[Asterisk-Users] UPS rating for SOHO asterisk box

[TinKoon]

Normally, the power factor is taken as 0.6, thus to convert watt to va, 
just divid the wattage by 0.6 to get the va rating.

cheer

Wilson Pickett wrote:

>>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
>>    
>>
>
>Thanks for that info. Where does the /0.6 come from? I've always
>wondered about VA which looks like "VoltAmps".
>
>There are 400, 500 and 600VA models. The asterisk box is alone on the
>UPS so I guess a 500 should be the best investment.
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