C-5
Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide
OL-7677-02
Appendix C Connecting to DC Power
Wiring the DC-Input Power Source
Complete these steps:
Step 1 Remove all paint or oxidation from the rack at the point of the grounding connection.
Step 2 Use a 3/16-inch flat-head screwdriver to loosen the grounding screw on the rack.
Step 3 Connect the wire to a ring lug (large enough for the rack screw to fit through).
Step 4 Use a 3/16-inch flat-head screwdriver and the screw to attach the ring lug to the rack.
Step 5 Tighten the grounding screw on the rack over the ring lug.
Repeat these steps for each switch being installed.
Wiring the DC-Input Power Source
Cisco ME-3400-24TS Switches
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
5 A Statement 1005
Cisco ME-3400G-12CS Switches
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
6 A Statement 1005
All Cisco ME-3400 Switches
Warning
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.
Statement 1022
Warning
Only trained and qualified personnel should be allowed to install or replace this equipment.
Statement 1030
Caution You must connect the Cisco ME DC switch only to a DC-input power source that has an input supply
voltage from –36 to –72 VDC. If the supply voltage is not in this range, the switch might not operate
properly or might be damaged.
