well, it does depend on where in Az you are when lightning does strike. with all the overhead power systems in my part of the valley of the sun, incurring damage from a strike has a lot higher probability of happening. In fact, It has happened more than once here. Needless to say, I have spent a lot of money over a long time hardening the electrics in this house. so far, it has worked out ok. just wish the surge suppressors didn't cost so much.
-eric On Jun 2, 2016, at 5:36 PM, Michael wrote: > well, in the current (and possibly last) analysis I blew the ports in the > modem and the hdmi card in the computer in the next room. Now to see if parts > start to fail in a cascade (like what happened when I was in Arizona. I > stioll love gainesville; I just have to unplug all of my electronics when it > starts to lightening. > > On Thu, Jun 2, 2016 at 8:11 PM, Eric Oyen <[email protected]> wrote: > wow, > this almost looks like a ham radio discussion list with this topic (btw, we > hams also have need to protect sensitive gear). I will have to dig up a > publication online. I think the ARRL has it. It details ways to save your > equipment from all these hassles and also reduce noise (some kinds of noise > can adversely affect how computer equipment operates). > > -eric > > On Jun 2, 2016, at 4:25 PM, KevinO wrote: > > > On 06/02/2016 01:52 PM, Mike Bushroe wrote: > >> ... And of course consider lightning rods on the roof and above the tallest > >> things (trees or antennas) on the property. No guarantee that ALL of that > >> would have stopped such a close strike but I think it would have greatly > >> reduced the damage, especially the collateral damage. > >> > >> > > Hello Mike > > > > We took a direct hit to the antenna... Thankfully, the antenna served as a > > lightning rod. > > > > When you have that high of a dI/dt, that close, the magnetic flux is going > > to > > induce currents into every conductive-loop nearby. A voltage surge with a > > field > > intensity of many kV/foot propagates outward from the point of strike and > > across > > the ground. > > > > I had a battery powered toy turn itself on when the strike hit... and so > > did one > > of the neighbors. Both of these were just sitting on tables... not > > electrically > > connected to anything. > > > > While I didn't have a whole-house suppressor, the vast majority of my > > damage was > > from induced currents in ethernet, audio, and video cables strung around the > > house. The induced current in the copper line feeding the swamp cooler gave > > it a > > big enough jolt to destroy the controller I made for it in the attic just > > below. > > (A 1kV 0.1uF ceramic disk cap I had across a 12v rail was blow to little > > burnt > > pieces) > > > > I did have six computers survive and keep running without any damage at > > all. Two > > more froze: one lost an ethernet card and the other a video card. Five of > > the > > 'unscathed" computers were racked up in a common rack with in-rack UPSs and > > surge > > suppressor. > > > > If either of the neighbors had had a whole-house suppressor or inductors on > > their > > mains, it might have helped them. > > -- > > KevinO > > --------------------------------------------------- > > PLUG-discuss mailing list - [email protected] > > To subscribe, unsubscribe, or to change your mail settings: > > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > --------------------------------------------------- > PLUG-discuss mailing list - [email protected] > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > > > -- > :-)~MIKE~(-: > --------------------------------------------------- > PLUG-discuss mailing list - [email protected] > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss
--------------------------------------------------- PLUG-discuss mailing list - [email protected] To subscribe, unsubscribe, or to change your mail settings: http://lists.phxlinux.org/mailman/listinfo/plug-discuss
