Cisco Systems 3700 Series 3-14, + B, 16 DC Power Connections, DC, input A, Return, input A, A +

Chapter 3 Installing the Router

Power Connections

Warning The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated. 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

Caution Do not overtorque the terminal block contact screws. Recommended torque is 8.0 ± 0.5 in-lb (0.9 ± 0.05 N-m).

Figure 3-16 DC Power Connections

	-DC, input A
	Return, input A
	Safety ground
	Return, input B
	-DC, input B
A +	+ B

A + + B

Return, input A +DC, input A Safety ground +DC, input B Return, input B

Terminal block

Negative DC input

Terminal block

Positive DC input

95967

Step 6 Install the plastic cover over the terminals. (See Figure 3-17.)

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 Figure 3-17.

Step 8 Turn on power to the DC circuit.

Cisco 3700 Series Routers Hardware Installation Guide

3-14 OL-2180-08