Empty conduits with pull wires for phone and Cox pedestals extend to a new telephone main board mounted on a four-foot by eight-foot by three-quarter-inch plywood board per the telephone riser diagram. A number six copper ground conductor runs from the board following the grounding detail, and floor plan notes specify conduit sizes, quantities, and stub-up locations to be coordinated with the architect. A wall-mounted copper bus bar with standoff mounting lugs connects to a building service panel via a number six American Wire Gauge green copper conductor installed in a one-half-inch electrical metallic tubing as designated in the grounding detail. Additional notes require all telecommunications secondary main board locations to have a grounding electrode per National Electrical Code 800-100.
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