Amendment 1 Attachment 1 - Questions Document.pdf

Amendment 1, Attachment 1 – Questions Document Partial Cabinet Replacement, Bldg 24

1. Vertical Potential Equalization Bus Bar – Could you provide more details on its required specifications and mounting requirements?

a. It is a Grounding Bus Bar in the Back of the equipment cabinet to bond all active and passive components to the Building Ground for potential equalization.

2. Rear Vertical PDU/Accessory Bar – Since this comes built into the cabinet, could you clarify if additional mounting or accessories are required?

a. It varies on the equipment cabinet; contact the vendor if additional mounting or accessories are required.

3. 6AWG Rack Bonding Conductor Kit (including lugs) – Please confirm if there are any specific compliance or installation requirements.

a. United Facilities Criteria (UFC) for grounding, UFC 3-575-01.

4. 6AWG Ground Bonding Conductor Kit (including grounding clamps) – Since this comes built-in, could you confirm if any additional grounding components are needed?

a. Cable and Clamps to connect the Rack grounding bus bar to the Building Grounding bus bar.

5. Miscellaneous Supplies and Hardware – Could you specify any additional materials required beyond those included with the rack cabinets?

a. Cage nuts, Grounding Cable Material to bond the Rack to the Ground bus bar.

6. Closet Connector Housing (CCH) External Relief Kit (1U-3U) – Please provide details on the preferred configuration and any compatibility requirements.

a. One CCH should be provided per equipment cabinet. Closet connector housings

(CCHs) provide interconnect or cross-connect capabilities between outside plant, riser or distribution cables and opto-electronics and housings accept CCH connector panels, CCH cassettes, and CCH modules. The units must be able to be rack mounted in 19-in (48 cm) racks (1.75-in EIA hole spacing). Rack space must be 1U (two panels, cassettes, or modules). Must feature a slide-out tray and see-through, removable and feature a clear door, removable front and rear enclosures and a platinum-colored interior for maximum visibility and access. Must include complete with strain relief. Must also include a removable tinted polycarbonate front door. It must be able to utilize 2 CCH pigtailed splice cassette splice trays. It must meet ANSI/TIA/EIA-568A and 606 standards and tested in accordance with Telecordia GR-63-CORE, UL1863 – Communication Circuit Accessories standard.

b. Two CCH Pigtailed Splice Cassettes should be provided per CCH, for a total of two for each equipment cabinet. Allowing for faster field splicing and easy modular management of connection within the housing, CCH pigtailed spice cassettes must be reloaded and rerouted for quick fusion splicing of either individual or ribbon fiber pigtails, using the same standards mentioned above in the CCH requirement. They must be prepped with a 2 m pigtail and have colored 250 μm for ease of splicing. The CCH Pigtailed Splice Cassette must be 24 F, LC UPC duplex, Single-mode (OS2), single-fiber (250 µm).

7. Could you please confirm if installation services are part of this requirement, or if the government will handle this separately?

a. Installation services are not part of the requirement.