The specs page at Apple says max is 12 Amps @ 120 volts (6 amps @ 240 volts).  
A 600 va can supply a max of 5 amps @ 120volt.  So you would need an inverter 
around 1500va to handle the entire load.

A link to a page that walks you through sizing for a UPS (which is what you are 
looking for I think)
http://www.certiguide.com/apfr/cg_apfr_WhatSizeUPS.htm


Fred Reitberger
[email protected]
352-754-8806



On Mar 12, 2010, at 3:01 PM, maj czep wrote:

> Thanks all,
> 
> The problem is that I am in Nepal, where an amp meter brings about a
> "whaaa?" from most people here, as the only one they have has a little red
> light that indicates whether there is electrical charge or not.
> 
> I work mainly on internet, basic adobe apps like DW IL PS, sometimes FL, and
> some itunes but not nearly the full capacity that my baby is capable of.
> 
> The main problem is that all inverters (600-800va so far) have just crapped
> out and hit overload when the comp is switched off, and the monitor isn't
> even connected.
> I have the following:
> Tata Green 150A battery
> Numeric 600va inverter
> tried--800va inverter for same battery
> 
> I can't really get any decent info from the tech pple here, though I'm
> connecting with the best I have found in 4 mo so far.
> 
> So, if anyone can give me a link to a site or anything that can help with me
> in anyway with all these bizzarities that would be great!
> 
> thx
> 
> On Sat, Mar 13, 2010 at 1:29 AM, Andrew Oliver <[email protected]>wrote:
> 
>> 
>> On Mar 12, 2010, at 10:58 AM, maj czep wrote:
>> 
>>> Hi All,
>>> 
>>> Just wondering how much wattage a mac pro intel xeon 3.0g quad core w
>> nvidia
>>> Geforce processor running 2 500gb HD's, 4gb ram.  Strange that I can't
>> find
>>> out this info on the web, but I have gotten estimates from 350 - 2k,
>> 
>> 
>> 350 watts to 2kW is probably about right. It's probably close to 350W when
>> idle, and will crank up to 2kW when busy.
>> 
>> In other words, power draw on modern systems is very dependent on load.
>> Without knowing what you're doing with the system there is no way to advise
>> what the power draw would be.
>> 
>> As already mentioned, a power meter would be your friend.
>> 
>> Andrew
>> :)
>> 
>> 
> 
> 
> -- 
> Maya Czepulkowska
> http://asurasuria.110mb.com
> [email protected]
> (347) 464-9604
> _______________________________________________
> MacOSX-admin mailing list
> [email protected]
> http://www.omnigroup.com/mailman/listinfo/macosx-admin


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