plug in lights
I use 8' flourecents which I wired plug ends on each, and when I built my shop I wired outlets in the ceiling for each to plug into, so each light on my ceiling has a short cord to a plug. This way if a ballast goes I unplug the light take it down and toss it in the garbage, in most cases a complete light is cheaper to buy than a ballast, not to mention easier to change.
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