Cisco Systems Cisco 12008 manual Power Guidelines, AC-Powered Systems

Site Requirements Guidelines

Power Guidelines

The Cisco 12008 router can be configured with either AC-input or DC-input power supplies.

Note Combining an AC-input power supply with a DC-input power supply in the same router is not allowed.

A minimally configured router has one AC-input power supply or one DC-input power supply. Site requirements for the power supplies differ, depending on the type of source voltage required for the installed power supply(ies).

Observe the following general precautions and recommendations in planning the source power requirements for your router:

•Check the power at your site before router installation (and periodically after installation) to ensure that clean power is being received. Install a line conditioner, if necessary, to ensure proper voltages and power levels in the source voltage for the system.

•Install proper grounding for the site to avoid damage from lightning and power surges.

AC-Powered Systems

In a router to be equipped with AC-input power supplies, observe the following guidelines:

•The power supply must operate with a source voltage ranging from 185 to 264 VAC; the AC-input power supply requires a 20A service minimum for North America and 10A or 16A for the international area.

•Several styles of AC-input power supply power cords are available; make sure that you have the correct style for your site (see Figure 2-5 and Table 2-1).

All AC-input power supply power cords are 14 feet (4.3 m) in length.

•Check the power at your site before installation and periodically thereafter to ensure that you are receiving clean power that is free of noise. Install a line conditioner, if necessary, to ensure proper electrical characteristics of source power.

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