1-2.3 Figure 1-3 Main Power Distribution One Line Diagram for Switchgear Building SG1.pdf

This is a technical drawing file—specifically a Main Power Distribution One Line Diagram for Switchgear Building SG1—related to the City of Fort Worth Water Department's RFP for the Rolling Hills Water Treatment Plant SGO Building and Switchgear Replacement project in Texas. The diagram illustrates the electrical distribution system for the switchgear building, showing the interconnection of power systems, transformers, and switching equipment. The drawing includes a note indicating that SG1 is one inch in length on the original drawing and provides specific installation instructions for various electrical components, including the installation of 250-ampere internal transformer fuses, stubbing out cable conduits 10 feet from the switchgear building exterior wall for future substation feed connections, and provisions for eight sets of spare circuits. The diagram designates multiple spare positions at various voltage levels (480V and 14/0C configurations) for future expansion capabilities.

The technical specifications outlined in the diagram indicate that the project involves significant electrical infrastructure work requiring coordination between the distribution system design and future substation connections. The notation referencing 480V electrical one-line drawings suggests this is part of a comprehensive electrical design package for the treatment plant facility. The document serves as a supporting exhibit for engineering firms bidding on the project to understand the scope of switchgear building design and electrical distribution requirements necessary for the facility's operation.