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TCC_2
Level 10
Level 10

Core issue

The AC-input power supplies of all Cisco Catalyst 4500 Series switches require a single-phase source AC. The source AC can be out of a phase between multiple power supplies or multiple AC-power plugs on the same power supply, because all AC power supply inputs are isolated. Each chassis power supply must have a dedicated branch circuit, which is:

  • 15 A or 20 A for North America

  • Circuits sized to local and national codes for international locations

Resolution

In order to support the 4200W AC power supply, the Cisco Catalyst 4500 Series switch requires at least Cisco IOS  Software Release 12.2(25)EWA.

Refer to the Catalyst 4500 Series Power Supplies section of the Catalyst 4500 Series Installation Guide for more information.


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