Specifications

5-7
Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter 5 Maintenance
Replacement Procedures
Connecting to Your DC Power Source
If your site has access to a DC power source, you need to provide your own DC power cables. In the
United States you need to use 6 AWG stranded or solid copper wire; elsewhere use 16 mm
2
solid or
10 mm
2
stranded copper wire.
To reconnect the PEM to your DC-input power source, complete the following steps:
Step 1 Locate the DC terminal block located on the dial-shelf PEM front panel and loosen the connector screws
using a 1/4-in. flat-blade screwdriver. (See Figure 5-6.)
Step 2 Strip the DC power cable of its outer insulation to expose about 1/2-in. of copper wire.
Step 3 Connect the power cable stripped wires to the DC terminal block on the PEM and securely tighten the
terminal block connector screws. (See Figure 5-6.)
Figure 5-6 Power Entry Module (PEM) DC Terminal Block
Step 4
Connect the other end of your DC power cables to your DC power source.
Step 5 Repeat Step 1 through Step 4 to connect your DC power cables to the second PEM.
Note If the two DC conductors entering the PEM terminal block are reversed, a yellow warning
LED on the PEM lights to indicate a miswire. No damage will occur; however, you must
power OFF the power at the source and reverse the connections.
C
N
C
N
O
POWER
MISW
IRE
–4
8
V
–
4
8
V
R
T
N
–48V –48V
RTN
DC terminal block
H11575