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Questions tagged [led]

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

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1answer
33 views

LED light with built-in switch; installing auto-timer between switch & outlet,

LED aquarium light (a bar with many small bulbs) with manual switch built into cord; Customer requested automatic timer. Placed automatic timer between LED's plug & wall outlet. Functioned well ...
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0answers
33 views

New LEDs go dim

Last night, I got this made in China ornamental led chain lights for decking up my balcony. It was working well for a while until about an hour after operation when it became all dim. I've used such ...
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2answers
29 views

Switching off dimmable LED flashes then switches back on

I tried to swap out a 70W 240V incandescent bulb with a dimmable 8.8W 220-240V LED. The switch is a dimmer switch, which probably has an old leading edge driver (the building is old). This mostly ...
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4answers
49 views

Wattage of adapter for LED strip

I have LED strip lighting under my cabinets in the kitchen. Recently, they started flickering with noise. Worked fine for a couple of years. I believe it was the adapter that was faulty. Unfortunately,...
1
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1answer
36 views

Replaced fluorescent tubes with LED tubes, the LEDs only turn on when tapped

I bought FEIT replacement LED tubes at Costco, item number T48/840/LED/2, and swapped them in for fluorescent tubes (the thinner style). When I switch them on, the pairs of LEDs barely illuminate. ...
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0answers
29 views

LED track lights slowly turn on one by one only to work at a fraction of output

I'm having a weird issue with my LED track lights and I can't seem to put my finger on what exactly is causing it. They seemed to work just fine until recently. Now whenever I turn on the lights, they ...
1
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0answers
71 views

Why LED bulbs doesn't work?

I bought London 3 light lamp and put 3 LED bulbs 6W. and doesn't work. Only when I switch on then flashed for second but only 3 times. Normal lamp works without problem. There is 2 cables. 1 cable to ...
1
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1answer
56 views

LED Light fitting has started making clicking sounds after power outage

The other day we had a power outage and apparently surge that was enough to blow out the PSU on my computer. A day or two later I've noticed the ceiling light in my office is now clicking, regularly (...
1
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1answer
52 views

Do LED dimmers work with non-LED bulbs?

I've been switching to LED bulbs wherever I can for the past few years but one thing I haven't done yet is switch my dimmer switches over to LED compatible dimmers. One issue I've had trouble ...
1
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1answer
30 views

Fluorescent lights sometimes don't turn on

I have two T12 double-ended G13 2-pin 4 foot fluorescent lights in my bathroom. They often (maybe 1/3 of the time) won't turn on, with a very slight glow in one corner, then usually turn on after an ...
0
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1answer
24 views

Outdoor LED lights runnng dim/flickering

These lights are Kichler hardscape step lights and mounted and installed professionally through a stone wall. They are wired to a 300 watt multitap transformer and the other two lines work fine. The ...
14
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2answers
3k views

How much power do LED smart bulb wireless control systems consume when the light is turned off?

I've been shifting to LED light bulbs due to the energy savings but I've a question about the new smart bulbs that are controllable via Alexa etc. These need to be kept "on" via the switch for them ...
1
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1answer
39 views

Surge Protection for Line Voltage LED Fixtures

I'm installing 120v LED recessed lights in a room, and I'm concerned about them wearing out prematurely. I've had bad luck in the past with florescent lights on the same circuit as the refrigerator. I ...
0
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1answer
37 views

NEC code-compliant hard wired hidden LED driver

What is an NEC code-compliant way to install a 15A 120V dimmer switch --> driver --> led strip set up that enables the driver to be concealed or out of view but accessible for an in-wall lighting ...
0
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1answer
19 views

How to set up this LED R7s lamp?

