Unplug the fixture or turn off the power at the main panel. Remove the diffuser (cover), then carefully remove the fluorescent bulbs or tubes. Remove the fluorescent ballast compartment cover to ...

To comply with new laws on reducing energy usage, fluorescent and HID lighting systems — both examples of arc discharge lamps — have become more complex and varied in their performance. To understand ...

An older area of the plant is now nicknamed “The Twilight Zone” because strange things happen there. Sometimes, lights flicker for several hours and then stop flickering. A fluorescent ballast will ...