Cisco Systems AIRCAP3602IAK9 manual DC Wiring Requirements, DC Input DC Input Wire Size

Chapter 3 Installing the Router

Power Connections

Depending on the type of router you are installing, see one of the following procedures:

•Wiring the DC-Input Power Supply in Cisco 3620 and Cisco 3640 Routers, page 3-28

•Wiring the DC-Input Power Supply in Cisco 3631 Routers, page 3-30

•Wiring the DC-Input Power Supply in Cisco 3660 Routers, page 3-32

Wiring the DC-Input Power Supply in Cisco 3620 and Cisco 3640 Routers

If your router has a DC-input power supply, follow the directions in this section for proper wiring.

DC Wiring Requirements

Cisco 3620 and Cisco 3640 routers with a DC-input power supply require copper wire for the power connections.

For Cisco 3640 routers, DC power connections require crimp-type ring terminals or spade terminals with upturned lugs.

Table 3-1 DC Wiring Requirements for Cisco 3620 and Cisco 3640 Routers

DC Power Source	DC Input	DC Input Wire Size	Safety Ground Wire Size	Overcurrent Protection
Nominal 48 VDC	–48 to –60 VDC1, 4 A	AWG 14 (2.0 mm2)	AWG 14 (2.0 mm2)	15 A, maximum

1. The input voltage tolerance limits for nominal 48-V power supplies are 38 and 72 VDC.

Wiring Procedure for Nominal 48 VDC Input

To connect the router to a DC power source, perform this procedure.

Step 1 Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the circuit breaker for the DC circuit, switch the circuit breaker to the OFF position, and tape the circuit-breaker switch in the OFF position.

Tip Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.

Step 2 For Cisco 3620 routers, strip the wires to the appropriate length for the terminal block on the power supply.

For Cisco 3640 routers, crimp appropriate ring terminals or spade terminals to the DC power input wires. Strip the wires to the appropriate length for the terminals used. The following warning applies to Cisco 3640 routers:

Warning When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type terminals with upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. Statement 1002

Step 3 Connect the DC power input wires to the terminal block as shown in Figure 3-43or Figure 3-44.

Cisco 3600 Series Routers Hardware Installation Guide

3-28 OL-2056-05