Actually, the ups would normally be less expensive that re-wiring, even as a one-off diy project if you don't count the permit, inspection, etc. Sizing your load appropriately is definately a better fix to that.problem, though. If you trip the breaker a lot, reduce the load. <div class="gmail_quote">On Jul 23, 2012 1:26 PM, "Bert W. Carrier Jr." <<a href="mailto:bertcarrier@gmail.com">bertcarrier@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> 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: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> 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 _______________________________________________ linux-user mailing list <a href="mailto:linux-user@egr.msu.edu" target="_blank">linux-user@egr.msu.edu</a> <a href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user" target="_blank">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</a> </blockquote> _______________________________________________ linux-user mailing list <a href="mailto:linux-user@egr.msu.edu" target="_blank">linux-user@egr.msu.edu</a> <a href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user" target="_blank">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</a> </blockquote></div>