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17
votes
6answers
4k views

Can I safely use a 9w LED bulb in place of a 40w incandescent?

I bought a reading lamp that on the box says: Max 1x40W The shop also sold me an LED light bulb that says: 9W=75W So my question is, can I use light bulb or not? I am confused between the 75W and the ...
17
votes
3answers
2k views

Why do my led bulbs state: not for use in totally enclosed luminaries?

I recently bought some nice inexepensive LED bulbs but I noticed the warning states: (see image below) not for use in totally enclosed luminaries I am guessing that it gets too hot but I find it ...
17
votes
1answer
63k views

What do I need to install LED strip lighting?

I've been looking to install LED strips, either RGB or white for lighting and ambiance. It wouldn't be the main lighting of the room, so no necessity for high power LEDs. The perimeter of the room is ...
11
votes
4answers
6k views

What are the pros and cons of LED lighting for home use?

I'm interested in installing LED lights in my home, and I'm having a dilemma between buying LED bulbs and rolling my own solution. I have some questions on how to DIY: How efficient is it? Single ...
11
votes
9answers
45k views

Can I use an LED bulb in a 3-Way fixture?

Is it possible to use an LED bulb in a 3-way light fixture? Will all three work?
10
votes
3answers
86k views

Why do my LED lights stay on, even when the switch is off?

I have two LED lamps in my corridor, and when I switch them off, they keep emitting light (not very strong, but it's annoying at night). What can it be? How can I fix it?
8
votes
3answers
48k views

What's the difference between dimmable and non-dimmable LED lamps?

I have a large room in my house with 3 light fittings, with a total of ten 40W GU10 bulbs. So, this is using 400W when they're at max output (they're all on dimmer switches). I'm interested in ...
8
votes
7answers
54k views

What exactly is a PAR type LED lamp, how does it differ from R/BR type LED & CFL lamps?

I am in the process of replacing my incandescent bulbs with more efficient alternatives. My home is about 14 years old, I've owned it for a little over three years. It seems most of the bulbs that it ...
8
votes
4answers
10k views

Is an LED light strip safe to use under a bed?

I see a lot of RGB LED light strips being sold on sites like Amazon etc. The lights appear to be of decent quality, run off of 12V but do need up to 5-6 Amps to power. This is a lot of current, so ...
8
votes
1answer
9k views

How can I mount an 12V transformer for LED lighting inside a wall?

The stairs to my basement has one light fixture at the bottom, and that casts a shadow on the rest of the stairs. I want to run a strip of LED lights up the crown molding or on top of the upstairs ...
7
votes
3answers
61k views

What does that mean if my LED light bulb starts blinking when I turned it on?

I have an LED light bulb: Philips 60W incandescent equivalent I've owned it for about a year and have been very happy with it. This morning when I turned it on, it started blinking. Not flickering, ...
7
votes
2answers
12k views

Lutron LED/CFL Dimmer switch turns lights off the wrong way, up is down and down is up. What's the problem?

I bought the $20 Lutron Dimmer Switch (TGCL-153PH-WH) from my local big box hardware store. It dims the Cree LED bulbs great. There is just one problem... no matter how I install the wires the switch ...
7
votes
2answers
7k views

How to find LED Christmas lights that look more like traditional incandescent bulbs?

We just bought some LED Christmas lights that are labeled 'warm white', but when we hook them up they look ugly in the light they emit and seem very blue in their color to me. The specific kind I got ...
6
votes
2answers
5k views

What are the pros and cons of LED vs CFL vs incandescent bulbs for outdoor lighting?

I'm planning to install some light on my balcony and was just wondering what would be the best choice of lamp. I live in a relatively cold climate, and the current temperature at night is around ...
6
votes
1answer
2k views

Why shouldn't different types of bulbs be used in the same fixture?

Why shouldn't different types of light bulbs(i.e. incandescent, LED, cfl) be used in the same fixture? I read this under the CAUTIONS & WARNINGS section of the LED bulb packaging. ...Do not ...
5
votes
2answers
6k views

Can a low voltage light switch be located in a closet as opposed to outside the closet?

Okay you guys I have next question. And like all good questions this one begins with a story. I was reading the post about a nick in a wire and read a couple of you mention that light switch in a ...
5
votes
7answers
5k views

Why will 26 1.2W 220V LED lights not work with an 800W inverter?

