View Full Version : Why did my lightbulb explode?


Sal22
10-12-2005, 22:40
I came home earlier turned the kitchen light on and it exploded! There was sparks and glass went everywhere and it tripped the fuse. Does this mean i have dodgy electrics? Or a poltergeist?:help:

Jake01
10-12-2005, 22:48
Someone must have injected your bulb with petrol to make it explode into bits.... watch your neighbours. The tungston filament in a bulb comes to an abrupt end after use and fuses so it "blows". As for your electrics.... you may have dud ones or just a surge of electricity.

Sal22
10-12-2005, 22:52
Didn't smell any petrol. I know they usually pop when the go but shattering into bits?:loopy:

Jake01
10-12-2005, 23:06
Gotta admit Sal.... I dont know.... maybe it was one of those one in a thousand.... but if you suffered with your electrics you may need to get them looked at.... you dont want a mishap over xmas cos no one will be called out. :gag:

hagueok
10-12-2005, 23:18
and if you do find sombody who will come out , it will cost a arm and a leg

pete_fcs
11-12-2005, 13:23
it will have been badly made.

if any air gets into the bulb, it will explode because of the vacuum around the filament.

normally atmospheric pressure holds everything together.

we'd all explode ourselves if we went up in space without a space suit, and our stomachs would forever hurtle around the sun.

hope this helps

:thumbsup:

Mathom
11-12-2005, 13:28
It's nowt too worrying then? This has happened in my house twice this year, and it doesn't half scare you. :o

cgksheff
11-12-2005, 14:02
Just as the filament starts to burn out, there is a massive surge of current for a milisecond which trips your fuses.
Ours trip every time a bulb goes. For that reason and others we have now changed over to "long-life" bulbs wherever possible.
Most bulbs should also have a little fuse built in which should also fail. If this is absent or if it does not work, the final burn-out of the filament can get very hot and burst the bulb as in your case.

For this to happen more than once in a year points to more than the occasional "bad one" and suggests a very poor quality manufacturer.
Were they very cheap bulbs?
Are we talking about a normal light socket with a 100w bulb?

Mathom
11-12-2005, 14:08
On which blew was on a dimmer switch fitting, and the other was only an ordinary 40w wall light. You can't fit long-life bulbs into either of these, as theyre not recommended for dimmers and the second one has a tight shade on it. I think they were both 'value' bulbs, so I'm hoping it's just that they were cheap!

chickmonk
11-12-2005, 14:11
Did you put the lightbulb in the microwave?

Sidla
11-12-2005, 15:38
Technically, I think 'implode' would be more scientifically accurate.

chickmonk
11-12-2005, 15:41
Do lightbulbs implode in the microwave?

Sidla
11-12-2005, 15:43
Putting lightbulbs in microwaves is not highly recommended.

chickmonk
11-12-2005, 15:47
Yeah, but could be funny...

Sal22
11-12-2005, 19:26
Thatnks for the advice. It wasn't a very cheap bulb, it was a screw in one on a bar of 4 lights.
A least i know my trip switches work!
I will not be trying any bulbs in the microwave though!

mega_monty
11-12-2005, 19:30
Originally posted by Sal22
Does this mean i have dodgy electrics? Or a poltergeist?:help:

No just been watching too much of Most Haunted :D