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51
Discussions - Public / Re: LED light bulbs are finally here!
« Last post by ilconsiglliere on December 03, 2017, 03:53:12 PM »
Gorn and Ilconsigliere -- I only wish I had your electrical talents. I hope to evolve to your level one day where I won't be paying through the nose for something I could have done myself.

Meanwhile -- I noticed that the new 60-watt-equivalent Ecosmart LEDs I bought from Home Depot are way brighter than the Ecosmart 60-watt-equivalent CFLs I have.

I looked at the lumens, and the brighter bulbs actually have less lumens than the dimmer ones (840 vs 900)!  Say what?  I thought lumens were supposed to be the measure of how bright the bulb is.

Then I discovered that the Kelvin "color temperature" is the definitive factor in my case.

The bulbs with the higher Kelvin CT seem much brighter than those with lower KCT (5500 vs 2700), even tho they have less lumens!

I never knew to look at this before. I incorrectly thought it was all about lumens and incandescent-watt-equivalents.

KCT chart and explanation -- www.lumens.com/how-tos-and-advice/kelvin-color-temperature.html

Its not hard to pick it up. I know you can do it as you are smart. I knew a lot of it from years and years of being around it but there is stuff I didn't know so I got this book many years ago:

Electrical Wiring Residential by Ray C. Mullin.

This is the book that electricians learn from in school. If you buy it new its like $100+ but you can get a copy off of Ebay for $10. No joke. You don't need the latest one which has all the current electrical codes. The codes keep changing all the time. Any book from the last 10 years is good enough. As LEDs are evolving so rapidly they are not typically in the book anyway.

Yes Lumens is a funny thing. I have seen the same thing myself. Kelvin measures the color temperature of the light I typically try to install recessed lights of about 3500-4000 kelvin. To low a temperature the color of the light is more golden, to bright of a temperature - like 5000-6000 its very harsh bright bluefish light.

You can see the color of the light in this picture:

52
Discussions - Public / Re: LED light bulbs are finally here!
« Last post by benali72 on December 02, 2017, 02:34:23 PM »
Gorn and Ilconsigliere -- I only wish I had your electrical talents. I hope to evolve to your level one day where I won't be paying through the nose for something I could have done myself.

Meanwhile -- I noticed that the new 60-watt-equivalent Ecosmart LEDs I bought from Home Depot are way brighter than the Ecosmart 60-watt-equivalent CFLs I have.

I looked at the lumens, and the brighter bulbs actually have less lumens than the dimmer ones (840 vs 900)!  Say what?  I thought lumens were supposed to be the measure of how bright the bulb is.

Then I discovered that the Kelvin "color temperature" is the definitive factor in my case.

The bulbs with the higher Kelvin CT seem much brighter than those with lower KCT (5500 vs 2700), even tho they have less lumens!

I never knew to look at this before. I incorrectly thought it was all about lumens and incandescent-watt-equivalents.

KCT chart and explanation -- www.lumens.com/how-tos-and-advice/kelvin-color-temperature.html
53
Discussions - Public / Re: LED light bulbs are finally here!
« Last post by The Gorn on December 02, 2017, 08:50:36 AM »
I love electrical work:

- Doing your own wiring inspires awe. Normies are scared shitless by electrical work. Nobody in the general population understands electricity.

- No water pressure or drainage to deal with and usually no leaks (grounding issues aside.) Electric is really clean to deal with. It's either: powering something; disconnected entirely; or shorting out.

It's really satisfying to buy a box of Romex for $30-100, a new breaker, and a utility box, and a few hours later you have a new outlet in your house that would have cost $300+ for an electrician to run.
54
Discussions - Public / Re: LED light bulbs are finally here!
« Last post by ilconsiglliere on December 02, 2017, 02:02:14 AM »
You mentioned that the thermal overload kicks in on the can. You may know this but there are IC (insulation contact) and non-IC (non insulation contact cans). IC cans are designed to be in contact with insulation and behave normally. NON-IC cans are designed to NOT be in contact with insulation. If the non-IC can comes in contact with insulation you can have a fire. Most cans have thermal overload protection to prevent the fire but you should check it. If its a non-IC can you should replace the can with an IC can or move the insulation away from it.

Thanks for the tip. One contractor installed the cans in 2000 and he was a dipshit I lost contact with, another did the insulation in 2007 and I maintain his website. I should ask him about this.

Although, if I installed LED bulbs into those cans the heat issue would be pretty much moot.

