This installation consisted of a three level underground Visitors Center at the United States Capitol. The complex includes dining and kitchen facilities, a two level visitors auditorium, House and Senate orientation theaters, exhibit gallery, exhibition hall, gift shops, House and Senate meeting rooms, and media and administration offices. All work had to be completed without interruption to the day to day operation of the Capitol. The final power change over to the new distribution system was accomplished on consecutive weekends and required the power to be restored for normal operation at the Capitol on Monday morning. This was accomplished without incident.
The project was awarded a number of WBC Craftsmanship Awards. Two of these awards were for lighting, one for special systems (fire alarm) and a Star Award Nomination for power generation, distribution and switchgear. The power system consisted of three new 15kV 1200 amp medium voltage switchgear connected to nearly twelve miles of 15kV distribution cable. Among the other equipment installed are (12) 12.2kV/480v network transformers, (12) 15kV load break switches, (12) network protectors, multiple 480 volt switchboards, distribution boards, transformers and panel boards. The primary power is backed up with (3) 200 KW 13.2kV emergency generators and paralleling equipment.