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3-13
Cisco 2010 Connected Grid Router Hardware Installation Guide
OL-31454-01
Chapter 3 Installing and Connecting the Router
Power-Supply Modules
Connecting DC Power
Step 5 To connect DC power:
Warning
When installing or replacing the unit, the ground connection must always be made first and
disconnected last.
Statement 1046
a. Connect the Ground wire (the green or green/yellow lead of the cable) into the terminal marked with
the ground symbol. See item 7 in Figure 3-9 on page 3-12
b. Connect the Positive wire into the terminal screw labeled +.
c. Connect the Negative wire into the terminal screw labeled -.
Tip Make sure that you cannot see any wire lead. Only wire with insulation should extend from the
terminal screw.
Note If you have a low-voltage DC power-supply module, connect the wires to the terminals labeled
Lo. See items 5 and 6 in Figure 3-9 on page 3-12
If you have a high-voltage DC power-supply module, connect the wires to the terminals
labeled Hi. See items 3 and 4 in Figure 3-9 on page 3-12
Caution Do not use a power cable to connect the chassis low-voltage DC input to a voltage source. If you
inadvertently plug a cable into a 120 VAC source, the low-voltage supply will be damaged and hazard
could result.
If you need a cable to connect to the low-voltage DC power supply, cut off the plug from the power cord
and hard-wire the Cisco CGR 2010 low-voltage DC input directly to its power source, observing the
correct polarity markings.
d. Use a tie wrap to secure the cable to the central strain relief tab next to the terminal block on the
chassis. Secure the cable immediately adjacent to the terminal block to minimize strain on the cable.
The strain relief mechanism consists of three metal loops built into the chassis next to the terminal
block. See Figure 3-11
Note Take care not to over-tighten the tie wrap to the loops, which could damage the wiring insulation. An
over-tightened tie wrap could cause cold-flow of the wire insulation, which in turn could cause shorting
of the power source to the chassis.