I can give 1st hand experience on several levels. T12 is a magnetic ballast, T8 and T5 are electronic ballast lights.
1st.
I changed my T12 lights to T8 lights in my shed. Huge difference in cold weather and improved performance overall.
2nd.
I put 8', T8 strip lights under my tractor shed. Same cold weather performance and improved light quality over T12 overall. 8' fixture uses (4) 4' T8 bulbs.
3rd.
I'm and electrical engineer at our plant. The facilities engineer was wanting to upgrade the HPS lighting currently in place. I had experience at another plant on T5 lights. I helped him find T5 lights to replace the 400W HPS (orange high bay) lights. We went with 4 tube T5 fixtures. Our plant is about 11 acres under roof. There is almost 1200 HPS fixtures. Most have been replaced with T5 fluorescents.
The quality of T8 or T5 lights are indescribable. When I build my shop in the future it will only have T5 fixtures. No comparison. T12 units are years behind in technology and quality.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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