T8 LED tubes question

[biggziff]

I ordered a few of the Diva light T8 4' fixtures and bulbs to try. If I install the bulbs so that the L and N on the bulbs match that on the fixture, there is a dark line in the bulb facing outward which I assume is the LED strip. Is this normal with these? I did rotate the bulbs so the dark line was facing towards the fixture and the lights seem to work fine. Is this dark line supposed to be facing one way or the other?

Bulbs:

https://beeslighting.com/led-t8-tube/p/T8R-48-22L-40K-B

Thanks

 

[apollo11]

Dunno but I rotated my bulbs bright side down
YMMV

 

[biggziff]

Dunno but I rotated my bulbs bright side down
YMMV

Ya, just talked to them and they said polarity doesn't matter on these.

 

[Platonic Solid]

The bulb you linked to has a 230° Beam spread. Thus, I'll assume the "dark line" you're referring to is the remaining 130° which should be facing away from you towards back of fixture so you get the most light directly out of the bulb. If I'm understanding you correctly.

 

[biggziff]

The bulb you linked to has a 230° Beam spread. Thus, I'll assume the "dark line" you're referring to is the remaining 130° which should be facing away from you towards back of fixture so you get the most light directly out of the bulb. If I'm understanding you correctly.

Thanks. This is what confused me. The beam spread would have to be measured from the unobstructed side and yet the manual said you *must* pay attention to the polarity. Guess not!

 

[Ferrari1904]

So LED lights are so much better than incandescent light or fluorescent. according to this article https://www.sompor.com/how-to-choose-led-driver/since They last around 20 times longer and consume up to 90% less energy when compared to halogen or incandescent lighting, which helps you save money on your energy bills. While still maintaining similar levels of light quality, and they also come in a wide variety of unique colors, meaning you can achieve a great look to your applications.

 

[Astross89]

Biggziff. Was just checking in to see if you were happy with the fixtures? Would you purchase again? Or go with a different brand? Thank you.

 

[biggziff]

Biggziff. Was just checking in to see if you were happy with the fixtures? Would you purchase again? Or go with a different brand? Thank you.

They're fine, no issues. I ended up going with LumeGen 10400 lumen hi-bay units for the new shop. More money, but the light is fantastic.

 

[Astross89]

OK. I guess I'll stop trying to go cheap. Hi-bay it is.

 

[cory58]

OK. I guess I'll stop trying to go cheap. Hi-bay it is.

I don't think it's a matter of cheap or not. It's the correct light based on the need. The fixture/bulb that the OP tried is not a high bay, so it would be better for low ceilings. If you use a high bay fixture in a low bay application, you will be disappointed and waste money.

Based on a lot of good advice here on GJ, I am using a combo of the Maxlite/GLL strips along the edges of my garage (hung at 11') and high bays down the peak (at 15'). So far I have approx 75% of the strips hung and get the same comment from my buddies that stop by - "It's gonna be bright in here when you're done.

Hope this helps.

Cory




Sent from my iPad using Tapatalk

 

[Astross89]

I don't think it's a matter of cheap or not. It's the correct light based on the need. The fixture/bulb that the OP tried is not a high bay, so it would be better for low ceilings. If you use a high bay fixture in a low bay application, you will be disappointed and waste money.

Based on a lot of good advice here on GJ, I am using a combo of the Maxlite/GLL strips along the edges of my garage (hung at 11') and high bays down the peak (at 15'). So far I have approx 75% of the strips hung and get the same comment from my buddies that stop by - "It's gonna be bright in here when you're done.

Hope this helps.

Cory




Sent from my iPad using Tapatalk

I have 10ft walls. 13ft top center. Should be good?

 

[cory58]

I have 10ft walls. 13ft top center. Should be good?

I will defer to the posters who really know (Platonic Solid), but my understanding is that 10 ft is too low for high bays. 13 Ft is on the lower end for high bays, but I think people successfully use them at that height.

Cory

 

[Astross89]

I will defer to the posters who really know (Platonic Solid), but my understanding is that 10 ft is too low for high bays. 13 Ft is on the lower end for high bays, but I think people successfully use them at that height.

Cory

He said the 10k ones are good. Thanks

 

[Platonic Solid]

Yes, 10K is fine.

 

[syhdeejey]

They're fine, no issues. I ended up going with LumeGen 10400 lumen hi-bay units for the new shop. More money, but the light is fantastic.

Hi-bay is brighter than tubes,even they take more money,I think it’s worth it.This Hi-bay can change beam angle (60°/90°/120°) by replacing lens.Also,the light is much softer than other lights.

 

[CarGuyX]

I have a 1800 sq. ft shop with 12' ceilings that I light with six high bay lights, each with eight T54HO bulbs. I bought them at an auction for $20 each with bulbs (damaged packaging), so it isn't as if I shopped around for a perfect solution. I'm no expert but the lighting looks great to me, even if they aren't recommended for ceilings as low as mine.

I do intend to convert them to LED when my budget allows it. They don't make LED's that work with the ballast, so I'll have to bypass them when I do the conversion.

 

[GRB]

I have a 1800 sq. ft shop with 12' ceilings that I light with six high bay lights, each with eight T54HO bulbs. I bought them at an auction for $20 each with bulbs (damaged packaging), so it isn't as if I shopped around for a perfect solution. I'm no expert but the lighting looks great to me, even if they aren't recommended for ceilings as low as mine.

I do intend to convert them to LED when my budget allows it. They don't make LED's that work with the ballast, so I'll have to bypass them when I do the conversion.

I have one 4xT54HO unit in my garage at home mounted at 8'. It helps that the bulbs are not real close to each other and there are recessed into the fixture enough that you don't typically get a clear view of the bulb directly. This is one of those things that generally aren't good when mounted low but it can work very well if you are careful how you use it.

It could be a problem if converted to LED since more light will be directed down due to the nature of most LEDs. If you decide to go that direction, you might want to try converting just one and see how it works.

 

[CarGuyX]

I have one 4xT54HO unit in my garage at home mounted at 8'. It helps that the bulbs are not real close to each other and there are recessed into the fixture enough that you don't typically get a clear view of the bulb directly. This is one of those things that generally aren't good when mounted low but it can work very well if you are careful how you use it.

It could be a problem if converted to LED since more light will be directed down due to the nature of most LEDs. If you decide to go that direction, you might want to try converting just one and see how it works.

That is an excellent point. Currently the fixtures have reflectors on top that disperse the light and I bet the replacement LED's wouldn't use that feature. I will test carefully before moving forward. Thanks for the advice!

 

[cybrdyke]

. They don't make LED's that work with the ballast, so I'll have to bypass them when I do the conversion.

they do. In fact, in the T5HO version, there are more LED tubes available that work with the ballast than those that work without. All the large lighting manufacturers make them...Philips, Sylvania, Universal, etc etc...
Good luck,
CD