Sorry for my delayed two cents worth.. but I read the daily digest...
The choice to fuse the power cable should include an evaluation of the power
source...
An infinite current "lead acid battery" type of power source definitely
requires fusing the the power cable at the source.
With a modern regulated and current limited power power supply is is just a
personal choice.
Most well designed power supplies can run all day into a dead short and not
damage the power supply. If the cable is large enough to handle the maximum
power supply current no cable fuse would be required.
On the other hand, power cable fusing may give peace of mind and only cost a
couple of dollars and a small voltage drop across the fuse and fuse holder.
AL, K0VM
Date: Mon, 22 Mar 2010 18:42:50 -0400
From: Tim Ellison<telli...@itsco.com>
To: Mike Penkas<mpen...@comcast.net>, Steven L Hess
<sh...@bak.rr.com>
Cc:"flexradio@flex-radio.biz" <flexradio@flex-radio.biz>
Subject: Re: [Flexradio] Anderson power& flexradio power cord
Message-ID:
<d5aa272b5a4710459bae81fcae3f52ab01e34ffc3...@fivehole.itsco.com>
Content-Type: text/plain; charset="us-ascii"
1.) The radio is fused internally
2.) Adding fusing to the power cable is a personal preference but not required
(I recommend it)
3.) The max wattage of the radio is 25 amps. I have never seen may radio draw more than
about 20 amps key down @ full power. I use no more than a 25 amp fuse for the entire
supply. I use 10 amp fuses on each leg "hot" (+) of the power cable. I have
not blown one yet.
4.) The PA internal fuse is 30 amps
5.) The TRX board internal fuse is 10A
-Tim
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