Incandescent reprieve

[notbob]

Fer all you lightbulb alarmists, looks like the sky is not falling. Find yer own links.

nb

[BobR]

Yes, now that they have closed down the last of the US manufacturing they change the rules yet again. Our own government is the best friend that China could ever as for.

[Caesar Romano]

On Sun, 18 Dec 2011 11:03:19 -0800 (PST), BobR wrote Re Re: Incandescent reprieve:

It's our way of saying "thanks" for all the money they lend us.

[Nono]

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.

Tomsic

[dgk]

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 counts.

[dennisgauge]

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 cash cow?

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.

[Steve Barker]

my local wally world still stocks ge 100w bulbs made in the usa, mexico, And china. I always buy all the usa ones on the shelf. I have over 400 of the 100w and 75w units instock now.

[gregz]

I was just checking my stock of 4 foot florescent tubes for the July cutoff. I guess I have enough. The last ones I was buying had at least 2200 lumens.

Greg

[Vic Smith]

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 anywhere.

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.

--Vic

[gregz]

In particular, T12 . They are saying you have to change the ballast to use the other tubes. I guess that means just buying a whole new unit. I was buying them cheap too. I got 5 in the garage. I also have a small supply of black light tubes. I also read something about different length tubes that would not fit the old fixtures.

If you search for info, they were suppose to do this in 2010 .

Greg

[krw]

Is Congress banning coffee too?

[Stormin Mormon]

Naah, Romney the Mormon might do it by executive order when he's inaugurated, next year.

[Caesar Romano]

On 19 Dec 2011 16:41:35 GMT, notbob wrote Re Re: Incandescent reprieve:

I would rather stock up on vitamins, protein power and Viagra (in case the first two need help).

[.]

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.

Tomsic

[gregz]

Some of the figures don't make sense to me for efficiency. What I do know, T12's are much brighter now than 15 years ago. Even some of the 32 watters are brighter. When they were installing new tubes at work, the brightness increase was dramatic. Last batches bought at home depot, I looked for the most lumens. If it didn't specify, I didn't buy.

Greg

[gregz]

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.

Greg

[.]

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 watts.

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.

Tomsic

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