7-16
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Connecting Power for DC Systems
Figure 7-12 DC Cabling for Three-Shelf and Four-Shelf Racks
Main cooling
module
Plenum or spacer
Booster cooling unit
AXIS shelf
AXIS shelf
DC source
(primary)
DC source
(optional
secondary)
Power to cooling
module
AXIS shelf
Main cooling
module
Plenum or spacer
Booster cooling unit
AXIS shelf
AXIS shelf
DC source
(primary)
DC source
(optional
secondary)
Power to cooling
module
AXIS shelf
AXIS shelf
P2
P2
P2
P2
P1
P3
2B
2A
P1
3B
3A
P3
2B
2A
P1
3B
3A
P1
1B
1A
P1
1B
1A
P3
P3
4B
4A
P3
2B
2A
H8285
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf
MGX 8220 shelf