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Blown lights #50868
04/13/05 09:18 PM
04/13/05 09:18 PM
A
AdamsAtoms  Offline OP
Member
Joined: Mar 2005
Posts: 24
Kennedale,t.x.,76060
I just insatlled 5/300W/120V outdoor quartz light bulbs for the 3rd time in 6 months. They are installed on an apartmnet complex. The bulbs that have all blown look the same. The tubes are black inside like they received alot more than 120V at one point. When I insatll the lights Im very careful not to touch the glass with my fingers. I installed a surge surpressor breaker in the panel feeding the lights the 2nd time all the lights blew, but now that they have blown again Im out of ideas.They are the only thing on a 20 amp circuit. Any help would ge greatly apreciated.

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Re: Blown lights #50869
04/13/05 09:56 PM
04/13/05 09:56 PM
J
Jps1006  Offline
Member
Joined: Jan 2004
Posts: 615
Northern IL
Are they on a multiwire branch circuit with a loose nuetral? Check the panel nut., all the individual nuetrals.

Re: Blown lights #50870
04/14/05 05:50 AM
04/14/05 05:50 AM
D
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
nowhere usa
I don't know if moisture would cause the "black marks" that you described, but would lead to premature bulb failure if they got wet. Check the gaskets around the lights, if all else fails to provide an answer.


Dnk...

Re: Blown lights #50871
04/14/05 11:42 AM
04/14/05 11:42 AM
B
Bill39  Offline
Member
Joined: Nov 2001
Posts: 75
Indianapolis, IN, USA
I had the same problem on mine and found a bad solder connection on one of the "posts" that comes into contact with the lamp.

After re-soldering it to the springy copper thingy again I haven't had to change any lamps.


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