The facts are that only GE closed down a U.S. bulb manufacturing plant
(Winchester, VA) and is now sourcing bulbs. The ones I saw in the store
recently were from Hungary. Osram-Sylvania is still cranking them out in
northern PA. Philips only sources bulbs.
No actually, our corporations are the best friend(s) China has.
Corporations have no loyalty, unlike citizens. If they can make more
money by screwing America, they do so. And they do so constantly. But
as long as the major stockholders (read 1%) are happy, that's all that
Politicians talk like they want to do something about it but in
reality they're just paying lip service to us regular folks. They
either own, work for, or are heavily invested in, these same
corporations. The money just rolls in. Why would they want to kill the
They just don't care. They're rich. If it all fell apart today, they
could live out their lives in lavish comfort, but it's not falling
apart today, so the machine rolls on and keeps raking in the dough.
Thanks, but that link isn't the last word.
From googling around, T8 bulbs work with the older T12 ballasts.
The scuttlebutt I found - for what it's worth.
The common T12 magnetic ballast in cheap 4' shop lights (pretty sure
that's what mine are - just know they were cheap) is 40 watts.
It will "overdrive" the common 32 watt T8 tube.
It is said that shortens tube life, but I couldn't find that measured
The common T8 electronic ballast found in 4' shop lights is 32 watts.
It is said using a T12 bulb in it will overheat the ballast and
shorten the ballast life, and you won't get full brightness.
I've got half a dozen 40 watt T12 bulbs left in the carton.
I might buy another one dozen carton, might not.
Don't know how long the T12 ballasts will last.
I've got a couple that will run only one of 2 tubes.
But I can put a T8 tube in them if I run out of T12 tubes.
As the T12 ballasts fail I'll switch to T8 fixtures.
But I don't want to put T12 tubes in a T8t, so I don't want to stock
up on them.
If that fails, I'll go to plan B.
Yes, T8 lamps are "brighter" than the T12 types; but they have about the
same lumen output (about 3,000 lumens for the full-wattage lamps). In this
case brighter means more glare due to the reduced surface area of the T8.
The newer T5 lamps (same light output) are worse, much worse.
It's nice that the 48 in. T8 and T12 can physically fit in the same
fixtures. Electrically, converting to the more efficient T8 by switching
out the ballast is the right way to go (and least expensive when energy
costs are considered) too.
I checked the 40 watt t12's I bought. 3200 lumens.
I had mentioned the workers installing 34 watt t12's at work, were much
brighter than the original 40 waters.
The thing I see, there are 34 watt t12's with nearly the same lumens as 32
watt t8's. Seems stupid to me except t8's must be 32 watt.
Right. The 34 watt T12s are "reduced wattage", but they work fine on the
same ballasts as the 40 watt types. They were developed to save energy.
There were similar developments with with T8s. The 4-foot T8 design started
out as a 32 watt, but there are now 4-foot T8 lamps rated for 25, 28 and 30
A 32 watt T8 is rated for 3000-3100 lumens -- same as for a 40 watt T12, but
the T8 is smaller, uses less glass, phosphor, etc. as well as saving
energy. Lots to like about that especially if you operate an office
building with thousands of lamps.
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