OK wire spacing. It looks like we are getting into three kinds of wiring. The first is high voltage power lines that come to your transformers and those mounted on poles are the only ones we are concerned. Most people will not have ladders out close those poles and it will bake a pretty long ladder. Their spacing is dependant on what voltage they are operating at. Typically a nominal 5,000 or the 15,000 level. Somewhere in the two to four foot range is the spacing and yes when they are on a horizontal crossarm eagles have been know to touch two parts. Most home owners should be concerned about the lines coming from the transformer and fastening to the house. In past times there were three single wires fastened to a rack or screw in house knob insulators.. I think the minumum spacing was about 6 to 12 inches and the wires were insulated, but with age it did crack and come off sometimes. Of course the maximum voltage was 250 between the two hot conductors so the netural was usually ran in the middle so the potential to ground was only the 125 so less apt to arc with minor touching. The overhead wiring used nowdays is called triplex. It has two insulated hot conductors wound around a bare aluminum wire that has a steel center that actually does the supporting. The insulation on this stuff is very tuff, pretty thick and long lasting. A causual brush against it is likely safe. However anything that rubs back and forth or is sharp can cut into it. Sometimes the connectors used to couple this wire to the wires going down the conduit to the meter socket were only covered with tape compounds that can deteroite with time and totally fall off. If they connection is made by the utility company they use a insulated connector that is crimpted on and is pretty tough. All the new stuff is pretty safe when done right, but don't put ladders on it or real close. Anyway with the triplex the birds are protected by the insulation. Ron ----- Original Message ----- From: Kevin Doucet To: [email protected] Sent: Wednesday, November 29, 2006 8:13 PM Subject: Re: [BlindHandyMan] Metal Ladders and Electricity Do Not Mix.
Hi, So these wires are actually two wires? How far appart are they? At 12:25 PM 11/28/2006 -0600, you wrote: >Spiro wrote. > > > and how do birds sit on these wires and not get zapped? I've always > > wondered that. > >To get zapped you need to touch both sides of the circuit at the same time. >Usually the earth and a hot wire is enough to give you a good one. Birds >are so small they are only sitting on one wire at a time and they don't feel >a thing. Power line workers use the same principle when they stand in their >insulated bucket trucks and work on the hot wires. > >Regards. > >Max. K 4 O D S. > >Email: <mailto:max%40maxsmusicplace.com>[EMAIL PROTECTED] > >Transistor site ><http://www.funwithtransistors.net>http://www.funwithtransistors.net >Vacuum tube site: <http://www.funwithtubes.net>http://www.funwithtubes.net >Music site: <http://www.maxsmusicplace.com>http://www.maxsmusicplace.com > >To subscribe to the fun with tubes group send an email to, ><mailto:funwithtubes-subscribe%40yahoogroups.com>[EMAIL PROTECTED] > >----- Original Message ----- >From: <<mailto:spiro%40netaxs.com>[EMAIL PROTECTED]> >To: <<mailto:blindhandyman%40yahoogroups.com>[email protected]> >Sent: Tuesday, November 28, 2006 8:04 AM >Subject: Re: [BlindHandyMan] Metal Ladders and Electricity Do Not Mix. > > > maybe this is narrow minded of me. > > But my insurance company actually tells me when my roofing waranty is up. > > Couldn't they at that time, request the customer to show that electrical > > lines "X" feet from the house are insulated? > > Is it really dumb, or out-of-line to run 250 ft of 400V insulated, if that > > many folks are getting zapped? > > (is this a helmet law?) or should we just give a hearty "haha goodbye" to > > folks getting zapped by outdoor wiring? > > and how do birds sit on these wires and not get zapped? I've always > > wondered that. > > > > > > On Mon, 27 Nov 2006, Ray Boyce wrote: > > > >> Hi > >> CPSC warns that consumers can be electrocuted when they use metal ladders > >> near overhead wires. Consumers often use metal ladders near overhead > >> wires > >> to > >> clean gutters, paint structures, trim trees, and repair roofs and > >> chimneys. > >> > >> from electrocution when someone was using a > >> metal ladder which contacted an electrical wire in or around the home. > >> > >> Electrocutions often occur when: > >> > >> Consumers move metal ladders which accidentally touch an overhead > >> electrical > >> wire near the house or street. Metal ladders conduct electricity, which > >> can > >> kill anyone touching the ladder. > >> > >> . Metal ladders shift position. Wind , uneven ground or