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  #31  
Old 12-12-2017, 11:27 PM
Scratch Scratch is online now
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So a few days ago I ordered 2 of these LED tubes that are 48" long, and 2640 lumens for 7.99 each. (I only bought two bulbs because I only have one fixture that I can use these on) These LED tubes bypass the ballast and use my existing tombstones which are non-shunted already. I completely forgot about them, when they showed up today!
https://www.lightup.com/t8-4ft-led-t...s-lumegen.html


As soon as I opened them up, I just had to test them out by running a couple wires directly into the AC wall outlet. As expected, they work perfectly by just using two alligator clips on the end of a junk lamp cord... no tombstones, no fixtures, just laying on my bench, bright as heck, and cool to the touch.

Which got me to thinking...

If I could figure out a way to hang this bulb on the ceiling, like with tie wire or something, I could run a single tombstone to the power end of the bulb and this would work fine! I found tombstones for less than $.60 each here:
https://www.amazon.com/gp/product/B0...QOYWIPH9&psc=1


So for $8.58, I could have a 4' LED "fixture" that puts out 2640 lumens. I could even have an 8' "inline fixture" (keeping the powered tombstones in the middle) for $17.17 That would put out 5280 lumens! That would be the super easy, super cheap, ghetto way of lighting a room with LED's!

Of course I don't think the electrical inspector would like that at all...


But then I thought hey... for about 7 years, I've had all these extra steel single gang electrical boxes that my old boss gave me, (about 80 of them) and I have a CNC plasma cutting table. I could use two boxes for each bulb, and using my CNC table, easily make a box cover for them, with a perfect sized rectangle hole for the tombstone in each one. Then screw it to the ceiling and voila... a clean looking, inexpensive, electrically safe way to mount the bulbs. And it would only add another $.60 for the second tombstone.

The only problem I see is that I'd have to make sure I get them the exact correct distance apart but I do know how to use a tape measure so that shouldn't be that hard...


If I didn't want to do the two bulb thing, I could do the same thing, but instead, use this 8' bulb that puts out 4200 lumens:
https://www.lightup.com/t8-led-8ft-t...00-lumens.html

Then buy these tombstones priced at $3.72 per bulb:
https://www.amazon.com/CNSUNWAY-Tomb...fa8+single+pin

And I could have an 8' fixture with 4200 lumens for $22.71! Of course, these are double ended power bulbs so I'd have more wire to run, and the double 4' bulbs would be cheaper and more lumens anyways so the first option makes more sense.

Anybody see any problems with this?
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  #32  
Old 12-12-2017, 11:32 PM
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Scotts Scotts is offline
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Metamerism, a little info about color and perception lights and such.

Scott
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