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#51 | |
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Junior Member
Join Date: Mar 2011
Posts: 7
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Quote:
Irrelevant whether safety ground and neutral meet. Three AC wires enter from the street. Any or all carry surges. The neutral is (should be) earthed. But another two connect lightning strikes from down the street directly into household appliances. Those wires also must be earthed. Otherwise a house has no effective protection. Even power strip protectors would be at risk. Makes no differenece whether a house is 1930 wires or 2010 wires. Proteciton is about energy entering the building. Not about wires inside. A 'whole house' protector must be sized large enough to connect even direct lightning strikes (or other equivalent surges) to earth without damage. Lightning is typically 20,000 amps. A minimally sized 'whole house' protector selling for $50 in Lowes is 50,000 amps. 20,000 amps also says why a bare solid copper, quarter inch wire from the breaker box to ground rods must not go up over the foundation and down to earth. Too long. Too close to other non-grounding wires. Too many sharp bends. Best to go through the foundation and down to earth. Shorter, no sharp bends, etc. Additional requirements for surge protection not required by safety codes. Protection is performed at a service entrance; no interior wire changes necessary. That means earthing must both meet and exceed post 1990 code requirements. Incoming telephone lines already have a 'whole house' protector installed for free. But again, it also must connect short (ie 'less than 10 feet') to those same earthing electrodes. Important is for every incoming wire (including underground wires) to connect short to single point earth ground before entering a buillding. 'Single point' is also important. Connected directly via wire (ie cable TV) or via a protector (AC electic, telephone). Any incoming cable not properly earthed means a surge is inside hunting for earth destructivly via appliances. Protection is always about electrical conductors that would carry destructive energy inside a building. Protection is always about energy dissipated harmlessly outside. No interior wire changes are necessary or relevant. And finally, no protector does protection. How to make any protector better? Expand / enhance the single point earthing. A protector is only as effective as the other item that does protection - single point earth ground. Protection is always about where hundreds of thousands of joules dissipate. |
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#52 | |
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Senior Member
Join Date: Oct 2007
Location: Cleburne, Texas, USA
Posts: 5,640
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Quote:
Looks like Bruce understood. But I do NOT understand anything electrical. But thanks anyway. Bruce I'll see if I can find that cable. Thanks PN!
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#53 | |
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Junior Member
Join Date: Mar 2011
Posts: 7
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Quote:
Surges seek earth ground. Either you all but invite surges to find earth destructively via your appliances. Or earth one 'whole house' protector so that energy is not inside the house. Why is that complex? Either you do nothing. Therefore let energy go hunting destructively inside. Or you earth a 'whole house' protector so that energy never enters. So that energy dissipates harmlessly outside. Only you make that choice. Why is it complex? Because it is a first time you heard it. If like me, then anything this new is never understood until at least a third reread. Only complex if you do not want to know. Or if you let salesman teach you. Protection is always about where energy dissipates. No different than Franklin's lightning rods. A protector (just like a lightning rod) is only as effective as its earth ground. |
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#54 |
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Senior Member
Join Date: Oct 2007
Location: Cleburne, Texas, USA
Posts: 5,640
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You've never met me but know so much about me.
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#55 |
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Senior Member
Join Date: Mar 2006
Location: connecticut
Posts: 8,233
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Mona, I think i'd stick to the advice from the members I know ..... not sure where our resident expert came from, but this is the only place he has posted.
