Bus Bar Bottom; Block Level Bus Bar - Dell EMC DSS 9000R Manual

Bus bar bottom

The bottom of the rack includes two bus bars, positive and negative. The bus bars are coupled to the middle bus bars for downward
distribution of the system's power.
Figure 39. Bus bar bottom-P (positive, red)
Figure 40. Bus bar bottom-N (negative, black)

Block level bus bar

The following cross bus bar types are specific for the 6GU block.
Installation and Service Manual 61
Bus bar overview