Re: Aluminium Wire (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 28 Sep 2007 03:35:01 -0700 (PDT)
From: Yurtle Turtle <yurtle_t@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Aluminium Wire  (fwd)

If you intend to use this in your primary or tank
wiring, aluminum wire can easily be obtained both
insulated and non-insulated, for electrical service
lines (from your pig to your meter). Beware that if
using overhead "aluminum" wire, it usually has a steel
core, which you may not like at Tesla coil
frequencies.

Adam

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> 
> ---------- Forwarded message ----------
> Date: Fri, 28 Sep 2007 02:17:03 +0000
> From: David Rieben <drieben@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Cc: drieben@xxxxxxxxxxx
> Subject: Re: Aluminium Wire  (fwd)
> 
> Hi all,
> 
> Electric utility companies use plenty of relatively
> large
> cross sectioned, uninsulated aluminum cable for
> transmis-
> sion of electric power ;^) As Bert stated, aluminum
> has a significantly lower conductivity than copper
> but
> its lower cost coupled with its relatively low
> specific 
> gravity or density ( Al = 2.7, Cu = 8.96 ) still
> renders it
> the practical choice for power line conductors. Even
> with only 62% of the relative conductance of cop-
> per, aluminum still ends up with a conductance vs.
> density ratio of over twice that of copper and as 
> previously stated, aluminum is still considerably 
> cheaper than copper. However, as Bert also stated,
> you would likely be hard-pressed to locate a small
> quantity of relatively small guaged enameled
> aluminum
> wire as the superior conductance of copper is pre-
> ferred for smaller transformers and motors where
> weight and cost is not as much of an issue. 
> 
> 
> David Rieben
> 
> -------------- Original message -------------- 
> From: "Tesla list" <tesla@xxxxxxxxxx> 
> 
> > 
> > ---------- Forwarded message ---------- 
> > Date: Thu, 27 Sep 2007 14:22:15 -0500 
> > From: Bert Hickman 
> > To: Tesla list 
> > Subject: Re: Aluminium Wire (fwd) 
> > 
> > Tesla list wrote: 
> > > ---------- Forwarded message ---------- 
> > > Date: Thu, 27 Sep 2007 10:48:54 +0100 
> > > From: Chris Swinson 
> > > To: Tesla list 
> > > Subject: Aluminium Wire 
> > > 
> > > Hi all, 
> > > 
> > > Does anyone know if you can buy Aluminium Wire ?
> Pondering doing some 
> > > testing over copper vs Aluminium Wire with a
> very small coil, though looks a 
> > > pretty are kind of thing :-( 
> > > 
> > > Chris 
> > > 
> > > 
> > > 
> > > 
> > 
> > Chris, 
> > 
> > You can indeed buy aluminum magnet wire. However,
> its seldom found in 
> > small quantities since its normally only used by
> transformer and ballast 
> > manufacturers, loudspeaker, or disk drive
> manufacturers in order to save 
> > (shave?) costs, reduce weight in aerospace
> applications, or reduce 
> > inertia in moving coil systems. It's used
> extensively in 15-1500 KVA 
> > dry-type transformers, but usually as rectangular
> paper or Nomex 
> > insulated wire. 
> > 
> > Since aluminum wire has less than 62% of the
> electrical conductivity of 
> > copper wire, aluminum wire must either be
> significantly larger (~1.6x 
> > the cross sectional area for the same DC
> resistance), or the maximum 
> > current must be derated by a factor of ~0.62 when
> substituting it for 
> > copper wire. 
> > 
> > If you're willing to spring for a significant
> quantity, most large 
> > magnet wire manufacturers produce it (Superior
> Essex, Rea, Alpha-Core, 
> > etc.). Unless you know someone in an industry that
> uses the stuff, your 
> > chances of finding a small quantity are slim to
> none - even on eBay. 
> > 
> > Bert 
> > -- 
> >
> *************************************************** 
> > We specialize in UNIQUE items! Coins shrunk by
> huge 
> > magnetic fields, Lichtenberg Figures (our
> "Captured 
> > Lightning") and out of print technical Books.
> Visit 
> > Stoneridge Engineering at
> http://www.teslamania.com 
> >
> *************************************************** 
> > 
> > 
> > 
> 
> 
> 



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