[AMRadio] #4 wire from mains? - they gotta be kidding

Larry Will lhwill at verizon.net
Wed May 9 20:09:47 EDT 2007


Well its all about drop and mains "stiffness".

I am sure with your short run,  ampacity is all you have to worry about.

My RCA BTA-1R1 manual calls for #8 for each conductor.  I use #10 and 
my run is comparable to yours.  My TX branch feed is from a submain 
fed with #6.  The #6 run (150 amp mains) is about 60 feet and the #10 
is around 25 feet.



At 08:04 PM 5/9/2007, you wrote:
>Larry, my 2001 reference says 2% for voltage drop.  It also says 
>that #8 in a three wire bundle will handle 40 amps.
>>I forgot to mention.
>>If you size the wire for the current, the 5% rule comes in at about 
>>125 feet IF I remember correctly.
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