Ac-Powered Systems - Cisco 7609-S Installation Manual

Chapter 2 Preparing for Installation

AC-Powered Systems

OL-5079-04
Basic guidelines include the following:
• Each chassis power supply should have its own dedicated branch circuit.
For North America, the circuit breaker should be rated 20A for the 2500W
•
power supply and 30A for the 4000W power supply. For everywhere else, the
circuit breaker should be sized according to the power supply input rating and
local or national code requirements.
If you are using a 200/240 VAC power source in North America, the circuit
•
must be protected by a dedicated two-pole circuit breaker.
The source AC outlet must be within 6 feet (1.8 meters) of the system and
•
should be easily accessible.
The AC power receptacles used to plug in the chassis must be the grounding
•
type. The grounding conductors that connect to the receptacles should
connect to protective earth ground at the service equipment.
Two types of AC-input power supplies are available:
2500W—Figure 2-1
•
cord plugs that are available for North America or various international
locales. Figure 2-1
other end of the 2500W power supply power cord.
AC-input power cord options and Cisco product numbers.
4000W—Figure 2-2
•
plugs that are available for North America and international locales. Unlike
the other power supplies, the 4000W power supply power cord is hardwired
to the power supply and cannot be removed.
shows the different styles of 2500W AC-input power
also shows the appliance coupler that is attached to the
shows the two different styles of AC-input power cord
Cisco 7609 Internet Router Installation Guide
Power Connection Guidelines
Table 2-5 lists the
2-9