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How to find Watts?

S

Soulbane

Member
I'm confused on how to find out how many Watts my power supply is in my server.

I need to estimate it for the purchase of a UPS that will support this server along with the equipment already there. The Equipment there is rated at 1500 Watts.


I thought watts were found eaily by multiplying volts and amps together .

volts X amps = watts, I thought this was true but when I do it on my server I get 690 watts. (115 x 6).

I can't beleive that this power supply has that much watts. Its a Dell PowerEdge 1300.

Any clue?
 
Getting watts by multiplying volts and amps only applies to DC, it's not that easy with AC. Also, server's wattage will vary a little anyway...
 
yep watts(p) = V * I in a dc circuit

why not just look at the name plate on the psu this will give the watts

but note that the rating of ups sets is in VA ( volt Amps ) and that psu ( switch mode ) only have a pf ( power factor ) of 0.6

thus a 300 watt psu needs a 500 VA ups


 
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