Article View: sci.physics.fusion
Article #1266Re: A real wire
From: dave pierson
Date: Fri, 08 Jan 1993 19:44
Date: Fri, 08 Jan 1993 19:44
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In article <9AFE0CEE377FA0C463@vms2.uni-c.dk>, Dieter Britz <BRITZ@kemi.aau.dk> writes... >Originally-From: logajan@ns.network.com (John Logajan): > >>The result is that in the earths atmosphere, a sphere of about 15" in diameter >>is require to hold a voltage potential of 1,000,000 volts without causing >>electrical breakdown in the air due to high near surface gradients, while >>it only requires a wire of about 2" in diameter to transport 1,000,000 volts > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >>along a high tension power grid with causing electrical breakdown of the air. > >Now that is what I call a real wire! Would that be silver, John? >Sorry, I couldn't resist. Older books (1930s) show hollow conductor (drawn interlocking segments) for 100KV and up. More currently (8)>>) clusters of two, three, or four smaller (~1") conductors spaced 6-12" are used, with spacer brackets to maintain the interval. They simulate a larger conductor well enough for practical purposes. Aluminum is common. thanks dave pierson |the facts, as accurately as i can manage, Digital Equipment Corporation |the opinions, my own. 40 Old Bolton Rd |I am the NRA. Stow, Mass, USA 01775 pierson@msd26.enet.dec.com "He has read everything, and, to his credit, written nothing." A J Raffles
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arc1-ca.pugleaf.net!sparky!uunet!dtix!darwin.sura.net!haven.umd.edu!decuac!pa.dec.com!oct17.dfe.dec.com!ryn.mro4.dec.com!empror.enet.dec.com!piersonReferences:
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Path: arc1-ca.pugleaf.net!sparky!uunet!dtix!darwin.sura.net!haven.umd.edu!decuac!pa.dec.com!oct17.dfe.dec.com!ryn.mro4.dec.com!empror.enet.dec.com!pierson From: pierson@empror.enet.dec.com (dave pierson) Newsgroups: sci.physics.fusion Subject: Re: A real wire Message-ID: <1993Jan8.194738.25160@ryn.mro4.dec.com> Date: 8 Jan 93 19:44:40 GMT References: <9AFE0CEE377FA0C463@vms2.uni-c.dk> Sender: news@ryn.mro4.dec.com (USENET News System) Organization: Digital Equipment Corporation Lines: 28