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Cisco7609 Internet Router Installation Guide
OL-5079-04
Chapter2 Preparing for Installation
Power Connection Guidelines
AC-Powered Systems
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 shows the different styles of 2500W AC-input power
cord plugs that are available for North America or various international
locales. Figure 2-1 also shows the appliance coupler that is attached to the
other end of the 2500W power supply power cord. Tabl e 2-5 lists the
AC-input power cord options and Cisco product numbers.
•4000W—Figure 2-2 shows the two different styles of AC-input power cord
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.