Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 357
Installation guide
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Appendix A
Power Supply Specifications
Table A-33
Specification
Branch circuit requirement
OL-5781-08
6000 W AC-Input Power Supply Specifications (continued)
6000 W AC-Input and DC-Input Power Supplies
Description
Each power supply input should have its own
dedicated, fused-branch circuit:
For North America—20 A
•
For International—Circuits should be sized
•
according to local and national codes
All Catalyst 6500 series AC-input power
•
supplies require single-phase source AC.
•
All AC power supply inputs are fully isolated.
Source AC can be out of phase between
–
multiple power supplies in the same
chassis, which means that PS1 can be
operating from phase A and PS2 can be
operating from phase B.
For high-line operation, the power supply
–
operates with the hot conductor wired to
a source AC phase and the neutral
conductor wired either to ground or to
another source AC phase as long as the
net input voltage is in the range of 170 to
264 VAC.
Source AC can be out of phase between
–
AC inputs on power supplies that are
equipped with multiple AC inputs, which
means that power cord 1 can be plugged
into phase A and power cord 2 can be
plugged into phase B.
Catalyst 6500 Series Switches Installation Guide
A-49
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