[X4U] Power Protection: UPS for a Dual G5

[Neil]

The specs on the UPS models I linked below are 865watts and 900watts.   A
900watt power supply means that the maximum power the computer can draw is
900 watts and will probably be less most of the time, right?

on 7/7/06 2:20 PM, BSugarberg wrote:

> Hello,
> 
> The rule-of-thumb conversion factor for converting VA to Watts = .6
> (For example, I have a APC UPS, and it says on the box 500 VA/300 Watts).
> Some UPS companies today use a higher conversion factor like .7, but
> .6 is more accurate.
> 
> So, 1500 VA x.6 = 900 Watts.  If your system requires 7.5 Amps/900 Watts,
> you will need a UPS larger than 1500 VA.  If it requires 9 Amps/1140 Watts,
> you will need a much larger UPS.
> 
> Bruce
> ===========
> Neil wrote:
>> OK, everymac.com didn't have the power supply specs for my Mac, so I
>> downloaded a PowerMac user guide from the internet.  It says 7.5amps or
>> 9.5amps.   I think the 9.5 is for the original G5/2x2.  Mine is the 2004
>> revision.  I think it uses the more efficient G5  CPU, so I'm guessing the
>> power supply is only 7.5amps.  That still sounds like a lot though.  At
>> 120volts, that would still be 900watts.  So, I can put my display and
>> external drives on my Belkin 720VA, and get a bigger UPS for my PowerMac.
>> Here are a couple I'm looking at.  Any suggestions?  Thanks.
>> 
>> APC
>> <http://www.buy.com/prod/APC_BR_1500_Power_Supply_BACK_UPS_RS_1500VA_BR1500/
>> q/loc/227/10346095.html>
>> 
>> Tripp Lite 
>> <http://www.buy.com/prod/Tripp_Lite_SmartPro_1500_VA_Rackmount_Tower_Digital
>> _UPS_1500VA_900W_3/q/loc/227/202149107.html>