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Old 04-10-2009, 04:15 PM   #1
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Flourescent Light Problem - RFI noise


I installed 6 - 8' shop lights (2x2 T8's) in my work shop. They are controlled on a 4-way switch circuit. The lights work great, however when they are on they create so much RFI noise that my radio turns to complete static! Even my truck radio "sizzles out" when I pull up to the workshop when the lights are on!!!

These are cold ignition start lights from Cooper. Any ideas what is causing this problem and how I can fix it???

Thanks,

Frank

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Old 04-10-2009, 07:56 PM   #2
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Flourescent Light Problem - RFI noise


Get used to it your using a H/O bulb

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Old 04-10-2009, 08:13 PM   #3
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Flourescent Light Problem - RFI noise


I have (3) sets of T-8's in my basement & I do not have any interference
I'm actually going with CFL's in recessed cans instead
Less power & I can spread the light out better
I'm going the same route with the garage

Is the radio on the same circuit?
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Old 04-10-2009, 10:23 PM   #4
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Flourescent Light Problem - RFI noise


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Originally Posted by dSilanskas View Post
Get used to it your using a H/O bulb
The bulbs are only 32w each...?
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Old 04-10-2009, 10:26 PM   #5
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Flourescent Light Problem - RFI noise


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Originally Posted by Scuba_Dave View Post
I have (3) sets of T-8's in my basement & I do not have any interference
I'm actually going with CFL's in recessed cans instead
Less power & I can spread the light out better
I'm going the same route with the garage

Is the radio on the same circuit?

Yes, the radio is on the same circuit at this time as I'm still using Temp power. Why would it make my truck radio get staticy when I pull up near the shop??
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Old 04-10-2009, 11:47 PM   #6
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Flourescent Light Problem - RFI noise


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Originally Posted by uokman View Post
Yes, the radio is on the same circuit at this time as I'm still using Temp power. Why would it make my truck radio get staticy when I pull up near the shop??
What kind of ballasts are in your light fixtures? My guess is magnetic because of the radio issues. An electronic ballast will not cause this issue, or at least no to such a severe degree.
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Old 04-11-2009, 09:38 AM   #7
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Flourescent Light Problem - RFI noise


Sounds like a shielding and grounding problem. Make sure the metal housing of the lights are grounded properly. Too many times I've seen a ground wire cut off or not connected by the installer.
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Old 01-28-2010, 09:04 PM   #8
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Flourescent Light Problem - RFI noise


Well, I have checked the grounding, tried different ballasts that are "supposed" to be the most noiseless ones available - GE MAX N Ultra... and alas I still can not operate my radio without MAJOR RFI noise. Even my truck radio fuzzes out within 20 ft of the building when the flourescent lights are on!

What the heck do I try next to fix this? I am literally about ready to burn down the building...

Does anyone have suggestions?... matches and some kerosene?
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Old 01-29-2010, 07:14 AM   #9
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Flourescent Light Problem - RFI noise


Nobody has had this problem and knows a "fix"????

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