Hmmm, there's been a 4' Flourescent fixture in my shop that's been intermittent. Sometimes/most of the time, it comes on and sometimes it doesn't. Eventually some many minutes later it will pop on. Of course, banging on it won't make it start. My DP and BS are right under it so when it doesn't work, Its annoying.
Finally replaced it with a 4-ft LED fixture from Amazon, same as three others I have... It was the last of my T12 fixtures and I still have three T8 fixtures and four LED fixtures.
I don't think I have had any T8 fixtures fail, many T12 over the years - at one time I had all T12s.I think 5 or 6 starting out. So probably 6 or more (probably replaced some T12 with newer T12s at one point) failures from both magnetic and electronic ballasts. So the T8s are a lot more reliable.
Just for grins I checked the T12 Vs LED... 56 W Vs 36 W and roughly the same brightness. So its better.
I've been putting cool whites 4000-5000 K in the garage where I originally had warmer colored.
Now, I've got a dusty, mostly working but sometimes intermittent T12 fixture I guess will get trashed. I think I still have more than a half dozen T12 bulbs from the office when they trashed the T12 fixtures and replaced then with T8. I guess those are trash, too. I only have one fixture left in the house with T12, in my study. come to think of it. Can you even buy the bulbs? I think so.
I probably no longer have a calibration source for my RPM meter. I used to be able to point it at a magnetically ballasted T12 fixture and it would read 7200 RPM, the effective frequency of 120 Hz (2 times the line frequency) fluorescents. Of course electronic ballasts use higher frequencies and can't be depended upon for a given value like the line frequency.
Any comments on shop lighting? Hasn't been discussed lately.
Finally replaced it with a 4-ft LED fixture from Amazon, same as three others I have... It was the last of my T12 fixtures and I still have three T8 fixtures and four LED fixtures.
I don't think I have had any T8 fixtures fail, many T12 over the years - at one time I had all T12s.I think 5 or 6 starting out. So probably 6 or more (probably replaced some T12 with newer T12s at one point) failures from both magnetic and electronic ballasts. So the T8s are a lot more reliable.
Just for grins I checked the T12 Vs LED... 56 W Vs 36 W and roughly the same brightness. So its better.
I've been putting cool whites 4000-5000 K in the garage where I originally had warmer colored.
Now, I've got a dusty, mostly working but sometimes intermittent T12 fixture I guess will get trashed. I think I still have more than a half dozen T12 bulbs from the office when they trashed the T12 fixtures and replaced then with T8. I guess those are trash, too. I only have one fixture left in the house with T12, in my study. come to think of it. Can you even buy the bulbs? I think so.
I probably no longer have a calibration source for my RPM meter. I used to be able to point it at a magnetically ballasted T12 fixture and it would read 7200 RPM, the effective frequency of 120 Hz (2 times the line frequency) fluorescents. Of course electronic ballasts use higher frequencies and can't be depended upon for a given value like the line frequency.
Any comments on shop lighting? Hasn't been discussed lately.
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