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2. All wiring in panelboards shall be neatly formed, grouped, laced, <br />and identified to provide a neat and orderly appearance. A <br />typewritten directory card identifying all circuits shall be placed in <br />the card holder inside the front cover. <br />2.05 UNDERGROUND SYSTEM <br />A. Materials <br />1 . Ducts shall be polyvinyl chloride (PVC Schedule 80) installed on <br />clean fine sand. No rocks or debris shall be allowed as trench fill. <br />2. Cable racks, supports, pulling -in irons, and hardware shall be <br />galvanized steel manufactured by Cope or approved equal, or <br />provided as required. <br />3. Precast pullboxes shall be heavy duty type, designed for a Class <br />H2O wheel load. Precast pullboxes shall be as manufactured by <br />Brooks Products Co., or approved equal. <br />4. Handhole covers and frames shall be traffic rated, H2O class, <br />provided as required and grounded to the system ground. <br />B. Ducts shall be installed to drain away from panels; ducts between <br />pullboxes shall drain toward the pullbox. Duct slopes shall not be less <br />than 3 inches per 100 feet. <br />C. Duct lines shall be laid in trenches on a clean backfill bedding. <br />D. The minimum cover for duct lines shall be as specified. <br />E. PVC duct terminations at pullboxes shall be with PVC and bells. <br />F. Where bends in ducts are required, long radius elbows, sweeps and <br />offsets shall be used. <br />1 . All ducts shall be rodded and a mandrel drawn through followed by <br />a swab to clean out any obstructions which may cause cable <br />abrasions. The mandrel shall be 12 inches in length and the <br />diameter '/2 -inch less than the inside diameter of the duct. <br />2. Spare ducts shall be plugged and sealed watertight at all <br />pullboxes. <br />05/04 160501 -8 03 -4465 <br />