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Questions tagged [led]

For questions regarding lighting that uses LED (Light Emitting Diode) technology.

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1answer
246 views

Does this picture look like a burnt out LED lighting or is something wrong with the fixture itself?

Does this picture look like a burnt out LED lighting or is something wrong with the fixture itself? The apartment was built a year and a half ago with these types of fixtures put in. Is this just the ...
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1answer
78 views

100W LED floodlight indoors, diffused by concrete ceiling 1 foot away

During the electrical lighting system failure at work on a grey rainy day I was stuck with 400W metal-halide reflector lamp as the only source of illumination. Thing radiates about 38.000 lumen, so I ...
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0answers
2k views

LED bulbs or dimmer switch causing buzzing?

I installed a light fixture that contains 4 dimmable GU10 LED lightbulbs. I also installed a dimmer switch (Feit Electric Model 72200) for the fixture. When I dim the bulbs to 50-85% on, I hear a ...
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0answers
484 views

What is the difference between Philips Essential LED bulb range & their normal LED bulbs?

I have come across two ranges from Philips for their LED bulb ranges, there is the 'Essential' range, which is the budget value range, & then there is the normal 'Philips' LED bulbs range. The ...
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1answer
255 views

LED Strip Power Supply needs to be unplugged/replugged to work

I bought a color changing LED light kit for my basement and found out it wasn't long enough so I bought another. I connected them together with an LED amplifier and it seemed to work perfectly. Except ...
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2answers
86 views

LED Bulbs - Which Measure is the Best Indicator Of Efficiency

I have been on a mission to slow replace all the bulbs to LEDs. At first, I use to judge the LED bulb's efficiency by looking at the % Energy Saving, that all bulbs have at the front of the box. ...
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7answers
9k 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 ...
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1answer
239 views

Do you need special recessed LED housing for angled / sloping ceilings?

Do you need special recessed LED housing for angled / sloping ceilings? I see that they sell them, but if there are enough recessed LEDs installed for good coverage, can't I just use regular housings? ...
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1answer
48 views

Can I have multiple outside LED strip lights coming from one driver?

I'm in the process of buying LED strip lights and understand that I need a 'driver' (to convert from 240v to [whatever the strip lights are]). I intend to have three strip lights, one for each step ...
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2answers
1k 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 ...
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3answers
6k views

What does it mean when an LED bulb 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 ...
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2answers
371 views

What spotlight beam angle to choose?

I am looking into buying some 5W LED 3000k GU10 spotlights with a rating of 450 lumens, for my gypsum soffits. The only part which is confusing me is what viewing angle I should get. I have found a ...
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0answers
350 views

Why is my kitchen LED lighting flickering

My kitchen light is blinking, is there a way to find out what is causing it and how do I fix it? Could the problem be with the dimmer? See below images of LED array, LED driver and dimmer switch, and ...
2
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1answer
809 views

LED bulbs in chandelier periodically all blink at once [duplicate]

Edit for clarity- The bulbs are not flickering or flashing. They periodically (> 10 minute intervals) turn off and then on in unison. I have a chandelier with 5 bulbs. I recently replaced all 5 60w ...
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2answers
220 views

Installing single-ended LED in a pre-existing T-8 fixture with only one connection per side

I have a set of new LED bulbs which want hot & neutral connection at just one end of each bulb. The fixture in question however is wired differently than I expected. It has just one wire per end....
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2answers
481 views

Is hooking up led lights to a timer cost effective?

I have 2 strings of small led Christmas lights above my cabinets in the kitchen as a accent lighting (probably about 100 bulbs total) I have each hooked up to a lamp timer, and they turn on for about ...
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1answer
2k views

Why have my LED bulbs started flashing when I turn them off?

I have six LED bulbs in my flat. They’re all the same model (LE 10W A60, bayonet fitting), and they were all purchased at the same time – September 2014. I bought them as a set of five and a single, ...
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3answers
2k views

Can I use a 15w LED bulb in a fixture that says max 40w incandescent or 11w CFL? [duplicate]

I picked up a light fixture at a reuse store and it says max 40w incandescent or 11w CFL. It doesn't say anything about LEDs. Thoughts?
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1answer
1k views

How do I fix this wiring to properly run LED lights? (More details/products added)

The people that lived in the house before me did something odd. They evidently intended on putting in under cabinet lighting in the kitchen, so when they tiled the back wall all around the area, they ...
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3answers
73 views

Do Most LED Hallway Lighting Fixtures have replaceable lamps [closed]

Most traditional hallway lighting fixtures have replaceable lamps (bulbs). I've been told that with LED sconces that "most" do not have replaceable lamps. For an apartment building that would mean ...
2
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2answers
3k views

Flickering lights

I am in the process of updating my guest bedroom and my first goal was to install LED recessed lights along with a ceiling fan(no light kit). The fan is powered by its own dimmer switch and the lights ...
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1answer
79 views

LED light strip

I have a very poorly lit sports room (6.5m x 5m) in a cellar in Germany and I really want to lighten it up. I thought about using 2 long extra bright LED strips/ropes (unsure of the terminology here) ...
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1answer
238 views

LED lights in bathroom

I have a problem in my bathroom with a switch and LED lights in the roof (6 of them). The switch is double; the right switch is for LED lights in the roof with a dimmer and the left one is for a ...
2
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1answer
1k views

HPS bulbs and ballast wattage compatibilty vs replacement technologies

I have a few questions regarding HID lamps, their ballasts and their replacement options and strategies. I have been spending a large amount of time researching this subject and I still have ...
11
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3answers
74k 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 ...
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2answers
324 views

Does my LED panel require a gap between it and the ceiling for cooling?

