On Jun 17, 2005, at 15:34, Jon maddog Hall wrote:
As a co-op student many years ago, I was once nearly electrocuted by
13,600
volts and 800 AMPS.
maddog, I thought those were naturally curly locks!
-Bill
-
Bill McGonigle, Owner Work: 603.448.4440
BFC Computing, LLC
On Jun 17 at 10:54pm, Bill Sconce wrote:
I wouldn't say "constantly surging", though, just "alternating". A "surge"
is an excursion beyond the normal alternating limits.
I used the term "constantly surging" for effect. Those of us who spend most
of our time in the digital world like to thi
Oo. We're going to agree again. And Ben caught me in a mistake.
On Fri, 17 Jun 2005 09:59:30 -0400 (EDT)
Benjamin Scott <[EMAIL PROTECTED]> wrote:
> Remember, we're talking alternating current. In the US, AC
> goes from zero to (IIRC) 180 volts (absolute) twice per cycle,
> or 120 times per
On Jun 17 at 10:47am, Bill McGonigle wrote:
But there are thousands of times more near hits than direct strikes, so
that's what you want to defend against.
Absolutely. Like I said, I put forth the lightening hit case as proof that
you can always find a failure case for any product.
--
Ben
Ben,
Talking about the effects of a lightning strike:
As a co-op student many years ago, I was once nearly electrocuted by 13,600
volts and 800 AMPS. Trust me, it did not take anything near a lightning
strike to turn an electrical engineer into a software person!
md
--
Jon "maddog" Hall
Execut
On Jun 17, 2005, at 09:59, Benjamin Scott wrote:
Now, to me, the big question is, "Just how bad is shunting power to
the grounded (neutral) and/or grounded (safety ground) lines?" It
doesn't matter if you have really great MOVs (or gas tubes for that
matter) if the whole design concept is f
On Jun 15 at 11:39pm, L.B. MCCULLEY wrote:
And the explanation of direct lightening strike consequences was, well,
interesting.
I included that mainly as a sort of anti-FUD technique. (Or is it fighting
FUD with FUD, h?)
Manufacturers of power equipment love to make claims like "our
On Jun 16 at 11:47am, Bill Sconce wrote:
Ben didn't mention that shunt TVSS isn't the only way.
Actually, I did, it was just buried in the paragraph about shunt TVSS. I
don't understand much of the technology involved in series mode protectors, so
all I can do is describe it in very genera
On Wed, 15 Jun 2005 23:18:28 -0400 (EDT)
Benjamin Scott <[EMAIL PROTECTED]> wrote:
>
>This is a surprisingly complicated topic.
And I just agreed with Ben twice, make that three times,
in one message. The Millennium must be near.
Oh, wait... :) :) :)
^ :)
_
An excellent reply, Ben. Everything in it is clear and correct.
Ben didn't mention that shunt TVSS isn't the only way. Series is
another, and can be used in conjunction with bleeding the surge
energy away over a harmless period of time. This essentially requires
storing the surge energy for a l
[EMAIL PROTECTED] said:
>So, is it safe to plug a TVSS into a UPS? The only sure answer I can give
> is "I don't know". Given that it's trivial to get an RPT without TVSS, I
> would say you're safest going that route.
That is what I saidjust use a common extension cord with a couple o
, well, interesting.
This is the sort of post that really makes the list worthwhile!
THANKS again!
-Bruce
Original message
>Date: Wed, 15 Jun 2005 23:18:28 -0400 (EDT)
>From: Benjamin Scott <[EMAIL PROTECTED]>
>Subject: Re: Is it okay to plug a power-strip into a UPS?
This is a surprisingly complicated topic.
Power Taps
--
First, the easy one: The technical term for the "octopus" that Bill Sconce
was describing is "relocatable power tap" or "RPT". This just takes one plug
and turns it into multiple plugs. No protection of any kind is implied
On 6/15/05, Bob Bell <[EMAIL PROTECTED]> wrote:
> On Wed, Jun 15, 2005 at 09:13:02AM -0400, Larry Cook wrote:
...