I would like to install an Osram LED R7s lamp using this holder in my living room. Now I'm wondering whether I can just hook it up with the AC like I would do with regular LED bulbs or do I need ...
0
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1answer
77 views

LED light needs replacing every few weeks

I have two GU5.3 bulbs in my bathroom - one of them went off a month or so ago so I bought the following 3 pack: https://www.wilko.com/en-uk/wilko-3-pack-gu53-led-345-lumens-spotlight-bulb/p/0437672 ...
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2answers
50 views

LED Tape Lights Strobing

I have tape lights that have worked perfectly for 6 years. They were wired into a switch and I have no idea if, or how a transformer was used. They are not on a dimmer. Even you you turn off the ...
0
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2answers
67 views

Why Aren't These LED Bulbs Lighting?

I have a dimmable floor light with 6 G4 bulbs. I ordered a bunch of dimmable LED bulbs and now that they've arrived after weeks, they don't light up at all. If I take one bulb off and place a halogen ...
0
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1answer
73 views

Outdoor led wall panel - reacting when hit by a ball

I want to build a 10-15'' square or round wall panel and hang it on a wall. This I call the target. My son is supposed to hit it with a soccer ball. When he hits it the panel should change its color e....
0
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3answers
81 views

Does my LED replacement bulb need to screw in all the way?

This feels like a very dumb question, but I just bought some LED light bulbs for my chandelier. I'm looking to save energy and thought upgrading my light bulbs would be a simple task. Well it seems ...
0
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0answers
23 views

Low voltage/low power on 2 out of 4 LEDs newly installed

PROJECT - Recently replaced two ceiling light fixtures with (4) Easy-Up 6 in. Deep Baffle Color Selectable Canless LED Recessed Kit, made by Commercial Electric. Also installed new switches; lights ...
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0answers
32 views

Fan led light unusual situation

We got new fan (hunter) It came with 4 traditional 40W lights. I want to replace these with 4 led daylight lights 6 w equivalent to 40W, I think. When I replace 1,2,3 out of 4 lights they are well ...
1
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1answer
55 views

Fast flickering LED kitchen light fixture

I have a LED kitchen light fixture which has been working great for around 18 months. There's no dimmer on it and it's controlled by a standard light switch. A couple of days ago it started flickering ...
2
votes
2answers
233 views

Why do these LED light bulbs flicker when my remote control has turned them off?

I bought some LED lights for my candelabra in my master bedroom. They're E12 bulbs (I think, since they do fit). Incandescents worked fine before. When I put these LEDs in there, they flicker when ...
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0answers
48 views

Dimmable range on one circuit is different to another. Why?

We've recently had some dimmable spotlights installed in our dining room. We have a setup where we have 3 lights off one switch, and 6 on a second switch. The lights were not dimming very much, maybe ...
0
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1answer
69 views

very confused on the wiring for recessed lighting

Trying to retrofit LED can lights by bypassing the ballast. First light I retrofitted had 1 white, 1 black, and one green ground wire in the junction box, along with 2 red and 2 blue leading to the ...
0
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1answer
282 views

LED's emitting high pitched noise

I have some LED lights hooked up to a trophy cabinet and for some reason it's emitting a fairly loud high pitched noise, does anyone know what this could be?
0
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1answer
62 views

Is it possible to drive led strips using a halogen driver?

I have a 12v halogen setup in my kitchen which I'm looking to replace with 12v led strips. I have everything working and the light strips work, until I unplug the halogen lamps at which point the leds ...
1
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2answers
88 views

Is untreated aluminium suitable as an LED heat sink?

I'd like to have a 5m LED strip lighting directed upwards from around 1m height (would be behind a desk and other furniture). My idea was a simple U shaped aluminium profile (so it can be screwed to ...
1
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1answer
28 views

Can I add copper wire led lights to existing 12V Landscape Light Transformer

I have an existing 12V low voltage landscape lights set on a transformer. I have a 66ft copper wire LEDs that came with a 5V adaptor. Does this have to be plugged in separately; or can i connect it ...
1
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2answers
84 views

Looking to replace light switches - 2x blue, 2x black wires

I'm looking to replace a light switch. Upon opening up the switch, I'm greeted with this: I would like to replace with this: For context, this is a commercial in-conduit wiring. I want to replace my ...
1
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5answers
182 views

Plastic-on-plastic lubricant that wont leave a residue?

