Abstract: An electrical power distribution busway and bus plug arrangement useable in an office area. The arrangement includes at least one busway having three power bus bars for carrying electrical power, and isolated ground (or neutral) bus, a neutral bus, and a bonded ground bus. The arrangement also includes a power distribution unit for providing the busway with electrical power, where different qualities of electrical power may be selectively provided to the power bus bars of the busway. The arrangement also includes plug-in assemblies which are electrically engageable with the busways and capable of being configured to selectively provide power from one of the three power bus bars to a sensitive device such as a computer or an insensitive device such as an electrical motor.

Abstract: Power is supplied to a computer facility by a plurality of electrical plug-in busways fed by a power distribution unit. The power distribution unit includes circuit breakers for the busways served. Powered equipment is connected by its own power cable to the busways via a plug-in cable tap box having an approprate receptacle for the particular equipment and also housing a circuit breaker dedicated to that equipment.