Cisco 2811 ROUTER 2FE 1NME 4HWIC 2PVDM 2AIM IP BASE WITH A/C POWER SUPPLY Specification Guide
3
Cable Connection Procedures for Cisco 2800 Series Routers
OL-5787-02
Power Connections
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
60 VDC, 20 A. Statement 1005
the protective device is rated not greater than:
60 VDC, 20 A. Statement 1005
Warning
Use copper conductors only. Statement 1025
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. If backup
power is required, see the
A router with a DC-input power supply has a terminal block for the DC power connections. If backup
power is required, see the
.
DC Wiring Requirements
A Cisco 2811, Cisco 2821, or Cisco 2851 router with a DC-input power supply requires copper wire and
crimp-type terminals for the power connections.
crimp-type terminals for the power connections.
summarize 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.
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 1
DC Wiring Requirements for Cisco 2811 Routers
DC Power Input
DC Input Wire Size
Safety Ground
Wire Size
Wire Size
Wire Terminal (Lug)
Overcurrent
Protection
Protection
24–36 VDC, 8 A,
positive or negative,
single source or dual sources
positive or negative,
single source or dual sources
AWG 14 (2.0 mm
2
)
AWG 14 (2.0 mm
2
),
minimum
Amp/Tyco No. 32957 or
equivalent
equivalent
20 A
maximum
maximum
36–60 VDC, 5 A,
positive or negative,
single source or dual sources
positive or negative,
single source or dual sources
Table 2
DC Wiring Requirements for Cisco 2821 and Cisco 2851 Routers
DC Power Input
DC Input Wire Size
Safety Ground
Wire Size
Wire Size
Wire Terminal (Lug)
Overcurrent
Protection
Protection
24–36 VDC, 12 A,
positive or negative,
single source or dual sources
positive or negative,
single source or dual sources
AWG 14 (2.0 mm
2
)
AWG 14 (2.0 mm
2
),
minimum
Amp/Tyco No. 32957
or equivalent
or equivalent
20 A
maximum
maximum
36–60 VDC, 8 A,
positive or negative,
single source or dual sources
positive or negative,
single source or dual sources