DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Electrical (http://www.diychatroom.com/f18/)
-   -   Light bulbs burning out (http://www.diychatroom.com/f18/light-bulbs-burning-out-40644/)

Michblaze02 03-18-2009 09:12 PM

Light bulbs burning out
 
Again I was over helping a friend with some light fixtures. Their light above the sink says it is rated at 120v 75w. The bulbs they are using are a 65w, yet they are burning out within a week.

Are they maybe a bad batch of bulbs, can't think of anything else since the wattage is lower then the max for the fixture.

NolaTigaBait 03-18-2009 09:17 PM

Quote:

Originally Posted by Michblaze02 (Post 246589)
Again I was over helping a friend with some light fixtures. Their light above the sink says it is rated at 120v 75w. The bulbs they are using are a 65w, yet they are burning out within a week.

Are they maybe a bad batch of bulbs, can't think of anything else since the wattage is lower then the max for the fixture.

more of a voltage thing...get 130 volt bulbs they have sttronger filament...you need to check the voltage...but, if i had to guess you have a bad batch of bulbs

Michblaze02 03-18-2009 09:29 PM

Quote:

Originally Posted by NolaTigaBait (Post 246591)
more of a voltage thing...get 130 volt bulbs they have sttronger filament...you need to check the voltage...but, if i had to guess you have a bad batch of bulbs


It was sitting at 122v consistently. So same wattage bulbs with a higher voltage rating :thumbsup:. Could anything else cause bulbs to blow so quick.

NolaTigaBait 03-18-2009 09:41 PM

Quote:

Originally Posted by Michblaze02 (Post 246601)
It was sitting at 122v consistently. So same wattage bulbs with a higher voltage rating :thumbsup:. Could anything else cause bulbs to blow so quick.

i'd try a different brand of bulb

Michblaze02 03-18-2009 09:46 PM

I will let them know. The white plastic around where the bulb goes in was a bit discolored as well. Signs of it being rather hot, would a higher voltage bulb with lower wattage help with lowering the heat output from the light.

Yoyizit 03-18-2009 10:02 PM

Vibration could shorten lamp life, as could a loose connection.

That is a very short lifetime. 122 volts into a 120v bulb should give you 100[(120/122)^14] = ~80% of rated lifetime and 44% for a 115v bulb.

NolaTigaBait 03-18-2009 10:04 PM

Quote:

Vibration could shorten lamp life
yeah,do you live under an interstate?

vsheetz 03-18-2009 10:22 PM

cheap bulbs
 
One time my wife brought home a quanity of light bulbs that were on sale - cheap. They did not last long at all - seems I spent the next year or two doing nothing but changing light bulbs until I used them all up. :eek:

Yoyizit 03-18-2009 10:31 PM

Quote:

Originally Posted by NolaTigaBait (Post 246618)
yeah,do you live under an interstate?

Or have a honeymoon couple upstairs?

InPhase277 03-19-2009 12:41 AM

If the heat can't escape effectively, lamp life can be reduced substantially. Vibration can also be a problem. Voltage too, of course.

Michblaze02 03-19-2009 05:19 AM

Quote:

Originally Posted by InPhase277 (Post 246666)
If the heat can't escape effectively, lamp life can be reduced substantially. Vibration can also be a problem. Voltage too, of course.


It is definitely getting warm under the glass housing. I guess a lower wattage bulb would help somewhat with that. No vibration though, they live on a quiet dead end road, and ranch style house.

Yoyizit 03-19-2009 11:39 AM

Quote:

Originally Posted by Michblaze02 (Post 246695)
It is definitely getting warm under the glass housing. I guess a lower wattage bulb would help somewhat with that. No vibration though, they live on a quiet dead end road, and ranch style house.

Vibration as in people stomping around upstairs while the light is on, or doors slamming close by while the light is on.

NolaTigaBait 03-19-2009 12:18 PM

Quote:

Originally Posted by Yoyizit (Post 246624)
Or have a honeymoon couple upstairs?

\hahah...nice one:laughing:


All times are GMT -5. The time now is 10:49 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved