Wiring Procedure For Dc Input On Cisco 2911, 2921, And 2951 Routers - Cisco 2900 series Installation Manual

Connecting Power
Table 3-1
DC Power Input
24-36 VDC, 11 A,
positive or negative,
single source or dual
sources
36-60 VDC, 4 A,
positive or negative,
single source or dual
sources
Table 3-2
DC Power Input
24-36 VDC, 17 A,
positive or negative,
single source or dual
sources
36-60 VDC, 7 A,
positive or negative,
single source or dual
sources

Wiring Procedure for DC Input on Cisco 2911, 2921, and 2951 Routers

To connect a router to a DC power source, perform the following steps:
Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the
Step 1
circuit breaker for the DC circuit, switch the circuit breaker to the OFF position.
Follow proper Lockout /Tagout Procedures as defined by your company in accordance with local and
Warning
national laws (e.g. Title 29 CFR Part 1910.147).
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Statement 1003
Warning Use copper conductors only. Statement 1025
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Cisco 2900 and 3900 Series Hardware Installation
3-20
DC Wiring Requirements for Cisco 2911 Routers
DC Input Safety Ground
Wire Size Wire Size
AWG 14 AWG 14 (2.0
2
(2.0 mm ) mm
minimum
DC Wiring Requirements for Cisco 2921 and 2951 Routers
DC Input Safety Ground
Wire Size Wire Size
AWG 14 AWG 14 (2.0
2
(2.0 mm ) mm
minimum
Chapter 3
Wire Terminal
(Lug)
Amp/Tyco
2
), No. 32957
Wire Terminal
(Lug)
Amp/Tyco
2
), No. 32957
Installing and Connecting the Router
Overcurrent
Protection
20 A maximum
Overcurrent
Protection
20 A maximum
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