Posted by CB in central NY on September 24, 2007 at 08:21:19 from (63.162.143.21):
I would like to run an electrical line from one barn to another. The object is to power 3 lightbulbs, 4 outlets, an air pump motor, and a hay elevator motor (of course, not all at the same time). I would like to run a 30 amp line.
The distance between barns is 150 feet. Once there, I plan to branch out from the breaker panel using 12-gauge wire for the lights and outlets.
What gauge cable would I need to cover the 150 feet? I have some leftover 10-gauge copper cable and most calculators give me about a 9 volt voltage drop over that distance. Should I go with something larger like an 8 or a 6?
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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