I've just bought an ultra slim LED panel that I was going to stick directly to a painted plaster ceiling with silicon or No-More-Nails. The back of the panel is made of a thin plastic sheet and well ...
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1answer
436 views

Control 12V LED circuit and 120V power supply from one switch

I want to have two switches (preferably in the same box) that control two separate runs of LED lights, both powered by a single Allanson power supply: I plan to switch the lights by breaking the 12V ...
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2answers
4k views

Light bulbs won't dim

Rectory we removed an old fan that had 4 a19 bulbs in it and replaced it with a new harbor breeze that had 4 cadleabra bulbs, we didn't like the light output or hue so I swapped the cadleabra bases ...
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2answers
56 views

12V lighting circuit

I'm about to commission a total refit and rewire of a one bedroom apartment in Spain. I'm considering completely skipping a conventional 220v lighting circuit, and replacing it with a solar-battery-...
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2answers
78 views

Power related question about LED strip lighting

I'm putting in some LED strips in my ceiling, but I'm really not sure how to play it. The total length required is 20mtrs, running in a near perfect square. At the moment, I have one power outlet I ...
1
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1answer
91 views

LED lamp turns off when turned on

I just bought a new LED lamp and, when I turn it on, it slowly turns off in a few seconds. Why does it so that? Is there a way to fix it?
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1answer
224 views

How to mount LED power supply

I am looking to install some LED strips in my closet to light it up. Since it is full of shelving, I figured I would run it up, across, and down the door frame (roughly) so the shelf contents could be ...
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0answers
2k views

Why do my LED bulbs refuse to work in one socket but CFLs will work?

I have 3 lights over my desk operated by 1 simple switch. I replaced all 3 with LED bulbs. Two of the lights work fine, but the other will work for a while and then stop. I tried 4 of the bulbs ...
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2answers
91 views

Energy Star LED bulb benefits?

On the Energy Star website, I see the claim: ENERGY STAR Qualified LED Lighting: Reduces energy costs — uses at least 75% less energy than incandescent lighting, saving on operating ...
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1answer
103 views

Lamp and dimmer installation

I'm currently installing a HALO LED SLD405930WHR (EATON) i bought the Lutron CL dimmer SCL153PRWH which is compatible according to EATON website. The HALO LED has 2 cables white and black, the jbox ...
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5answers
17k 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. ...
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2answers
9k views

Why do LED lights with a dimmer stay dim and won't go bright again?

I have a chandelier with five lamps. I brought an LED compatible dimmer and changed out the switch for the dimmer. I brought five dimable LED bulbs. The bulbs and dimmer worked for a little while, but ...
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2answers
1k views

Replace A T5 Fluorescent to A T8 LED

I currently have a T5 Fluorescent Fixture which one socket broke. I got a great deal on LED Bulbs which are a direct replacement to T8 Fluorescent bulbs. Would I be able to reoutfit the fixture with ...
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1answer
514 views

Direct Wire LED: T12 Replacement

CONTEXT An older office's 4-foot T12's are to be replaced with direct wire LEDs because the ballast cost + labor can be avoided. The instructions indicate that the hot is wired to one end and the ...
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1answer
53 views

Safety Backup Light

A set of lights is controlled by a 15 minute timer. Although most of the time customers finish storing / retrieving their items in under 15 minutes, some may exceed the 15 minute timer limit and ...
4
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8answers
18k 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. ...
0
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1answer
81 views

5W COB led recessed light on a parallel circuit having different Brightness

Here is my setup 1 Circuit containing 7 X 5W COB (chip-on-board) Recessed light Power supply -24V @6A rating I removed the individual power supply that comes with led light. I measured the output ...
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2answers
2k 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.
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1answer
68 views

Need help building a ceiling lamp (LED Pin-socket Bulbs to mains)

I have tried my best to gain as much information as possible, but I am mostly stuck at the connection part. To start with here is the goal of my DIY project: Now here is what all I have bought/...
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1answer
118 views

Seeking LED advice for toddler “busy board” [closed]

I know this is a little bit outside of the realm of "home improvement" but I thought this site was the best fit since it is full of handy people. I am building a busy board for my nearly 2-year-old ...
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1answer
251 views

2-way switches and LED Light glowing faintly when both switches turned 'on'

I have an LED light on the landing operated by 2 way switches upstairs and down. When both 2-way switches are in the 'OFF' position the light goes out completely. When the light is turned off by ...
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2answers
86 views

LED Bulbs not Starting Properly

Hi: I have some undercabinet light fixtures from IKEA that each take 3 small 12V G4 size bulbs. These bulbs are about 3/4" long x 1/4" wide with two plug-in prongs at the end. The original bulbs ...
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2answers
10k views

What voltage adapter do I need for a 5 meter 5050 LED strip?

I have a 5050 5 meter LED strip and it requires an AC/DC adapter to run the full strip. I was told that I needed a 2A adapter, but I went to electronic store to buy an end adapter and they said this ...
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2answers
109 views

Night Light Clip In Cord Incandescent to LED & Safety

I have one of those seasonal villages that use a clip-in accessory cord with a night light bulb that inserts into a 1" opening. The bulb is suspended by a metal clip. the standard incandescent 5W ...
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1answer
161 views

Installing LED Strip Lights [closed]

Re:50cm 9W 5630 SMD 36 LED Cabinet Light DC 12V I have recently brought the above strip lights. Can someone please advise me which drivers I need to order to: a) Power 3 of the above b) Power 2 of ...