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single ended vs. double ended led tubes

19K views 37 replies 19 participants last post by  Cosmorok 
#1 ·
I have been using the direct wire LED tubes...like them. My supplier has the single ended ones; now I am seeing the double ended ones coming out. I would like to use whatever is going to be the standard. What is that?
 
#3 ·
I just made this post in this thread: https://www.electriciantalk.com/f29/older-flouresent-fixture-251186/

I just want to expand on this a little since I was getting myself confused and looked into it more yesterday.

You can buy single sided LED tubes which get the neutral fed to one pin and the hot fed to the other pin on the same side. This requires unshunted sockets. I have never used these.

I have always used the doublesided LED tubes. These require neutral to one side and hot to the other side. The nice thing about these is that you can feed either pin, so they will work in both shunted and unshunted sockets. But since the pins are shorted together, you have to be sure to not wire both the neutral and hot to the same side, which is easy to avoid.

I installed a bunch of these today in T12 lights. I used the doublesided ones. The way I see it, those are the best to stock because they can work on either type of socket, as you said jw0445. The one thing I got confused on was that although they will work with both socket types, you still have to rewire them to keep the hot and neutral on opposite sides.

So this post will serve as my guide for the future.
These are the ones I have been using with great results: https://www.amazon.com/gp/product/B01C52MA2Q/ref=ppx_yo_dt_b_asin_title_o00__o00_s00?ie=UTF8&psc=1
 
#10 · (Edited)
I did a place a little while back. I recall like 2400 bulbs, T8-direct drive led.

I used single ended, and replaced the 3 tombstones on the feed ends. stones came prewired with pigtails. $.35 each, tubes were $6.60.

Single ended is the way to go, with new tombstones.
Cut all wires, and left ballast in fixtures to avoid recycling fees.

Time wise, we averaged 8 fixtures and hour/man.
Time includes all open cubicle areas, offices, and bathrooms.
Included about 12 2x2 u-bulb fixtures.


FWIW.

Keystone LED
 
#28 ·
I retrofitted a shop full of 8 foot fluorescents with 4 foot LED kits that included new tomb stones, brackets, and jumper wires. The lamps were single ended with no wires needed on the end tombstones. Only the center tombstones were connected to the 120 line that previously fed the ballast. I left the old ballasts in after cutting all the wires. Easy job, good profit. I can't remember the brand name of the kits but my supply house had them. So does Home Depot. They came with stickers to warn they were LED lamps.
 
#34 ·
Old thread but I do have a comment. I recently reworked 8' single pin T12 and T8 fixtures for keystone led lamps. The increase in light output is significant.
 
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