Rack Powering Options for High Density

This white paper explains and compares alternatives for providing electrical power to high density racks in data centers and network rooms. It addresses the following topics: quantity of feeds; single-phase vs. three-phase; number and location of circuit breakers; overload; selection of connector types; selection of voltage; and redundancy and loss of redundancy. This white paper identifies and quantifies the need for the rack power system to adapt to changing requirements. It defines guidelines for rack power systems that can reliably deliver power to high density loads while adapting to changing needs.