Incandescent bulbs are out - too much juice and not enought light.Fluorescents are good. They have a high light-to-power ratio, and are reliable except in very cold weather. Use the Hight Output 8-foot tubes for a better ratio than the 4 foot. Choose between Cool White and Daylight color. Your choice. If your shop is huge, or you want the lights up real high, you can use high-pressure lights. They have a much higher light-to-watt ratio, but the fixtures are expensive up front. There are 3 kinds. Mercury Vapor is the oldest. Commonly used for street lighting. Has a blue-white light output. However, they are dangerous!! They put out a very hight Ultra-Violet content. This can burn your skin, burn your retinas, and I wouldn't recommend them. Second type is Sodium Vapor. Higher light output ratio than Mercury. Drawback - orange light. Makes all colors look different. The BEST would be Metal Halide. They have the highest light-to-power ratio, and give brilliant white light. But, again, I'd stick to fluorescent unless you're lighting a WalMart or Sam's.
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