There are many jokes about changing a light bulb, and how many people from various professions it might take to change a lightbulb!
The bottom line is that it can be dangerous to change a lightbulb, and one major reason for this is that with some lights you will not be sure whether the electricity is on or off.
If you press a light switch and nothing happens, did the bulb blow just then - in which case the light is now on - or did it actually blow last night - in which case you have just switched it off?
Therefore to be extra safe before changing a lightbulb, follow these two tips:
Change the bulb during day light so that you can clearly see what you are doing
Switch off the lights circuit for your house or that part of your house if you have more than one circuit before changing
That way you know that the light will not be switched on - there is nothing more disconcerting - and also dangerous - than the light coming on in your hands as you plug it in!
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