Installation guide

2-42
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 2 Preparing to Install
Making Power and Ground Connections
• IGX 8430
– Single power source for each shelf
– Dual power source for each shelf (a separate branch circuit supplies each source)
Wiring is connected from one or two –48-VDC power sources to one or two DC PEMs per shelf. Cisco
does not provide the wire between the node and the source. Instead, the installer or customer must supply
it. These wires should be capable of carrying 20 A. The diagrams on the pages that follow show DC
wiring for single and redundant DC sources for all IGX models.
• For an IGX 8410 or IGX 8420 node with a single DC power source, see Figure 2-26.
• For an IGX 8410 or IGX 8420 node with redundant DC power sources, see Figure 2-27.
• For an IGX 8430 node with a single DC power source, see Figure 2-28.
• For an IGX 8430 node with redundant DC power sources, see Figure 2-29.
Figure 2-26 Single Shelf with Single DC Source
Figure 2-27 Single Shelf with Dual DC Sources
Return
Safety ground
-48 VDC
Return
Feed A, 25A
-48 VDC
-48 VDC source
PE-BC
H8350
3
2
1
Return
Safety ground
-48 VDC
Return
Safety ground
-48 VDC
Return
Feed A, 25A
-48 VDC
Return
Feed B, 25A
-48 VDC
PE-BC
-48 VDC Source
H8351
3
2
1
3
2
1