Surge / Ground / Lightning
in [Home Built PC]
|
From: Tantalust on 5 May 2008 09:55 "G-squared" <stratus46(a)yahoo.com> wrote in message news:6d536181-80ae-4dc4-966a-f6a371ac2201(a)m73g2000hsh.googlegroups.com... On May 4, 9:24 am, "Tantalust" <Tantal...(a)paradise.net> wrote: > "w_tom" <w_t...(a)usa.net> wrote in message <snip> > > We earth a 'whole house' protector AND connect all protectors short > > (ie 'less than 10 feet') to single point earth ground so that > > protection inside all appliances is not overwhelmed. Simple stuff > > that so confused trader. trader *assumed* MOVs rather than read what > > was posted. trader again demonstrates insufficient technical > > kowledge justifies his mockery and insult. Mythical MOV inside > > appliances demonstrate that trader only reads what he wants to see; > > not what is posted. > > > MOVs inside appliances is another trader myth. Had trader read what > > was posted or learned technology, then trader would not invent > > fictional MOVs inside appliances. > > Why do you have this pompous attitude; constantly sermonizing down to people > as if they're your little, personal kindergarten class? > > You read sometimes like one of those old children's "Golden Books". >Hey, I LIKED reading Golden Books to my kids. They didn't like W-TOMs >posts at all. >GG I loved Golden Books too... I'm 55 going on 90 and I still read mine everyday! ;-)
From: Jitt on 5 May 2008 10:19 In article <74683977-6a03-4695-a5a2- 156ba3653409(a)m45g2000hsb.googlegroups.com>, w_tom1(a)usa.net says... > On May 3, 4:38 am, Franc Zabkar <fzab...(a)iinternode.on.net> wrote: > > Can you elaborate on this by showing us the path taken by the strike > > through the TV? > > Path to earth was through the network and into a third computer. > Through that third computer's motherboard, through modem, and to earth > via phone lines. Semiconductors in these paths were damaged. > > We literally traced this path by replacing ICs. Some ICs (ie > network interface chips) even had cracks on packages where surge > current entered or exiting those ICs. Absolutely no doubt as to how > surge currents found earth ground, destructively, via adjacent > computers. > I wonder why, since electrical codes in North America and Britain require a ground connection at each outlet; computer power cords are 3 wire?
From: Dave on 5 May 2008 10:54 > I wonder why, since electrical codes in North America and Britain require a ground connection at each outlet; computer power cords are 3 wire? (snip) hot neutral ground
From: trader4 on 5 May 2008 12:19 On May 5, 1:44 am, phil-news-nos...(a)ipal.net wrote: > In alt.tv.tech.hdtv bud-- <remove.budn...(a)isp.com> wrote:| phil-news-nos....(a)ipal.net wrote: > > |> In alt.engineering.electrical Leonard Caillouet <nos...(a)noway.com> wrote:|> | <phil-news-nos...(a)ipal.net> wrote in message > > |> |news:fvjhvk016vr(a)news5.newsguy.com... > |> |> In alt.tv.tech.hdtv Franc Zabkar <fzab...(a)iinternode.on.net> wrote: > |> | > |> |> > |> |> The MOVs will act like conductors when they are clamping. The surge will > |> |> take both paths ... the path through the MOVs, and the path going past the > |> |> MOVs. In general, about 50% will go each way. That can vary at higher > |> |> frequencies. > |> | > |> | Why would you assume that 50% will go each way when you don't know the > |> | impedance of each direction? When conducting, or at failure, the MOV has a > |> | very low impedance. > |> > |> There is a distinction between "go each way" and "what comes back" due to > |> the impedance. It will be about 50% that goes each way _because_ the power > |> itself does not (yet) know the impedance (at a distance), until it gets > |> there. > | > | Another installment of Phil's Phantasy Physics using transmission line > | theory. > > Not understanding it is your loss. I have to agree that this is Phantasy Physics. We're supposed to believe that a surge reaching a MOV is going to split 50-50, with half of it going to the MOV path and half moving on down the line, reagrdless of the impedance of the two paths? That would render all surge protection about 50% effective. > > | Two sources directly contradict Phil. > > What sources? Your truncated out of context quotes? > > | Phil has provided no sources to support phantasy physics. > > I don't care. > > -- > |WARNING: Due to extreme spam, I no longer see any articles originating from | > | Google Groups. If you want your postings to be seen by more readers | > | you will need to find a different place to post on Usenet. | > | Phil Howard KA9WGN (email for humans: first name in lower case at ipal.net) |
From: Tzortzakakis Dimitrios on 5 May 2008 12:21
� "Tantalust" <Tantalust(a)paradise.net> ������ ��� ������ news:RPidnaZzhcrV0oXVnZ2dnUVZ_hadnZ2d(a)comcast.com... > "NB" <nobuyout(a)gmail.com> wrote in message > news:b53f2fef-00bd-40d0-9ac1-c69b3bcadf52(a)x41g2000hsb.googlegroups.com... >> Who is W_TOM and why has he appeared in every single thread that has >> contained those keywords since 2001??? > > He an obsessive-compulsive disorder victim, apparently driven by some kind > of bizarre fetish involving ground rods. > > What kind of ground rods? I prefer steel core, copper clad ones:-) I even have the special heavy hammer> -- Tzortzakakis Dimitrios major in electrical engineering mechanized infantry reservist hordad AT otenet DOT gr |