Posted by David G on November 10, 2014 at 20:24:34 from (204.12.184.93):
We had a solenoid fail on the grain dryer tonight. There are no manuals or drawings, but that is not the point of this discussion.
The dryer has 240VAC hooked to the incoming power lugs, but there is only a ground lug. I had assumed that all was 240VAC in it, but there are a lot of 120VAC control components. That means the chassis of the dryer is carrying voltage.
I am thinking about lifting the 120VAC neutral from the chassis and hooking a neutral back to the main disconnect, I have the conductors unused now.
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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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