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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter 5
Installing the Cisco MGX Switch or Gateway
Installing the MGX 8950 Switch
Step 2
Use a Phillips-head screwdriver to remove the two screws that hold the plastic cover over the terminal
block on the DC PEM (see
Figure 5-28
for location).
Figure 5-61
DC PEM
Step 3
Measure enough wire (6 AWG [10 square mm] or larger three-wire solid or stranded copper wire with
insulation rating for 140°F [60°C]) to connect the DC PEM terminal block to the power source.
Note
Cisco recommends using the Panduit LC AS6-10-L.
Step 4
Cut the ends of the wire so that the ends are straight, not slanted.
Step 5
Measure 1/4 inch (6 mm) up from one end of the wire and place a mark at that point.
Step 6
Use a wire stripper to remove 1/4 inch (6 mm) of the covering from the end of the wire. Trim the end of
the covering so that it is straight, not slanted.
Step 7
Attach a ring or space lug on the end of copper wire you prepared in
Step 6
. The stripped part of the wire
must be fully inserted so that no bare wire is exposed.
Step 8
Attach the end of the wire with the ring or space lug to the 48 VDC return, as shown in
Figure 5-62
.
Figure 5-62
Terminal Block on the DC PEM
Step 9
Attach the other end of the wire from
Step 7
to the DC source.
Step 10
Repeat
Step 3
through
Step 7
.
DC
J2 output
connector
-48V DC
-48V DC 50A
-48V
RTN
J2
J1
-48V DC 50A
-48V
RTN
43978
Circuit breaker
J1 output
connector
DC OK
LED
Plastic
cover
Terminal
block 2
Terminal
block 1
48 VDC
return
Safety
ground
– 48 VDC
38228
-48V
RTN