On 10/4/2011 11:23 AM, gene heskett wrote: > On Tuesday, October 04, 2011 10:55:18 AM Peter Blodow did opine: > > >> andy pugh schrieb: >> >>> On 4 October 2011 07:31, Peter Blodow<p.blo...@dreki.de> wrote: >>> >>>> I hoped Jim Coleman would be the one looking like an idiot.... but >>>> couldn't someone explain to a poor non-US citizen what kind of >>>> animals RCD and GFCI are? >>>> >>> Does "Fehlerstromschutzschalter" make any more sense? >>> >>> http://de.wikipedia.org/wiki/Fehlerstromschutzschalter >>> >> Thanks, Andy, of course I know these. I have experienced a lot of >> unnecessary trouble caused by this safety switch during my time as a >> facility manager as well as at home (freezer connected to the same line >> as the kitchen appliances, protected by such a goody, us being on >> holidays, and a lightning striking nearby)... >> > > A Hint Peter. I have, scattered about my premises, a dozen or more of > those 3 foot long plugin extension strips with 6 to 8 sockets, a cheap > circuit breaker and surge absorbtion (65+ Joules) built in. 20 years ago I > used to lose a modem every time mother nature put on a show. So I first > went through this room and made sure all the wiring was tight, and properly > phased. Then I bought one super deluxe version of this gizmo, plugged it > into the duplex behind this desk and hung it on the wall about 4 feet from > me. It has connections for cable tv and telephone too, so all circuits are > protected by the devices 5500 Joule surge absorber. Except for the X10 > stuff and the overhead lights, everything else in this room is plugged into > this as a central, common point. If lightning does strike, then the whole > rooms electrical stuff "bounces" in unison. > > Now I do not have cable anymore, so I have only the 8 or 9 channels I can > get from a roof mounted, rotating antenna, which is itself grounded from > its base and all 4 guy wires. There is a telco type lightning arrestor > connected by 2 feet of 8 gage to a ground rod, as is the coax from the > antenna. With lightning arresters on the rotor cable as well as the coax, > I saw evidence of a strike on the antenna the wind took down last June > 24th, but it didn't get past the grounding and the arrestors. > > But its been 15 years since I've had any lightning damages, including > seeing the pole with my transformer on it take a good hit at least once. > > The rest of the house is similarly equipt with these surge arresting > circuit expansion strips too as I've made sure any wiring expansions or > such that I have done are so equipt. > > I sleep better when the weather gets ugly. I seem to have the damages > under control. Extra expense over about 20 years might be $150. > > Cheers, Gene > I was having the same problem years ago - lightning strikes on the power lines taking out equipment. I found a Square D surge suppressor that mounts directly in the power subpanel that powers my computers. It installs just like a circuit breaker. Ever since I did that installation I have had zero failures due to lightning storms. Before the surge suppressor I was losing computers and electronic equipment on a regular basis during lightning storms. I think the suppressor was about $75 on sale.
Dave ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
