Serious Daisy Chain Question (Kill-A-Watt + UPS)

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Bennie_99

Bennie_99

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Jul 16, 2017
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Hey guys,

My power keeps going out during any thunderstorm, and twice my computer shutdown from it. I live in an older house, so the electric isn't as stable as newer homes; built in 1940. I have the Kill A Watt surge protector ( Here ) and it works very good, but I was wanting to buy this Ups to prevent my computer from getting hit by the power outages. ( https://www.newegg.com/Product/Product.aspx?item=N82E16842102048 )

Would it be safe for me to plug my computer and monitor into the Ups and then the Ups into the surge protector? I would like to see what i'm pulling at all times from this outlet. There is another computer plugged into the power strip, but it isn't usually on (I never have both computers on at the same time.) My computer's PSU is 750w, while my monitor pulls around 30w - 40w. Would I need a 1500 vA, or would 1000 vA or less better suit me? I would like the Ups to enable me enough time to power off my desktop, so atleast 1-2 mins of battery backup. Thanks!
 
Solution
ko888
Is your 750W PSU able to run on a Simulated Sine Wave that the CP1500AVRLCD outputs when running in battery backup mode?

If it can't then you'll need the CP1500PFCLCD model that outputs a Pure Sine Wave when running in battery backup mode.
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Karadjgne

Karadjgne

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Dec 26, 2012
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Perfectly fine. I'm running an OC i7, OC gtx970 on a 12 year old Minuteman Pro 700, change the battery every couple of years, it uses a 1200mA/h battery.
While the size of the psu is applicable, it'll only use what it needs, which could easily be 300-400w at best, so even a smaller 1k will give plenty of protection to last several minutes. As far as plugging in daisy chained, that's fine too, you won't cancel out any layers of protection, the ups has its own, the power strip will be somewhat similar. The power strip is built to handle upto its limits, at least 15A continuous draw, far beyond the 6A or so that the pc could possibly use total.
 
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ko888

ko888

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Feb 18, 2009
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Is your 750W PSU able to run on a Simulated Sine Wave that the CP1500AVRLCD outputs when running in battery backup mode?

If it can't then you'll need the CP1500PFCLCD model that outputs a Pure Sine Wave when running in battery backup mode.
 
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Solution
Bennie_99

Bennie_99

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Jul 16, 2017
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I read that if your PSU doesn't have a voltage selector on it's backside, it's a PFC, is this true? If so, that's what I have, so a PFC battery would be my answer then?
 
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ko888

ko888

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Feb 18, 2009
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The lack of an AC input voltage selector switch on the PSU usually indicates that the PSU uses APFC (i.e. Active Power Factor Correction).

There is no guarantee that a PSU with APFC will operate properly with a UPS that outputs a Simulated Sine Wave. When an incompatibility exists the UPS will fail to properly switch over to battery backup mode during a power interruption event essentially rendering the UPS as useless. In some cases the UPS will report an overload condition and shut itself down.

Using a pure sine wave UPS guarantees full compatibility with any PSU. Even the PSU manufacturers recommend that consumers use a pure sine wave UPS because they can't guarantee compatibility with a Simulated Sine Wave and they don't want to deal with the customer support issues that go along with it.
 
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