Cisco 3700 Series Hardware Installation Manual page 60

Power Connections
The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated.
Warning
The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The
ground wire should always be connected first and disconnected last. Statement 239
Do not overtorque the terminal block contact screws. Recommended torque is 8.0 ± 0.5 in-lb
Caution
(0.9 ± 0.05 N-m).
Figure 3-16
A
Negative DC input
Install the plastic cover over the terminals. (See
Step 6
Warning The safety cover is an integral part of the product. Do not operate the unit without the safety cover
installed. Operating the unit without the cover in place will invalidate the safety approvals and pose
a risk of fire and electrical hazards. Statement 117
Step 7 Organize and secure the wires using cable ties as shown in
Turn on power to the DC circuit.
Step 8
Cisco 3700 Series Routers Hardware Installation Guide
3-14
DC Power Connections
-DC, input A
Return, input A
Safety ground
Return, input B
-DC, input B
+ +
B
Terminal
block
+ +
A B
Positive DC input
Figure 3-17.)
Figure 3-17.
Chapter 3 Installing the Router
Return, input A
+DC, input A
Safety ground
+DC, input B
Return, input B
Terminal
block
OL-2180-08