If a used light bulb shatters is it an indication of a faulty bulb or a problem with the power supply ?

Answer 1

Bulb is old and therefore becomes brittle. The filament fails and a hot piece drops and short circuits the supply and a minor flash then breaks the glass. A fuse will usually go when this happens.

Answer 2

It sounds liek a faulty bulb.

However, bulbs blowing too frequently are normally a sign of a loose connection somewhere.

Bulbs blow when you turn them on a peak voltage, you cannot determin or control this unless you use a dimmer or similar softstart device.

A loose connection is like turning it off and on many times, so increases the changes of it blowing,as well as being a fire hazard

We had one a few weeks a go where the glass turned in the metal endcap and shorted the element - it blew the whole glass bulb out of the holder. The fireworks were impressive, it was a fountain of pure white cascading over the bed.

If its once in a while, don't worry.

Answer 3

More than likely a faulty bulb. To check this simply put in a new bulb and see if it happens again. If it does you may have a problem, if not, you can be pretty sure it was the bulb

Answer 4

It is the sign of a faulty bulb.

Answer 5

It is probably a faulty bulb - A power surge would probably just fry the filament

Answer 6

It is a faulty bulb dude .

Answer 7

ANF is exactly right.. The filament gradually carbonises and if you switch on at the peak of the cycle--Bang!! Good quality lamps have fuses in the neck to prevent the shattering.

Answer 8

Too many electrons in your power supply. Phone your energy supplier and ask them to turn down the voltage