all catalyst 4500 series switch ac-input power supplies require single-phase source ac. the source ac can be out of 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 should have its own dedicated branch circuit: 15 a or 20 a for north america and circuits sized to local and national codes for international locations.
for more information about power management and planning, refer to the “environmental monitoring and power management” chapter in the catalyst 4500 series switch cisco ios software configuration guide version appropriate for your software.
a catalyst 4503 with a catalyst 4500 series supervisor engine ii-plus ts and a 1000w power supply will be able to provide 158.4 w of power over ethernet to ports on the supervisor engine. switching modules in other slots will not be able to provide poe.
a catalyst 4503 with a catalyst 4500 series supervisor engine ii-plus ts and a 1400w ac power supply provides 158.4 w of poe to ports on the supervisor engine. switching modules in other slots will not be able to provide poe.
do not mix the 1400 w dc power supply with any other power supply, even for a hot swap or other short-term emergency. doing so can seriously damage your switch.
the 1400w dc input power supply may be used with the catalyst 4500 series ac power shelf. documentation for the catalyst 4500 series ac power shelf is at:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/inst_nts/78_1506 8.htm
the 4200 w ac power supply should not be used in mixed-voltage
configurations. all the inputs in a chassis must be at the same voltage (110 vac or 220 vac).
table a-14 shows the wattage output possible with the 4200w power supply in redundant mode. in redundant mode, both power supplies must have identical inputs and all inputs must be at the same voltage. if the input voltages are mismatched, choose the value matching the weaker of the two power supplies.
table a-15 shows the wattage output possible with the 4200w power supply in conbined mode.