Yep, with the LEDs the heat goes away. Even when on for a while they are just luke warm to the touch. Halo has these LEDs that install into a regular junction box, you don't even need the can. Thats how cool these things are.

http://www.cooperindustries.com/content/public/en/lighting/products/recessed_general_purpose_downlighting/led/_6_inch_led_smd6/_889910.html

I should have been an electrician ;) .
55
Discussions - Public / Re: LED light bulbs are finally here!
« Last post by The Gorn on December 01, 2017, 11:18:24 PM »
You mentioned that the thermal overload kicks in on the can. You may know this but there are IC (insulation contact) and non-IC (non insulation contact cans). IC cans are designed to be in contact with insulation and behave normally. NON-IC cans are designed to NOT be in contact with insulation. If the non-IC can comes in contact with insulation you can have a fire. Most cans have thermal overload protection to prevent the fire but you should check it. If its a non-IC can you should replace the can with an IC can or move the insulation away from it.

Thanks for the tip. One contractor installed the cans in 2000 and he was a dipshit I lost contact with, another did the insulation in 2007 and I maintain his website. I should ask him about this.

Although, if I installed LED bulbs into those cans the heat issue would be pretty much moot.
56
Discussions - Public / Re: Are All LED TVs Pretty Much The Same?
« Last post by ilconsiglliere on December 01, 2017, 06:15:35 PM »
They are all made in the same lead and poison laced Chinese factory in Shenzhen, no doubt. I bet there are not that many (maybe 2 or 3) manufacturers at the top of the supply chain, tops.

I think you are right because I don't really see any difference between them.
57
Loco Stories / Humor / Re: Musk introduces the Tesla Semi
« Last post by ilconsiglliere on December 01, 2017, 06:14:15 PM »
Once those govmt subsidies run out, Tesla is toast. They are not profitable. Their products are geared toward douche affluent people that are eco poseurs.

People wonder why the traditional car companies are not heavily pursing this - its because its not yet profitable.
58
Discussions - Public / Re: LED light bulbs are finally here!
« Last post by ilconsiglliere on December 01, 2017, 04:51:42 PM »
I just installed LED recessed lighting in my kitchen.
....
We shall see how long they last. I am usually not an early adopter and wait for the price to come down. The prices of LEDs are coming down like a rock. I was disappointed with the CFL bulbs - none lasted as long as they said it would.

Niiiiiice. Thanks for the mini-review.

We have can lights in the kitchen that were installed in 2000, and in 2007 our contractor poured extra insulation in the attic. So there is one can light apparently covered in batting up above that from time to time goes out (thermal safety shutdown) right over where I cook.

Are LED lights capable of dimming?

I wonder if LEDs actually appropriated alien technology? I'm wondering. :D They seem a little too good to be true.

You mentioned that the thermal overload kicks in on the can. You may know this but there are IC (insulation contact) and non-IC (non insulation contact cans). IC cans are designed to be in contact with insulation and behave normally. NON-IC cans are designed to NOT be in contact with insulation. If the non-IC can comes in contact with insulation you can have a fire. Most cans have thermal overload protection to prevent the fire but you should check it. If its a non-IC can you should replace the can with an IC can or move the insulation away from it.

Also they are now making sealed cans so you don't  loose your heat or cooling up through the can. The bottom of the can has a rubber seal that goes tight against the sheetrock. I put in sealed cans even though I have another floor above.

Yes LEDs can be dimmed but not all of them. You have to read the side of the box, they usually say it outright whether they can be dimmed.

The one thing you do need is a dimmer that is capable of controlling LEDs. They have to be reverse or forward cut phase dimmers. I used this one:

https://www.homedepot.com/p/Lutron-Toggler-150-Watt-Single-Pole-3-Way-CFL-LED-Dimmer-White-TGCL-153PH-WH/202746671

The little tab/slot on the side next to the switch is the dimmer. Whats nice about these is they use standard wall plates. Works fine. If you don't use the right one you can get some weirdness with the LEDs:

https://insights.regencylighting.com/heres-an-overview-of-common-led-dimming-issues-and-how-to-fix-them
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Discussions - Public / Re: Are All LED TVs Pretty Much The Same?
« Last post by The Gorn on December 01, 2017, 11:28:18 AM »
They are all made in the same lead and poison laced Chinese factory in Shenzhen, no doubt. I bet there are not that many (maybe 2 or 3) manufacturers at the top of the supply chain, tops.
60
Discussions - Public / Re: Smartphone Durability Or Lack There Of
« Last post by The Gorn on December 01, 2017, 11:23:52 AM »
I have read that the Moto's are stock Android, thats a good thing.

The last Samsung device we bought in this house was my wife's Samsung Galaxy Tab A 9.7, which I bought her a couple of years ago. I was a bit off put by all the branding junk that Samsung puts in the the tablet.

The Moto's UI is extremely stock Android, and this is an unlocked phone (the only kind I'll buy unless a carrier has one hell of a deal.)
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