Telecommunication racks or cabinets, electrical panels, and protected entrance terminals connect to a primary or secondary bonding busbar running above the finished floor. Conductors route upward through a ceiling-mounted cable runway to connect with the telecommunications grounding riser system. A dedicated bonding conductor connects the busbar to available structural building steel. Rack and cabinet bonding requirements reference specific detail callouts on the same drawing sheet.
PBB OR SBB RACK(S) OR CABINET(S) CABLE RUNWAY ELECTRICAL PANEL(S) G PROTECTED ENTRANCE TERMINAL (IF PRESENT) SEE DETAIL [B1] THIS SHEET FOR RACK AND CABINET BONDING REQUIREMENTS FINISHED FLOOR BUILDING STEEL (IF AVAILABLE) SEE TELECOMM GROUNDING RISER
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