reaching to the > >> side > >> while on the ladder can cause the ladder or person to contact an overhead > >> wire. > >> > >> . Consumers use metal ladders while handling an improperly grounded power > >> tool or contacting an electrical source, such as a light socket. > >> > >> . Metal stepladders and extension ladders meeting Underwriters > >> Laboratories > >> and American National Standards Institute voluntary standards have labels > >> warning > >> about this hazard. The labels typically state with words and graphic: > >> > >> Metal Ladder Touching Tree and Roof > >> > >> "Danger! Metal conducts electricity! Keep ladder away from power lines > >> and > >> live electrical wires." > >> > >> Despite these and other warnings, electrocutions still occur each year. > >> To > >> avoid this hazard, CPSC advises you to use a ladder, that does not > >> conduct > >> electricity, > >> such as fiberglass or wood, when working near overhead wires. > >> > >> If you must use a metal ladder, follow these precautions: > >> > >> 1. Carefully check the location of all overhead wires before using a > >> ladder, > >> especially where the lines connect to the house. Any powerline (including > >> the > >> line running from the street to your house) can permit electricity to > >> flow > >> into a piece of metal or 3 other object, such as a wet tree branch, that > >> touches > >> it. > >> > >> Powerlines and phone lines often appear similar. Assume all overhead > >> wires > >> carry electricity. Some overhead lines are coated to extend the life of > >> the > >> line. > >> The coating is not intended to protect against electrocution. > >> > >> 2. Lower the ladder when carrying or moving it, to avoid touching an > >> overhead wire. Since long ladders can be unwieldy, have someone help > >> carry > >> and set > >> up the ladder. > >> > >> 3. Never work on a windy day a gust of wind can cause the ladder to shift > >> and touch an overhead wire. > >> > >> 4. Never place a ladder where it could slide into an overhead line. Make > >> sure the distance to the nearest overhead line is at least twice the > >> length > >> of > >> the ladder. > >> > >> 5. Place the ladder's feet on solid, level ground before climbing it. > >> When > >> the ground is not level or is soft, put a flat piece of wood under one or > >> both > >> feet of the ladder to provide a solid, level base. If possible, tieoff > >> the > >> ladder to prevent it from moving. > >> > >> 6. If the ladder should start to fall into an overhead line, let it go. > >> Never try to move it. Do not leave the ladder unattended Have someone > >> call > >> the power > >> company and ask them to cut off electricity to the line, before you move > >> the > >> ladder. If someone is holding the ladder when it contacts the overhead > >> line, > >> never try to pull them away with your hands. Use something that does not > >> conduct electricity, such as a long piece of dry wood or rope, to push or > >> pull > >> them loose. > >> > >> > > > > > > To listen to the show archives go to link > > <http://acbradio.org/handyman.html>http://acbradio.org/handyman.html > > or > > > <ftp://ftp.acbradio.org/acbradio-archives/handyman/>ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > > > The Pod Cast address for the Blind Handy Man Show is. > > > <http://www.acbradio.org/news/xml/podcast.php?pgm=saturday>http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > > > The Pod Cast address for the Cooking In The Dark Show is. > > > <http://www.gcast.com/u/cookingindark/main.xml>http://www.gcast.com/u/cookingindark/main.xml > > > > Visit The New Blind Handy Man Files Page To Review Contributions From > > Various List Members At The Following Address: > > <http://www.jaws-users.com/handyman/>http://www.jaws-users.com/handyman/ > > Visit the new archives page at the following address > > > <http://www.mail-archive.com/[email protected]/>http://www.mail-archive.com/[email protected]/ > > For a complete list of email commands pertaining to the Blind Handy Man > > list just send a blank message to: > > > <mailto:blindhandyman-help%40yahoogroups.com>[EMAIL PROTECTED] > > Yahoo! Groups Links > > > > > > > > > > >No virus found in this incoming message. >Checked by AVG Free Edition. >Version: 7.5.430 / Virus Database: 268.14.19/555 - Release Date: >11/27/2006 6:09 PM Thanks. Kevin Doucet [EMAIL PROTECTED] confuse as says Blind man with unmarked forehead has large belly! [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The New Blind Handy Man Files Page To Review Contributions From Various List Members At The Following Address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/[email protected]/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! 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