3-18
Cisco 2900 and 3900 Series Hardware Installation
OL-18712-01
Chapter 3 Installing and Connecting the Router
Connecting Power
Connecting Power
This section explains how to connect AC or DC power to Cisco 2900 series routers. It covers the
following topics:
•
Connecting to AC Power, page 3-18
•
Connecting to DC Power, page 3-19
•
Connecting to Backup Power, page 3-30
Warning
Read the installation instructions before connecting the system to the power source.
Statement 1004
Warning
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit.
Statement 1028
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Note
The installation must comply with all required electrical codes applicable at the installation site.
Connecting to AC Power
If your router uses AC power, connect it to a 15 A, 120 VAC (10 A, 240 VAC) circuit with overcurrent
protection. If backup power is required, see the
“Connecting to Backup Power” section on page 3-30
.
Note
The input voltage tolerance limits for AC power are 90 and 264 VAC.
Note
This product requires surge protection to be provided as part of the building installation. To comply with
the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, an external surge
protective device (SPD) is required at the AC power service equipment.
Warning
AC connected units must have a permanent ground connection in addition to the power cable ground
wire. NEBS-compliant grounding satisfies this requirement.
Statement 284
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations.
Statement 1045