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How to change a light bulb
Make sure the power is turned off.
This is a good idea any time you are messing around with electrical fixtures. Why not be safe?
Just switch the red power button to " off " in your fuse box.
Be aware this will shut off all of your power, not just for one fixture. You should also unplug the lighting fixture before you change the light bulb (if it's a fixture with a plug, that is).