Amend 03 CUB Electrical Upgrade As-Builts.pdf

This document is a comprehensive set of as-built electrical drawings for the CUB (Central Utility Building) Electrical Service Upgrade Project 11-2-80 at Fermi National Accelerator Laboratory. The drawings represent the final constructed state of the electrical system and serve as reference documentation for the facility's electrical infrastructure.

The project encompasses extensive electrical system upgrades including installation of a new 250 kW emergency generator, new distribution panels (DHP-CU-1, DHP-CU-2, DHP-CU-3), lighting panels (LHP-CU-1, LHP-CU-2), power panels (PP-CU-1 through PP-CU-5), step-down transformers (T-CU-1 through T-CU-5), an automatic transfer switch, and associated electrical equipment rated for 480/277V and 4.16KV service. The drawings document power distribution to multiple systems including HVAC chillers, cooling tower fans, pump systems, boilers, compressed air systems, and lighting throughout the facility's ground floor, mezzanine, and roof levels. The electrical scope includes cable routing specifications (IMC/rigid conduit with various wire gauges), equipment locations, circuit schedules, one-line diagrams, motor control centers, lighting fixture layouts, emergency lighting provisions with battery backup units, and grounding systems. All equipment features minimum 65,000 AIC withstand ratings, and the design complies with NEC standards. The drawings are marked "PRELIMINARY - FOR REVIEW ONLY" as of February 28, 2023, and include detailed notes requiring field verification of equipment locations and circuit numbering against actual as-built conditions.