Cisco AS5300 - Universal Access Server Manuale - Pagina 19
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Note This product is intended for installation in restricted access areas and is approved for
connection using 12 or 14 AWG copper conductors only. The installation must comply with all
applicable codes.
Refer to and follow these steps to wire the terminal block:
Step 1 Note the orientation of the DC power supply. The power supply cord should have three
wires: +48 VDC, -48 VDC, and a safety ground (green wire).
Note For central office installations, it is recommended to use a 6 AWG green ground wire
with one end connected to reliable earth. The other end of the wire should be crimped onto the
double-hole lug provided in the installation pack. The lug should be secured to the mating holes
on either side of the chassis with the two screws included in the accessory pack.
Warning
The illustration shows the DC power supply terminal block. Wire the DC power supply using the
appropriate wire terminations at the wiring end, as illustrated. The proper wiring sequence is
ground to ground, positive to positive, and negative to negative. Note that the ground wire should
always be connected first and disconnected last.
Caution
In a DC power supply installation do not connect the -48 VDC return to chassis ground at the
Cisco AS5300. A single-point ground is recommended at the power distribution rack.
Step 2 Strip off a quarter of an inch (1/4 in. [0.625 cm]) of insulation on the safety ground,
+48 VDC, and -48 VDC input wires.