Remove the fluorescent ballast compartment cover to expose the internal wiring and ballast.
Fluorescent light ballast replacement.
Screw in the new ballast replace the metal cover install the fluorescent bulbs and replace the light cover.
T12 fluorescent light ballast replacement.
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.
Replace the ballast when your fluorescent light flickers or makes an annoying hum.
T12 fluorescent light ballast replacement.
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Unplug the fixture or turn off the power at the main panel.
Set your store to see local availability.
Insert the red blue black and white wires in their corresponding holes screw the nut back.
The attachment method.
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Keystone 2 bulb commercial electronic fluorescent light ballast.
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The repair will only take about 10 minutes.
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Then use a nut driver to unscrew the nut holding the ballast in place and install the replacement ballast.
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.
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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.