Wiring Procedure For Dc Input On Cisco 2911, 2921, And 2951 Routers - Cisco WS-C2950-24 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, and tape the
circuit-breaker switch in the OFF position.
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Statement 1003
Use copper conductors only. Statement 1025
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1030
Tip Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
Tip
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
OL-18712-01