Specifications include, but are not limited to: The switchgear shall have a voltage rating of 4.76 kV, with one main circuit breaker and one feeder circuit breaker. Switchgear construction shall be NEMA 3R, non-walk-in outdoor. The switchgear will be used in a 4160V, 3-phase, 60 Hz system. It shall be composed of factory assembled metal clad cubicles ; B. Rated Maximum Voltage 4.76 kV C. Operating Voltage 4160 V D. Main Bus Continuous Rating 2000 A E. Main and ground bus material shall be tin platted copper F. Control bus DC Voltage (Nom.) 48 VDC G. Circuit Breaker Interrupting 40 kA H. Close and Latch 65 kA Peak I. Breaker Interrupting Time 3 cycles J. Temperature rise of the switchgear will be in accordance with the latest revision of ANSI C.37.20 for Metal-Clad switchgear.