealant, black 5000. <br /> Division III-169 NEI Phase II Water and Sewer — <br /> July 2007 CIP Nos.7468, 7589, 7590 <br />