> >I'd also like to put the router and DSL modem on there. Any reason I
> >shouldn't use a power-strip to add these two devices to the last remaining
> >outlet?
...
> Finally, I'm not
Since surge protectors are usually to protect the device from spikes in the
electrical current, and since the UPS usually does this anyway, why use a
powerstrip that has a surge protector? Just use a non-protected one.
md
--
Jon "maddog" Hall
Executive Director Linux International(R)
e
On Wed, 15 Jun 2005 13:20:53 -0400
Bill McGonigle <[EMAIL PROTECTED]> wrote:
> On Jun 15, 2005, at 12:17, Bill Sconce wrote:
>
> > (I don't use MOVs at all, actually.)
>
> Well don't just leave us in suspense - are you forgoing surge
> suppression or do you have superior technology?
Oh, right
MOV = (Metal Oxide Varistor) A discrete electronic component that
diverts excessive voltage to the ground and/or neutral lines.
http://www.answers.com/topic/varistor
___
gnhlug-discuss mailing list
gnhlug-discuss@mail.gnhlug.org
http://mail.g
Interestingly, all the Leviton whole-house surge arrestors I can find
on their site are MOV-based. (I was considering one after you
mentioned it..seems like a good idea.) Do they have any that are not
MOV-based?
--Drew
On 6/15/05, Brian <[EMAIL PROTECTED]> wrote:
> FWIW, I don't use MOV-based
FWIW, I don't use MOV-based devices as any sort of surge-protector either.
I'm well aware of their limitations.
I've always had Leviton whole-house surge suppressors on my houses. They
install right at the electrical panel and have a far greater chance of being
effective than a power-strip solut
On Jun 15, 2005, at 12:17, Bill Sconce wrote:
(I don't use MOVs at all, actually.)
Well don't just leave us in suspense - are you forgoing surge
suppression or do you have superior technology?
-Bill
-
Bill McGonigle, Owner Work: 603.448.4440
BFC Computing, LLC Hom
l?
>
> > -Original Message-
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of
> > Neil Joseph Schelly
> > Sent: Wednesday, June 15, 2005 9:36 AM
> > To: gnhlug-discuss@mail.gnhlug.org
> > Subject: Re: Is it okay to plu
On Wed, 15 Jun 2005 09:39:15 -0400
"Brian" <[EMAIL PROTECTED]> wrote:
>
> Interesting, I've never heard of that problem before. Most surge protectors
> are really only a couple of MOV's anyway. Do you have a link or something
> handy that has more detail?
There are actually two discussions g
On Wed, Jun 15, 2005 at 09:13:02AM -0400, Larry Cook wrote:
I've got the APC 500 ES (which by the way is on sale at Staple for $15 off
and a $15 rebate for a final cost of $29.99), but it only has three battery
backup outlets. I'm using one for the computer and one for the monitor.
I'd also l
f Of
> Neil Joseph Schelly
> Sent: Wednesday, June 15, 2005 9:36 AM
> To: gnhlug-discuss@mail.gnhlug.org
> Subject: Re: Is it okay to plug a power-strip into a UPS?
>
> It's considered bad practice to do that because surge
> protectors are bad at evenly distributing power t
It's considered bad practice to do that because surge protectors are bad at
evenly distributing power to devices when you mix devices with larger power
draws and smaller ones. Realistically, a modem and router aren't going to
cause any problems like that, so you should be fine.
-N
On Wednesday
Shouldn't be a problem at all, just don't exceed the VA (wattage) rating of
your UPS.
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Larry Cook
> Sent: Wednesday, June 15, 2005 9:13 AM
> To: GNHLUG
> Subject: Is it okay to plug a power-strip into
26 matches
Mail list logo
