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Connecting Power
This product relies on the building's installation for short-circuit (over current) protection. Ensure that
Warning
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 return is isolated from the frame. (NEBS DC-1)
Caution
This product requires short-circuit (overcurrent) protection, to be provided as part of the building
Warning
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.
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 Power Input
32-60 VDC, 4A,
positive or negative,
single source
Cisco 1900 Series Hardware Installation
4-22
DC Wiring Requirements for Cisco 1900 Series Routers, page 4-22
Cisco 1900 Series Router Wiring Procedure for DC Input, page 4-23
Table 4-2
DC Wiring Requirements for Cisco 1900 Routers
DC Input
Wire Size
AWG 14
(2.0 mm2)
summarizes the wiring requirements.
Safety Ground
Wire Size
Wire Terminal (Lug)
AWG 14 (2.0
Amp/Tyco No. 32957
mm2),
minimum
Chapter 4
Installing and Connecting the Router
Overcurrent
Protection
20 A maximum
OL-19084-02
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