Many thanks Duncan, this certainly helps. You have certainly made me think today :)
I have a new battery on its way for this UPS, and I'll keep an eye out for some good deals on more powerful ones. I guess it's time to buy one of the meters that reads power usage so I can gauge accurately how much power each PC is using. I bet my study must be getting close to 1800w when everything is running. It might be time to upgrade to a 20amp circuit in this room or install a second 15amp circuit to run half the room. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of DSinc Sent: Sunday, February 14, 2010 3:34 PM To: [email protected] Subject: Re: [H] Power Issues Gary, Please step back and have a good laugh at yourself. I have done this "surge-only" mistake many times!! LOL! And, even after doing the 1st time, I repeated that same mistake 2 more times.......... :) You are NOT dumb! Yes, I would suspect that the PC along with everything else might cause the ups to trip off. Guess what, I have done this also! LOL! (And, then spent 2 days trying to comprehend why this stupid ups did not work properly!!) ......... :) OK, about the wall socket, I suppose I will defer to the pro electricians of this list. But. All I know is that any given (from the fuse box) 15A circuit allow only 1800W max to be drawn; regardless of what may be on that circuit. The socket is probably not the error. (Well, unless it is being fed from two different circuit branches; and if so this socket has the tabs cut and there are >2 feed lines in the wall box.).....For now, never-mind!! OK? Again, I'll defer to the pros here; I'm still learning by doing/repairing! In any case, all the "stuff" plugged in on any given line all draw power from the same CB/Fuse. I'm told this is 1800W on a 15A circuit. I limit my home 15A circuits to ~1200W max. Just me. Don't think it is a "starve" like condition. But, when you start to get near the max that your 15A circuit can sustain, weird stuff starts to happen. Any sudden spikes (demands) ripple up and down the whole chain. Like the next outlet in the same wall plug. Greg is correct! Laser printer fuser's still have really ugly power demands when they fire up! It is the nature of the beast sadly. And, why I run my simple b/w laser printer direct to the wall! I let it argue for 'trons' with the coffee machine and a pair of RS1500LCD APCs. This branch never draws >9A; even on a bad day. A dead battery in the ups causes the ups to expend lots of energy trying to charge up a battery that, in this case, will never charge. In this scene, the poor ups just does not have any reserve to help feed the PC and the other stuff plugged into it. At least, that is what I have seen through 2 failed battery sessions! Again, I will leave this science to the experts. Just sharing what I've seen here and what I know about home AC business. I do so hope this helps. If not, I have a simple visual of a glass and water to help explain my focus. It is JMHO. Best, Duncan On 02/14/2010 16:04, Hunter, Gary wrote: > Hi Duncan, > > OK Now I really have to admit how dumb I am. Good call the PC was on the > surge protector only side :( > > Problem now is when I put the PC on the UPS side it draws too much > current and trips. > > It is certainly time to buy some bigger UPS's > > In my other email I was talking about the wall socket. I still don't > understand how one socket can starve the other one of power even during > a surge. I would more expect the fuse box to trip. This is on a 15amp > circuit. > > Thanks, > > Gary > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of DSinc > Sent: Sunday, February 14, 2010 1:01 PM > To: [email protected] > Subject: Re: [H] Power Issues > > Gary, > I did understand your plug arrangement. Did not read the printer plugged > > into the ups. Most ups docs say not to do this. > You may have your PC plugged into a "surge-only" outlet on the ups. I > did this twice!! > Think you may have "surge-only" outlets and BBU outlets. > Sorry, did not look at the outputs of the 350G. > Best, > Duncan > > > On 02/14/2010 12:21, Hunter, Gary wrote: >> Why didn't I think of number 1 LOL >> >> I unplug it and the computer switches off. The UPS then beeps to > indicate no power. So I guess the battery in the UPS is enough to keep > it's monitoring up but not the PC. >> >> I am still wondering if the socket is bad though. >> >> -----Original Message----- >> From: [email protected] > [mailto:[email protected]] On Behalf Of Richard Quilhot >> Sent: Sunday, February 14, 2010 10:01 AM >> To: [email protected] >> Subject: Re: [H] Power Issues >> >> 1. Test the ups by unpluging it. If the computer shuts down, the ups > is bad. >> 2. If ups had USB cable running to the PC, you might have auto shut >> down enabled. >> >> >> On 2/14/10, Hunter, Gary<[email protected]> wrote: >>> Hi, >>> >>> I have a color laser printer (Brother HL-4040CDN) and an APC BACK_UPS > ES 350 >>> plugged into the same power outlet. A PC is hung off of the UPS along > with >>> some speakers, a harddrive and two switches. The PC is nothing > special and >>> has 450w PSU in it (can't remember the make but can look it up if > it's >>> important). >>> >>> So the problem is when the printer comes out of sleep mode it > temporarily >>> draws a lot more current and this causes the PC to shut down. I am > assuming >>> I have a problem with the UPS maybe a bad battery, but the UPS is not >>> beeping or indicating it is bad in anyway. Am I correct in thinking > the UPS >>> is bad, or could it be a combination of a bad power outlet and a bad > UPS? I >>> am thinking when there is the increased current draw it delivers all > the >>> power to the top socket and the bottom doesn't get any. >>> >>> Any help would be appreciated. >>> >>> Thanks >>> >>> Gary Hunter >>> Enterpise Architect >>> Travelport GDS >>> T: (+1) 303 - 397 - 5035 >>> M:(+1) 720 - 231 - 0965 >>> E: [email protected] >>> SITA: HDQOK1G >>> Travelport Product Development Center >>> 6901 S Havana St >>> Centennial, CO 80112 >>> >>> >>> If you are not the intended recipient of this e-mail message, please > notify >>> the sender >>> and delete all copies immediately. The sender believes this message > and any >>> attachments >>> were sent free of any virus, worm, Trojan horse, and other forms of >>> malicious code. >>> This message and its attachments could have been infected during >>> transmission. The >>> recipient opens any attachments at the recipient's own risk, and in > so >>> doing, the >>> recipient accepts full responsibility for such actions and agrees to > take >>> protective >>> and remedial action relating to any malicious code. Travelport is not > liable >>> for any >>> loss or damage arising from this message or its attachments. >>> >>> >>> >> > If you are not the intended recipient of this e-mail message, please notify the sender > and delete all copies immediately. The sender believes this message and any attachments > were sent free of any virus, worm, Trojan horse, and other forms of malicious code. > This message and its attachments could have been infected during transmission. The > recipient opens any attachments at the recipient's own risk, and in so doing, the > recipient accepts full responsibility for such actions and agrees to take protective > and remedial action relating to any malicious code. Travelport is not liable for any > loss or damage arising from this message or its attachments. > > > > If you are not the intended recipient of this e-mail message, please notify the sender and delete all copies immediately. The sender believes this message and any attachments were sent free of any virus, worm, Trojan horse, and other forms of malicious code. This message and its attachments could have been infected during transmission. The recipient opens any attachments at the recipient's own risk, and in so doing, the recipient accepts full responsibility for such actions and agrees to take protective and remedial action relating to any malicious code. Travelport is not liable for any loss or damage arising from this message or its attachments.
