In my case, it was what I had lying around after a mobile installation. If
you want to keep the voltage loss at 20 amps to >4%, a run of #14 is good
for only 4 feet. For #12, you can run 7 feet, and for #10, 11 feet. For
longer mobile installations, #8 is good for 18' at 4% drop. That would keep
13.5 V at the power supply terminals from dropping below 12.95 V, minus
losses in the connectors at both ends.
Check http://www.aeesolar.com/pdfs/catalog/catalog-wire-loss-chart.pdf
You can also find this in the ARRL Handbook.
Ron N6IE
www.N6IE.com
----- Original Message -----
From: "Paul Gates, KD3JF" <pearly732003@yahoo.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, June 06, 2007 5:48 PM
Subject: [TenTec] (no subject)
It might be that we are becoming obsessed with the size of wire we should
use between the power supply and radio. I have two 25 ft rolls of the red
and black #12 wire that I purchased from "The Wireman" several Dayton's
ago and it works fine for my 100 watt radios. Why are we thinking about
going to #10 wire when IMO it is not necessary? Teach me!
Paul, KD3JF
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