We live off the grid and have just installed 26 220V 1.2W LED lights. We are using 220V as the batteries are some way from the house and and thick copper wire is expensive. Everything works on the ...
5
votes
3answers
8k views

Can I dim LED lights when there are two different switches for the same fixture?

I would like to place dimmers in two different rooms that are sometimes a bit over lit. Is that possible when both areas have two switches for the recessed lighting? Do I need to replace both switches ...
5
votes
1answer
10k views

Why does an LED light turn on and off irregularly while the switch is in the on position?

We have had a LED light in the family room for several months now. In the past week it has started to act funny. We turn on the LED light and after a while it turns off and then goes back on and then ...
5
votes
3answers
549 views

What is a good PWM driver for LED lighting?

I am looking at lighting options for my new flat. I'm looking for any recommendations and suggestions for the components to power and control the LEDs. If we consider the main room (i.e. the open ...
4
votes
7answers
8k views

Will switching to LED lightbulbs make a significant difference in my electric bill?

I asked Reliance Controls about a THP103 meter that I was having trouble with. Turns out that it's not a true RMS meter and thus is unable to give you accurate readings on a CFL or LED installation. ...
4
votes
3answers
2k views

Does the Lutron Maestro C.L Dimmer Exist?

Lutron offers a family of "C•L" model dimmers (for use with dimmable CFL/LEDs) which includes the Maestro product line: ...
4
votes
1answer
765 views

How to turn off a light sensor LED light?

I've got a light on my condo building and I'd like to figure out how to turn it off. It's currently operated by an automatic light sensor (turns off when it gets dark). I want to setup better ...
4
votes
5answers
35k views

How can I convert my under cabinet lighting from halogen to LED?

Our kitchen has under-cabinet lighting that uses halogen 20 watt G8 socket bulbs. With 15 bulbs in the kitchen that is 300 watts. I'd prefer to replace them with 3 watt LED bulbs. I've been ...
4
votes
2answers
3k views

LED lights delayed when turned on

I had my house built last year and after moving in noticed that in our living room (6 led downlights) when we turn our lights on 5 turns on at once and the 6th one will be delayed ranging from 1/2 sec ...
4
votes
1answer
2k views

How to prevent blinking LED on a three way Lighted switch circuit with only one light fixture?

I have a stairwell that has only one wall sconce with two switches that are lighted when off. one upstairs, and one downstairs. I recently replaced Sconce, and added an LED 60 watt bulb; I triple ...
4
votes
1answer
53 views

How do I label fluorescent fixtures converted to LED?

I am going to replace some regular fluorescent tubes that are about to burn out with LED ones and would like to add a sticker inside the fixture to advise a future owner to not install regular ...
4
votes
2answers
6k views

What should I do to increase the dimming range of LED bulbs?

We started doing most of our homes in LED last year. I am a big dimmer fan and would pretty much put a dimmer on any light switch. One thing that I haven't gotten down is the dimming range of the ...
4
votes
1answer
718 views

What alternatives to R20 bulbs can I use?

When we bought our house, the lighting fixtures in the ceiling came with R20 bulbs. I know nothing about lighting so I figured that only R20 bulbs are compatible with our fixtures. But I'm realizing ...
4
votes
1answer
996 views

Replacing Halogen with LED bulbs

I've just purchased some 12V LED MR-16 bulbs, intending to use them to replace the existing 12V Halogen MR-16 bulbs in my bathroom. I have found, much to my chagrin, that the LED bulbs seem to have ...
3
votes
4answers
11k views

What do I need to know about LED strip lighting?

I've read a ton of various posts about different aspects of LED lamps, strips, comparisons with fluorescent and incandescent lamps, and I decided that I want to install LED strips to light my room. ...
3
votes
3answers
13k views

How can I replace failing ballasts in recessed CFL housings if I don't have access to the attic?

I have a set of recessed CFL (4-pin) lights and a few of the ballasts are failing (CFLs fail to start randomly, even after replacing them with new sets). They are NHPSIC-626ELAT, CFL (4-pin) ...
3
votes
2answers
1k views

What kind of light can I install in a small, low-ceiling coat closet?

Our Northern California house has a small coat closet (really a hallway with 2 doors and hooks for coats) between our front entry-way and our basement. It's a tiny space: 3 feet wide, 5 feet deep, and ...
3
votes
4answers
1k views

How can I light picture frames from the floor?

