Frequent burn out of light bulbs
Frequent burn out of light bulbs
(OP)
My friend had a problem that the lighting system of his home always burn out every two months. The lighting system include six light bulbs (I think it is in parallel arrangement) of which two light bulbs always burned out even after replacing a new one. It is the same case when using either energy saving one or typical one. It was informed by him that all power cables and lighting switch had been replaced in the past six years. Also, the lighting fixture had been the second new one. Any expert has the idea on this.






RE: Frequent burn out of light bulbs
Is there a motor (fan) in the circuit also?
RE: Frequent burn out of light bulbs
There are a number of contributors, but incandescent-lamp life varies with the 12th power of terminal-voltage ratio according to www.lumex.com/tech_notes
Actual Life/Rated Life = (Rated Volts/Actual Volts)^13 per http://www.replacementlightbulbs.com/
RE: Frequent burn out of light bulbs
Sorry! for not being more explicit with my previous post. Years ago I became aware of a phenomenon regarding light bulbs burning out sooner than they should. Not being a electrical type, I ask around and was told about “reluctance” or something to do with reluctance when a motor such as a fan is also in the incandescent lighting circuit. Like when you turn on a light in the bathroom and the fan comes on too.
Anyway the cure was to replace the incandescent lamps with fluorescent tubes or place a transformer between the lights and fan motor.
Regardless your in the right place to get your answer, there are many experts who can advise you here.
Best of luck
pennpoint
RE: Frequent burn out of light bulbs
I experienced a high rate of light bulbs burning out when I lived in Bangladesh. I blamed it on cheap bulbs until I decided to mark the base of the bulbs when I replaced them. Turns out that my housekeeper was replacing them with burned out bulbs and selling the old ones on the market. I'd end up buying my old bulbs (or someone else's) at the store to replace them.
RE: Frequent burn out of light bulbs
RE: Frequent burn out of light bulbs
If that is not the problem just plug a 12Ov trans surpressor strip anywhere on the same phase or leg. That will clip any spikes on the line. cheap but effective.
RE: Frequent burn out of light bulbs
RE: Frequent burn out of light bulbs
Also, there may be voltage spikes, voltage surges, voltage swells, etc.
It may pay off to hire an experienced Electrical Contractor to look into the matter.
RE: Frequent burn out of light bulbs
Vibration or shock will also cause a light bulb to fail.
Is there any source of vibration, (Motors or whatever) or shock. (Just tapping on an energized standard 115 volt light bulb will cause it to fail)