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I. I I I I I I I I I I I I I I I I I I abrasions. The mandrel shall be 1 2 inches in length and the diameter % -inch less than the inside diameter of the duct. 2. Spare ducts shall be plugged and sealed watertight at all pullboxes. 3. Ducts in use shall be sealed watertight at all pullboxes. Sealant shall be foam type. 4. All joints shall be made so as to prevent the passage of concrete inside the conduit to form obstructions or cause cable abrasions. 5. Pullbox covers in all areas shall finish 3-inches above crown of adjacent ground elevation. 6. A 5/8-inch by 1 O-foot copperclad ground rod shall be driven in the bottom of each pullbox. All bond wires and pullbox cover shall be bonded to the ground rod. PART 3 - EXECUTION 3.01 CONDUIT INSTALLATION 07/04 A. Where conduits enter or leave all outlet boxes, cabinets safety switches, tap boxes, motor controllers, etc., other than those having threaded hubs, a standard lock nut shall be used on the outside of the box. Busings 1-inch and larger shall be of an approved insulated type. B. During construction, all installed raceways shall be temporarily plugged or otherwise protected from the entrance of moisture, dirt, trash, plaster, moisture, etc., through neglect of the CONTRACTOR to so protect them, shall be replaced by the CONTRACTOR without additional expense to the Owner. No kinked, clogged or deformed raceways will be permitted on the job. Raceways shall be cut to proper length so that ends will fit accurately in the outlets. Where raceways cross building expansion joints, a suitable raceway expansion fitting shall be used. C. Size of raceway shall not be less than NEC requirements, but in no case shall be less than indicated on the Drawings. Combining of circuits, other than detailed, will not be permitted. The CONTRACTOR shall install larger size raceways than detailed where there is excessive length of unbroken run or excessive number of bends. 160501-9 03-4174