[CentOS] wich apc ups?

Tue May 29 19:38:15 UTC 2007
Chris Mason (Lists) <lists at masonc.com>

Thomas Harold wrote:
> Actually, I think there's a technical reason why they don't say 1500W 
> instead of 1500VA.  A
Computers are not a passive load in the way that a heating element would 
be, they tend to have a very capacitive load characteristic. As a 
result, the voltage cycle and current cycle will be out of phase. This 
means that, while the voltage x amperage is equal to approx 1500W, there 
will not be 1500 watts of power delivered.

P=VxA only holds true if they are in phase and so using VA is correct.

-- 
Chris Mason
(264) 497-5670 Fax: (264) 497-8463
Int:  (305) 704-7249 Fax: (815)301-9759 UK 44.207.183.0271
Cell: 264-235-5670
Yahoo IM: netconcepts_anguilla at yahoo.com 


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.