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Blowing bulbs #4537848
10/09/17 09:42 AM
10/09/17 09:42 AM
Joined: Oct 2005
Posts: 1,679
South Dakota
otis24 Offline OP
otis24  Offline OP
Joined: Oct 2005
Posts: 1,679
South Dakota
We have a light fixture at home that we have replaced. The first one kept blowing bulbs and finally burnt out completely. We replaced it with the same type fixture. It blows bulbs like crazy. We have the proper wattage bulbs in it. What could be the problem?


1991 Chevrolet K1500 (4.3, 4x4, 86k miles)

2016 Dodge Grand Caravan
(3.6 V6) 46500 miles
Re: Blowing bulbs [Re: otis24] #4537886
10/09/17 10:05 AM
10/09/17 10:05 AM
Joined: Mar 2011
Posts: 290
NM, USA
pkunk Offline
pkunk  Offline
Joined: Mar 2011
Posts: 290
NM, USA
I'd start with checking the voltage at the fixture.


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Blowing bulbs [Re: pkunk] #4537894
10/09/17 10:14 AM
10/09/17 10:14 AM
Joined: Jun 2003
Posts: 33,568
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,568
ME
Originally Posted By: pkunk
I'd start with checking the voltage at the fixture.


+2 and the rest of your house. Could have a "loose neutral" (bad).

If you see stuff brighten and dim when you turn on the electric range/ dryer call the power company asap.

Re: Blowing bulbs [Re: pkunk] #4537925
10/09/17 10:40 AM
10/09/17 10:40 AM
Joined: Feb 2010
Posts: 4,838
Central Texas
sleddriver Offline
sleddriver  Offline
Joined: Feb 2010
Posts: 4,838
Central Texas
Originally Posted By: pkunk
I'd start with checking the voltage at the fixture.
+1
I once discovered 20VAC between gnd and the neutral at a neighbors house.

Are these incandescent bulbs? Move the fixture to another outlet & location as a test.


1998 Volvo V70 T5 228,880 mi. Original Owner.
M1 10W-30 HM
"It's never a mistake to buy tools, defined broadly. They're not a cost, they're an investment." - J.B. Peterson
Re: Blowing bulbs [Re: otis24] #4538001
10/09/17 12:00 PM
10/09/17 12:00 PM
Joined: May 2016
Posts: 718
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline
Joined: May 2016
Posts: 718
Canada


If the fixture in enclosed, the lamp may be over heating, some fluorescents bulbs with screw bases don't take
heat well in the 'overhead' position, but do well in table lamp applications.

More rare is a voltage/ wiring problem, check various outlets near the light to see that 115 /120V is between
the flat slots with one slot giving full voltage to the ground socket, the other slot (neutral) should
be 2V or less to the same ground. A selection of sockets in the house should read nearly identical
if you check them one after the other.

If you have a screw-in socket converter with an outlet, you can measure voltage in the light fixture directly safely.

Re: Blowing bulbs [Re: i_hate_autofraud] #4538022
10/09/17 12:11 PM
10/09/17 12:11 PM
Joined: Apr 2005
Posts: 600
NE Ohio
knerml Online content
knerml  Online Content
Joined: Apr 2005
Posts: 600
NE Ohio
Originally Posted By: i_hate_autofraud


If the fixture in enclosed, the lamp may be over heating, some fluorescents bulbs with screw bases don't take
heat well in the 'overhead' position, but do well in table lamp applications.

More rare is a voltage/ wiring problem, check various outlets near the light to see that 115 /120V is between
the flat slots with one slot giving full voltage to the ground socket, the other slot (neutral) should
be 2V or less to the same ground. A selection of sockets in the house should read nearly identical
if you check them one after the other.

If you have a screw-in socket converter with an outlet, you can measure voltage in the light fixture directly safely.


Good point about the enclosure.

Also, if it is an enclosure, some LEDs will overheat and burn out quickly. Must use an LED designed for enclosures. Will state so on package.


2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W20 & OEM/Mann W811/80 Filter
2018 Hyundai Santa Fe Sport 2.0T Castrol Edge 5W40 & OEM/Mann W811/80 Filter
Re: Blowing bulbs [Re: otis24] #4538103
10/09/17 01:12 PM
10/09/17 01:12 PM
Joined: May 2007
Posts: 452
South Carolina
pcoxe Offline
pcoxe  Offline
Joined: May 2007
Posts: 452
South Carolina
We had an issue once at work where a 120v receptacle was actually 208v. Have to be careful with adding circuits to three-phase panels.


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