[Asterisk-Users] UPS rating for SOHO asterisk box

[TinKoon]

Hi,

Let me try to answer this one.

Assuming your P3-800 is using a 300watt power supply, then in a full 
load condition, convert to VA, it will be 300/0.6=500VA. So, it is 
greater than your small 400VA box. So, you need a bigger ups. Of course, 
if your power usage is actually much lower than 300watt which in most 
cases it is, then your 400va box may be ok, but then you are taking a risk.

Another thing to consider regarding the ups is the runtime, depending on 
the hours and minutes you want the ups to supply power to your asterisk 
box, you may need to add more batteries to the ups.

cheers

Wilson Pickett wrote:

>Slightly OT, but I think this is of possible interest to many of you,
>I need to get a UPS for my asterisk box. They are rated in VA but I
>can't quite figure out how that converts to real life.
>
>I have a PIII-800 box with two X100P and one TDM400P plus graphics
>adapter, an IDE hard drive etc. Will a small 400VA box be enough for
>this?
>
>tia
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