[HCARC] 12 Volt vs Wire Size Website

[curtiswe at ktc.com]

Hi Gary, when picking a wire size, look at how long it will be. At 20 amps voltage drop will be a consideration. The longer the run, the larger wire you will want. I don't have my reference material here in the office so I can't quote" resistance per foot"  numbers on wire sizes but it is worth investigating.
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-----Original Message-----
From: "Gary and Arlene Johnson" <qltfnish at omniglobal.net>
Sender: hcarc-bounces at mailman.qth.net
Date: Wed, 19 Sep 2012 12:43:58 
To: William Morgan<billmorgan000 at hotmail.com>
Cc: <hcarc at mailman.qth.net>
Subject: Re: [HCARC] 12 Volt vs Wire Size Website

Bill,  They have the fuse blocks in question at Rat Shack, but they for some reason don't have 25 amp (the closest to my radio max amp requirement of 20 amps) and all the fuses say they are for a 32 volt system at XX amps.  I guess I should check to see if one of the smaller 12 volt fuses will make contact in the holder - the 32 volt fuses are longer, but maybe the fuse holder can be made shorter.  I noticed the ends screw in to put the fuse in the holder, so maybe they will screw far enough in to hold the 12 volt fuse.
  ----- Original Message ----- 
  From: William Morgan 
  To: qltfnish at omniglobal.net 
  Sent: Wednesday, September 19, 2012 10:46 AM
  Subject: RE: [HCARC] 12 Volt vs Wire Size Website


  Hi:
   Before giving up on the 6 gauge wire, look into the fuses used by high power audio. They use up to 4 gauge wire, the fuses are blocks that are screwed down and a set screw to hold the wire. Also, they hace 0.5 F(500,000 microF) caps. I have seen these at the audio dept. at Walmart and some auto part houses.
                    Bill KA5ONN
   

  > From: qltfnish at omniglobal.net
  > To: hcarc at mailman.qth.net
  > Date: Wed, 19 Sep 2012 10:26:14 -0500
  > Subject: [HCARC] 12 Volt vs Wire Size Website
  > 
  > http://www.offroaders.com/tech/12-volt-wire-gauge-amps.htm
  > 
  > As many of you know, I have been planning to run my new K3 off of battery power in order to become proficient at it so I can run a "Green Power" station at the next Field Day. I have been looking for fuses and fuse holders in a large enough size to wire the station using 6 gauge wire that I have plenty of. I have not been able to find the fuse holders capable of being wired into a 6 guage wire system. My next thought was - how much overkill am I working with by going to 6 gauge wire?? I found this website that tells me I am overkilling the wire requirement by a lot. This website says I can safely use 10 gauge wire for 20 amps up to a 25 foot run. That solves the problem as long as I am electrically safe, and fuse holders with 10 gauge wire leads are easily found.
  > 
  > Gary J
  > N5"BAA"
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