Question : CISCO IP PHONES POWER CONSUMPTION THROUGH CAT5

We're moving all of our voice equipment into a single server rack and want to have it backed up with a rack mountable UPS device. My question is this.....The phones are powered by the CAT5 cables,  and the CAT5 cables powered by a Cisco catalyst 500 switch. To figure power consumption of the phones, is there a formula per phone or do I just use the 90WATT max load that the switch uses?

Answer : CISCO IP PHONES POWER CONSUMPTION THROUGH CAT5

Adding one another useful tool regarding this:

http://www.apexsql.com/sql_tools_diff.aspx