Connecting Routers To A Dc-Input Power Supply; Dc Wiring Requirements - Cisco 2612 Hardware Installation Manual

Power Connections
AC connected units must have a permanent ground connection in addition to the power cable ground
Warning
wire. NEBS-compliant grounding satisfies this requirement. Statement 284
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
15A, 120VAC (10A, 240VAC). Statement 1005

Connecting Routers to a DC-Input Power Supply

If your router has a DC-input power supply, follow the directions in this section for proper wiring.
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
15A, 60VDC. Statement 1005
Use copper conductors only. Statement 1025
Warning

DC Wiring Requirements

Table 3-1
supply.
For installations compliant with the National Electric Code, AWG 14 (2.0 mm
Note
input and safety ground wire.
Table 3-1 DC Wiring Requirements for Cisco 2600 Series Routers
Router DC Input
Cisco 2600 with –48 to –60 VDC, 4 A
1-RU chassis height
Cisco 2691 24 - 36 V, 8 A,
positive or negative,
single or dual sources
36 - 60 V, 4 A,
positive or negative,
single or dual sources
1. See the note above this table for National Electric Code wire size requirements.
2. The input voltage tolerance limits for nominal 48-V power supplies are 38 and 72 VDC.
3. The input voltage tolerance limits for nominal 24/48-V power supplies are 18 and 72 VDC.
Cisco 2600 Series Routers Hardware Installation Guide
3-16
summarizes the wiring requirements for Cisco 2600 series routers with a DC-input power
DC Input Wire Size
2
AWG 18 (1.0 mm
AWG 18
2
(1.0 mm
3
AWG 18
2
(1.0 mm
1
Safety Ground Wire Size Overcurrent Protection
2
) AWG 14 (2.0 mm
AWG 14
2
) (2.0 mm )
AWG 14
2
) (2.0 mm ))
Chapter 3 Installing the Router
2
) wire is required for DC
2
) 15 A maximum
15 A maximum
15 A maximum
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