To safely replace the ballast in your fluorescent light turn off the lamp remove it and check the voltage of the feed wires with a voltmeter.
Fluorescent light ballast replacement.
Remove the fluorescent ballast compartment cover to expose the internal wiring and ballast.
Keystone 2 bulb commercial electronic fluorescent light ballast.
Screw in the new ballast replace the metal cover install the fluorescent bulbs and replace the light cover.
Replace the ballast when your fluorescent light flickers or makes an annoying hum.
Unplug the fixture or turn off the power at the main panel.
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T12 fluorescent light ballast replacement.
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Ballasts are available in a standard light output high light output and a low watt design with input voltages of 120 to 277 or 347.
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Insert the red blue black and white wires in their corresponding holes screw the nut back.
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These ballasts are available in either instant start or programmed start ignition for extended lamp life in frequent switching applications such as those where occupancy sensors or motion detectors are being used.
The repair will only take about 10 minutes.
T12 fluorescent light ballast replacement.
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The attachment method.
Then use a nut driver to unscrew the nut holding the ballast in place and install the replacement ballast.
Turn the power back on and boom you re back in business and you just learned a new skill to boot.