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Old 11-21-2009, 10:27 PM
MEXANDME MEXANDME is offline
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Premature Bulb Burn Out / Help!

I have a customer where I am having premature bulb burn out problems with both MR16's and PAR36's.

Some facts:

All standard lights.....no LED's.
Bulbs are Ushio 5000 hour MR16 /4000 hour PAR36
Job was installed in July of 2009
Lights are on dusk to dawn
Vista MT series transformer
All transformer connections are good and tight
All wire connection and good and solid using King connectors
All voltage reading are between 11.1 and 12.0 volts
There are 13 lights and I have lost 14 bulbs since July / 12 MR16's &
2 PAR36's
Transformer is grounded
Transformer is plugged into a GFCI
Wire is Superflex

Any thoughts / suggestion?

If the customer is having Power surges or power spikes ( ans I have no idea whether or not they are), could that be a potential cause?

Thanks / Regards,

Ros
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Old 11-21-2009, 10:45 PM
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Lite4 Lite4 is offline
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Problem 1: sounds like your voltage is too high.
Problem 2: Your using Ushio bulbs. Use GE
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Old 11-22-2009, 01:12 AM
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Pro-Scapes Pro-Scapes is offline
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Ushios seem to like mid 11v the best. The 200 GE lamps I put in the field this year seem to be doing well in the upper 11v range

Like yourself I considered power surges We put in panel gaurds on alot of jobs but one thing I would consider doing first is double checking it with a different meter with fresh batteries. You could easily be off .3v on your readings and cause short lamp life.

Had another system eating lamps. One day I watched one of thier kids smack the fixture with a plastic bat. Mystery solved
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Old 11-22-2009, 09:00 AM
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Lite4 Lite4 is offline
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Quote:
Originally Posted by Pro-Scapes View Post

Had another system eating lamps. One day I watched one of thier kids smack the fixture with a plastic bat. Mystery solved
Ahh, Yes. The true nemesis of bullet lights. Thats pretty funny I experienced the same thing with one of my clients also.
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Old 11-22-2009, 10:47 AM
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INTEGRA Bespoke Lighting INTEGRA Bespoke Lighting is offline
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I would install a main panel mounted surge supressor / filter there. (intermatic PanelGuard) and see how it goes. Transients, Spikes and Surges can wreak havoc on the filaments of incandescent lamps.

I have found that Ushio lamps are more susceptible to voltage & current issues than GE lamps are.
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Old 11-23-2009, 09:14 AM
MEXANDME MEXANDME is offline
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James Solecki

James,

Would you recommend a good on-line supplier of the GE bulbs? I cannot buy in large volumes......I only use about 250-300 bulbs per year.

Thanks / Regards,

Ros
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Old 11-23-2009, 09:29 AM
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INTEGRA Bespoke Lighting INTEGRA Bespoke Lighting is offline
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Sorry Ros, I cannot help you there. Perhaps some others on here will be able to. I buy all of my GE lamps from a local distributor. You will find that GE constant color precise MR16 lamps do cost more than most others, but they are absolutely 100% worth the extra cost.

Would you paint a portrait for a client using 2nd grade paint?
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Old 11-23-2009, 05:56 PM
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Pro-Scapes Pro-Scapes is offline
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for that low of a quantity I would just pick up as needed from the local lowes so you didnt have to carry a large stock. Charge your clients accordingly for the more expensive lamps.
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Old 11-23-2009, 05:58 PM
quackgrass quackgrass is offline
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could this be a polarity issue by chance?
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Old 11-23-2009, 06:44 PM
MEXANDME MEXANDME is offline
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Quackgrass.....No loop feeds.

Regards,

Ros
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