Compaq AlphaServer GS80 User Manual page 53

Power System Requirements
•
Each system box requires a power subrack.
•
Each power subrack has three power supplies. The third power supply is
always redundant. See Section 3.3.1 for power supply slot assignments.
•
Two AC input boxes are required.
Cables, AC input boxes (including AC circuit breakers), power subracks, and
system boxes are color-coded at cable connections to ensure proper cabling.
Figure 3–3 shows the color coding scheme for a 32-P system.
PCI boxes and storage shelves are installed in the upper half of the power
cabinet.
GS160/320 System Configuration Rules
3-7