Posted by K Effective on April 13, 2018 at 06:03:41 from (162.235.236.141):
In Reply to: shop lights posted by 88-1175 on April 09, 2018 at 18:29:56:
We've been replacing the 200 four-bulb fluorescent tube fixtures at the parochial high school I attended. The device of choice is a retrofit unit- the troffer or metal box stays the same, but all the electrical inside is removed- wiring, ballasts, tombstones, all of it. The replacement LED unit has three strips molded together, and is held in place by two self-drilling screws. It then connects to the 120V hot and neutral, even provides those new orange plastic quick connect wire connectors, so any replacement should literally be plug-and-play. Once proficient, I can retrofit a unit in under ten minutes each. The only ones we replaced the troffer(metal box) were to install battery backup lighting at entry ways- with LED the whole fixture can be run on a battery, just not the retrofit units.
I have four, four-bulb fixtures in my shop area, and plan to retrofit them with this kit, but have yet to complete the school project, much less get to my own projects...
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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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