From: "RobertB." 

In article ,
 Gary Britt  wrote:

> Where's "Fred Sutton" when you need him??
>
> I think I remembered that name correctly.

That's the guy! Now, I remember the name. Boy, did those discussions go on
at length. Ultimately, they simply confused the hell out of me. 


>
> Gary
>
> RobertB. wrote:
> > Any EEs out there or people who know electricity? I have two APC UPS
> > SmartUPs in my office, a smallish 750 VA unit attached to my G4 iMac and
> > a large 1000VA unit attached to my ancient Micron and my new iMac
> > core2duo (Yowza!).
> >
> > Here's the deal. Previously, I used to not turn the Micron on much so I
> > would shut the large SmartUPS off at night (since the computer was only
> > on a couple of days a week at most). However, the new iMac, like all
> > Macs, has an Energy Saver feature, so I simply put it to sleep at night.
> > Easy. When it's on, the usage light on the large SmartUPS doesn't even
> > go on, the machine is energy efficient. (The Micron, which has a couple
> > of externals attached causes it to move up one notch). So there's no
> > real voltage draw. OK. I noticed, twice now, that in the morning when I
> > come into the office, the Voltage Trim light is on, indicating high
> > voltage on the line. However, it only appears on one of the SmartUPS.
> > Both machines are in the same room and, as far as I know, connected to
> > the same circuit. After a while, the Trim light goes out.
> >
> > FYI, about two weeks ago, the same thing happened one night to the 750VA
> > UPS. The Voltage Trim light was on for several hours, then went out. I
> > have no idea why it would affect one UPS and not the other, why it seems
> > to happen on a regular basis, and why it would come and go. The owner of
> > the building (an old tenement) installed a new boiler about six weeks
> > ago and I'm wondering if they did something weird. At one point this
> > summer they were running new cabling up the walls on all the floors, but
> > I have no idea if they ever connected the stuff. I can't figure it out.
> > The voltage trim light just went out about 10 minutes ago. Bizarre.

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