Programming Documents for Pre-K for SA - The City of San Antonio

8.4.3 Summary
This section includes the Telecommunications Grounding and Bonding component of the
Premise Distribution System for the City Of San Antonio.
Section Includes but is not limited to:
1. Telecommunications Bonding Backbone (TBB)
2. Telecommunications Main Grounding Busbar (TMGB)
3. Telecommunications Grounding Busbar (TGB)
4. Warning Labels
Product Data:
1. Manufacturer's catalog data and applicable special fabrication and installation details.
2. Installation, terminating and splicing procedures.
3. Instructions for handling and storage.
4. Dimensions and weights.
5. Conformance Certificate and Quality Assurance Release: Signed by QAP Manager (Section
01450). Specifically identify products and include purchase order number, supplements, and
item number where applicable. Indicate that requirements are met and identify approved
deviations.
8.4.4 Design Requirements
A. Design grounding system following NEC Article No. 250 – Grounding, IEEE 142-1991-
Recommended Practice for Grounding of Industrial and Commercial Power Systems.
B. Design Standards:
1. Completely protect above-surface structures and equipment.
2. Calculate system on the basis of existing soil resistivity.
3. If cathodic protection for underground sewer pipe is installed (see applicable Division 2
Sections), ensure the pipe is not connected to the general grounding system, either directly
through grounding cable or indirectly through grounded electrical devices connected to the
pipe. Electrically isolate electrical devices from sewer pipe.
8.4.5 Products
8.4.5.1 Communications Grounding Conductors
Insulated copper American Wire Gauge (AWG) wire following ASTM-B3, ASTM-B8 and
ASTM-B33, of following sizes:
40