Why do light bulbs blow out if you flip the switch too fast?

Its not that you flip the switch too fast and that contact is made any faster when you do flip it forcefully. The incandescent bulb is made with a fine tungsten filament. The filament has a high positive thermal coefficient of resistance. read more

In recessed or covered lighting, it is possible for too much heat to build up and blow the bulb. This issue is addressed in one of two ways: lower wattage bulbs or larger fixtures. In certain locations, such as beneath play rooms, extreme vibrations affect light bulbs. read more

As a last resort you can also check the tightness of the connections in your switch. As mentioned above, make sure you have turned the power off before you do any maintenance whatever. Read our projects on electrical safety and Part P building Regulations. Be careful out there ! How to Stop LED Bulbs Blowing. Now that more and more bulbs are LED or low energy bulbs, they don’t have a filament to blow as described above. read more