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T7-8 since Feb 2005 |
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#56 |
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Senior Member
Join Date: Jan 2009
Location: Virginia Beach, Va
Posts: 5,555
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he's probably already a member, just posting under a different name, either way, he brough alot of good tips up, it's hard for me to believe buying a house house ground from lowes for 50 bucks, I won't have any more damaged electrical equipment. I will look into though, he does make sense, but i'll keep my ups/surge protectors hooked up for now
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We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker. It is time to restore the American precept that each individual is accountable for his actions. Ronald Reagan |
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#57 | |
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Junior Member
Join Date: Mar 2011
Posts: 7
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Quote:
http://www.erico.com/public/library/fep/technotes/tncr002.pdf Even underground wires must not enter without that short as possible ground connection. How does your telco's computer, connected to overhead wires all over town, operate without damage during every thunderstorm? According to 1950s Bell System Journal papers, a CO suffers about 100 surges with each thunderstorm. Why no damage? Telcos all over the world use protectors that actually do protection. Protectors connected as short as possible to earth. Your telco even installs one for free where their phone wires meet yours. Don’t take my word for it. View it. Power strip protectors create other problems demonstrated by scary pictures: http://www.ddxg.net/old/surge_protectors.htm http://www.zerosurge.com/HTML/movs.html http://tinyurl.com/3x73ol entitled "Surge Protector Fires" http://www3.cw56.com/news/articles/local/BO63312/ http://www.nmsu.edu/~safety/news/lesson-learned/surgeprotectorfire.htm http://www.pennsburgfireco.com/fullstory.php?58339 Included is a fire marshal describing why these fires happen. Another shows all protector parts removed; its light says that protector is still OK. You do not buy ground in Lowes. First, earthing (ie 10 foot earth ground rods) must both meet and exceed 1990 National Electrical code. Second, other wires not connected directly to ground (ie telephone, AC electric) connect via a 'whole house' protector. Buy the protector – not ground. A Cutler-Hammer 'whole house' protector sells for less than $50 in Lowes or Home Depot. That is not protection. That is only a connecting device to what does protection - earth ground. What happens too often when plug-in protectors are not protected by one 'whole house' protector? Norma on 27 Dec 2008 in "The Power Outage" describes the danger: > Today, the cable company came to replace a wire. Well the cable man pulled > a wire and somehow yanked loose their "ground" wire. The granddaughter > on the computer yelled and ran because sparks and smoke were coming from the > power surge strip. Hard facts, numbers, the concepts, and professional citations have far more credibility than any friend. If a power strip protector does protection, then someone can post each number that defines that protection. Good luck. No power strip claims protection from any typically destructive surge. No matter how many close friends recommend it, the spec numbers still do not exist. No numbers because no power strip claims effective protection. Power strips are a perfect example of how advertising so easily manipulates. Most people also believed Saddam had WMDs. Well proven by so many close friends saying it was true. How did that 'truth' work out? Facts and numbers said WMDs did not exist. Which had more credibility? Hearsay from friends? Or facts and numbers? Important and well proven is 100 years of science. How many operators died when lightning killed them through their headsets? Again, 100 years of well proven science. Meanwhile, worry about a protector on a desktop of papers, on the rug, or behind some furniture. Protectors that are grossly undersized can create scary pictures. Another item that is protected only by earthing one 'whole house' protector. A reality not known if your information comes from advertising and spin. Or from close friends. Buy the protector in Lowes. Connect that protector short to single point earth ground. |
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#58 |
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Senior Member
Join Date: Jan 2009
Location: Virginia Beach, Va
Posts: 5,555
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thanks for the links, sure will look into, and i mis=spoke earlier, my friend had to click on a ladder to start hammering the ground rod into the ground, so it was longer than 5 foot
I will take the time to read all the links and stuff and see if i can't improve my house
__________________
We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker. It is time to restore the American precept that each individual is accountable for his actions. Ronald Reagan |
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#59 |
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Moderator
Join Date: Jul 2001
Location: California
Posts: 5,586
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I decided to do a Google search for "whole house surge protectors." I found a whole home search protector on Amazon but they are currently out of stock. The customer reviews were very good.
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Rock bottom is relative to how high you bounce when you hit. --General George Patton Complex problems need to be solved collectively. ––Paul Nussbaum usc87.blogspot.com |
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#60 | |
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Junior Member
Join Date: Mar 2011
Posts: 7
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I know you posted this:
Quote:
Meanwhile, above is irrelevant to your original problem. Much of what you were advised would not solve that problem. From what I read, would only cure symptoms. Did you know your computer has a power controller that decides how, if, and when power can be turned on or off? It even decides when to let a computer's CPU execute. Your symptoms say either that controller is defective. Or is getting an input that tells it to power cycle your machine. Most do not even know that controller exist. For the same reason they would recommend a power strip protectors only because of advertising. I don't just tell someone what to do. To me, that is lying. I also provide the many reasons why. 'Why' is necessary to have honesty. Those who advise without the 'whys', to me, are quickly suspect. Which says you probably don't know me. Or anyone like me. I know an awful lot about this stuff. If you thought my last posts were long, wait till you read the many suggestions for solving that power off problem. If your computer is from a better manufacturer, then it comes with comprehensive hardware diagnostics. On the hard drive. On a provided CD. And on the manufacturer's web site. Diagnostics find a problem long before you open, disconnect, or change anything. Also view system (event) logs. Windows finds problems, records them, then works around them. So that you can address problems at your convenience. Inspect those logs? If any number makes no sense, post it. Numbers that make least sense are often the most important to others who know this stuff. I don't say it could be this or might be that. On CSI, they say, "Follow the evidence." That means getting facts before fixing or changing anything. I believe you posted backwards. Should have posted that you do not know me. A sentence that also explains why you could have expected damage using plug-in protectors. 100 years of well proven science is not what most people are told to believe. Most people also do not understand what is meant by "Follow the evidence". Provided was how to end all that damage. Also provided is where to start to eliminate power cycling (assuming that problem still exists). Last edited by westom; 03-25-2011 at 09:49 PM. |
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