Cisco Systems 1900 Series manual Connecting to DC Power, DC Input, Overcurrent

Chapter 4 Installing and Connecting the Router

Connecting Power

Warning This product relies on the building’s installation for short-circuit (over current) protection. Ensure that

the protective device is rated not greater than: 15A, 120VAC (10A, 240VAC). Statement 1005

Connecting to DC Power

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

•DC Wiring Requirements for Cisco 1900 Series Routers, page 4-22

•Cisco 1900 Series Router Wiring Procedure for DC Input, page 4-23

Caution DC return is isolated from the frame. (NEBS DC-1)

Warning This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045

Warning This product relies on the building’s installation for short-circuit (over current) protection. Ensure that the protective device is rated not greater than: 60VDC, 20A. Statement 1005

Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Warning Use copper conductors only. Statement 1025

DC Wiring Requirements for Cisco 1900 Series Routers

A Cisco 1921 router with a DC-input power supply requires copper wire and crimp-type terminals for the power connections. Table 4-2summarizes the wiring requirements.

You can connect a single DC power source to either the A input or the B input. If there are dual power sources, connect one source to the A input and one source to the B input; both sources must be the same polarity and voltage.

Table 4-2	DC Wiring Requirements for Cisco 1900 Routers
		DC Input	Safety Ground		Overcurrent
DC Power Input		Wire Size	Wire Size	Wire Terminal (Lug)	Protection
32-60 VDC, 4A,		AWG 14	AWG 14 (2.0	Amp/Tyco No. 32957	20 A maximum
positive or negative,		(2.0 mm2)	mm2),
single source			minimum

	Cisco 1900 Series Hardware Installation
4-22	OL-19084-02