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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