I would like to light up three picture frames with something from the floor. They will be behind a sofa so we wouldn't see them and the picture frames are about at 1.5 meter above the ground. I have ...
3
votes
5answers
13k views

What are my options for replacing 50W GU10 lightbulbs?

I've been looking at replacing 50W GU10 halogen lightbulbs for something more energy efficient. Some people say that LEDs cannot give you the same light (even 10W LEDs), and to use 11W CFL instead, ...
3
votes
1answer
61 views

Can I cut the recessed lighting housing rails to make them fit in joists 12" apart?

I have this guy -- I got new work since the drywall was removed. Can I cut the excess rail (past the nail) so it fits the joists, which are 12" apart? Or does that mean they're isn't enough space ...
3
votes
5answers
8k views

What can I do to avoid incandescent bulbs for my 3-bulb ceiling fan, yet maintain brightness?

My ceiling fan takes 3 candelabra (E12) base bulbs for lighting. The bulb slots are labeled 75W - 125V. The fan light is dimmable and I currently use 3 60w incandescent flame tips. I plan to ...
3
votes
1answer
82 views

How do those glowing LED faucet aerators power themselves?

Google LED faucet aerator and you'll see dozens of different color-changing faucet aerators (and showers), most of which are powered just from the stream of water. How do they generate the necessary ...
3
votes
1answer
91 views

What are Filament Style LEDs and how do they work?

I've been seeing lots of references lately to filament style LED bulbs. These seem to look exactly like traditional bulbs in that they have filaments. Are these any good and how do they work?
3
votes
2answers
120 views

What does it mean when a lamp/led starts blinking randomly?

Recently I noticed that my led bulb turns on/off for a split second randomly over the past few days. Does this mean it is starting to die or could it be something wrong with the lamp? I've unscrewed ...
3
votes
1answer
130 views

Extractor fans not working with LED bulbs?

I have 2 bathrooms, each with both an extractor fan and a ceiling rose mounted light bulb. The fans are Greenwood Airvacs. They are 20 years old. The fans have automatic run ons of about 15 minutes ...
3
votes
1answer
237 views

Why are LED bulbs in a cooker hood flashing when I put in the fourth bulb?

I replaced 4 bulbs on a cooker hood with LED bulbs. Three will work ok till I put in the fourth; then they flicker once when turned on but will not stay on.
3
votes
3answers
2k views

Multiple weak light bulbs vs one strong light bulb

I currently have a small room with a single CFL bulb at the center of its ceiling. The bulb lights up the whole room well enough. I encounter the problem though that when standing in front of the ...
3
votes
1answer
6k views

Will a non-dimmable LED work if the dimmer switch is on full?

If a dimmer switch is fitted for the room but we get non-dimmable LED lamps (GU10), I know there may be flickering problems with dimming, but will they work fine if the dimmer is turned to max?
3
votes
4answers
5k views

How to wire MR16 LED lights?

I am building a wall cabinet with downlights in the shelves, for which I would like to use MR16 LEDs. However, my first attempt was obviously deficient, since two of the LEDs blew. I'd appreciate some ...
3
votes
1answer
269 views

What type of centralized home control hardware is available?

I recently got excited about the idea of creating a web software to run locally for my home that could be accessed via computer, smart phone, or tablet, which would give me complete control over most ...
3
votes
1answer
34 views

Only 2 of the 3 LED bulbs lite up

Two light fixtures in bathroom with 3 bulbs each. They can can 100 watt incandescent, I have 800 lumen LED, and there is a dimmer switch. In both fixtures, going left to right, the first two bulbs ...
3
votes
3answers
1k views

Replacing G4 halogen bulbs with LEDs

We've got 12V halogen G4 fixtures mounted under our kitchen cabinets and would like to use LED's instead. I found some G4 LED bulbs on Amazon, and they fit in the fixtures just fine, but if I try to ...
3
votes
1answer
841 views

How to use LED lighting strip on ceiling?

In our living room, we have a single ceiling rose in the centre of the ceiling with a boring light fitting on it. I'd love to replace this with 4 led strips (about 2m each) running from the centre to ...
3
votes
1answer
519 views

Are there alternatives to a traditional dimmer switch?

I have just had some 230V GU10 LED downlights installed in my living room (by a professional) to replace a traditional pendant fitting. At the same time, we added a (mechanical) dimmer, however it ...