When I want to decide on wire size where voltage drop matters, I simply look
up the resistivity of the wire I am specifically using, calculate the
voltage drop for the length I contemplate using and the current I expect to
draw, and decide if the resulting voltage drop will be acceptable or not.
As someone here said, at low voltage, a relatively small drop in voltage can
be a big deal. And as someone else said, swinging voltages can have an
effect on the linearity ( and thus the sound ) of your signal.
I use pure copper wire (well, its almost entirely pure ) and use the soft,
flexible stranded type, for ease of use. Soldering the connections
(Assuming you solder well) and making a nice neat pigtail seem to work the
best.
Regards, Gary
AA2IZ
----- Original Message -----
From: "Duane - N9DG" <n9dg@yahoo.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, June 06, 2007 8:55 PM
Subject: Re: [TenTec] Gauge of wire from power supply question?
>
> I use the handy-dandy wire-sizing chart in the FAA AC43.13-1B
> (Chapter 11) publication as my guide. If it's good enough for
> airplanes it is good enough for my shack. I do use Chart 11-2
> for *continuous* loads, not the other chart for intermittent
> loads. My thought is that I want to preserve the voltage at
> voice peaks of the PA.
>
> You can download chapter 11, or all of the AC43.13 book from
> here (it's big):
>
>
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/99C827DB9BAAC81B86256B4500596C4E?OpenDocument&Highlight=acceptable%20methods
>
> And if you have airplanes to fix, and you are appropriately
> certificated by the FAA, you can use that document as
> guidance for the work that you do. But if you have the
> appropriate FAA licensure you already know that ;).
>
> BTW there are other sections with other data for materials
> that can be a useful reference from time to time as well.
>
> Duane
> N9DG
>
>
>
>
>
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