[GLLUG] UPS trouble

[Bert W. Carrier Jr.]

This sounds like a problem that might be better solved by adding another 
breaker to your electrical panel and using that circuit as a dedicated 
computer equipment circuit.  Then the AC can trip its own breaker all 
day long without affecting your computers.

Breakers and wire are much cheaper than a UPS, but you do need some 
basic wiring knowledge.  If you're not comfortable working in an 
electrical panel, better call in a pro.

Bert


On 07/23/2012 09:59 AM, Tom Schouten wrote:
> Hi list,
>
> I recently purchased a UPS unit: APC Back-UPS ES BE550G 8-Outlet 550VA 
> 120V
>
> The main use is to bridge circuit breaker triggering since we're close 
> to maximum load on some of the lines in the house with the AC units 
> running.  I.e. I need about 5 minutes to pick up a flashlight and head 
> to the basement.
>
> It seems to work well for my setup when the power cuts out, however 
> when it turns back on there are glitches.  My PC is able to bridge the 
> glitch when I put it to sleep mode, but my IP phone seems to reset or 
> hang and the PC resets when it is running.
>
> The unit supports 350W and the max load I've measured is 200W. The 
> glitches happen even with a load of about 40W = just the PC.
>
> Any ideas what this might be?  Is this a known property of these cheap 
> square-wave approximate sinusoid boxes?
>
> Cheers
> Tom
>
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