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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
g
round
–48 VDC
38228
-48V
RTN