I am working on an outdoor LED lighting project where I'm making my own rope lights to hold up to the elements. I am using waterproof LED strips which are surrounded in a plastic "jelly-like" material ...
1
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1answer
45 views

Color adjusting LED ceiling light intermittent issues

I recently installed CE color changing (5 temperature settings) LED all-in-one fixtures in my bedrooms and have been having an odd issue. I wired four fixtures with 12/2 Romex in parallel out of a ...
1
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1answer
65 views

How do you connect a long string of LED strips to power at both ends when including a controller?

I'm looking to use 24v LEDs (https://smile.amazon.com/dp/B01LYNJTBN/?coliid=I359TOA9WZGE2V&colid=3HRP4V1TLBJ6P&psc=0&ref_=lv_ov_lig_dp_it) along my fence to help light my pool area. I ...
3
votes
2answers
141 views

Several LEDs and LED bulbs in my house are failing at the same time and way before their estimated lifespan

I've never had this happen to me and, now, in a span of 1 month, it's already happened 4 times... The following 3 LED bulbs and 1 LED strip have become unusable: An Ikea Ledare 600lm spot LED buld (...
0
votes
1answer
193 views

How can I tell if a dimmer switch is LED compatible?

I have recently put some smart LED bulbs into my ceiling fan (Lifx if the brand matters) and there is a bad humming noise. Previously there was some humming in at least one of the LED bulbs (they ...
-1
votes
2answers
53 views

How to wire several 12V DC LEDs in serial

I want to connect about 9 LEDs (12V DC) using a simple wiring. For that I prefer serial wiring. But when I connect the LEDs in serial they don't working. When I connect in parallel, they are working. ...
0
votes
2answers
77 views

How to know if I can use LED ceiling light bulbs?

I'm renting a flat and need to replace some light bulbs. The bulbs I need are 12V MR16/GU5.3 bulbs. How can I tell if I can use LED bulbs as opposed to the halogen ones that are there currently? If ...
1
vote
1answer
68 views

LED Flat panel wiring — Type NM/Romex or Lamp Cord

I purchased several LED flat panel fixtures that came without wiring instructions. I’m using suspension cable kits to hang the lamps from an open basement ceiling with fiberglass insulation and TJI-...
2
votes
2answers
112 views

Single pole switch with lighting “zones”?

Somewhat of a challenge... I'm going from a single light to recessed lighting in my studio condo. There is a single pole switch that this single light is currently connected to. I'm going to install ...
1
vote
0answers
39 views

How to wire an entire room / kitchen with LED light strips?

As the question suggests, I'm looking into adding LED light strips throughout the kitchen (over cabinet, under cabinet, and kick -- I think under the countertop would be neat, but harder to hide). ...
2
votes
3answers
218 views

Dimming multiple led light bulbs (parallel or in series)

I'd like to install 5 dimmable led bulbs. I'm trying to find how to connect them. But I can't get a clear answer. I can get information of the benefits of wiring leds in series/parallel but none of ...
2
votes
3answers
32 views

How much wattage to choose for LED light when replacing flourescent light with LED?

Suppose I have a circular 22W flourescent light at home and I want to replace it with LED of similar brightness. How much wattage should this LED have? Any rule of thumb as guidance? The salesman at ...
0
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2answers
62 views

How to on this retrofit led recessed light

That's the inside of my can on my recessed lighting but the new retrofit led plug doesn't fit that. What do I have to do in order to retrofit a new led light in that old fixture to avoid me going into ...
1
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1answer
45 views

LED light is on when it should not be

I have 3 12v LED under cabinet lights that I plan to install. The final install goal is to have the line power (120v) controlled by a pre-installed light switch (1-way) which currently operates 4 pot ...
1
vote
1answer
47 views

LED Light in Ceiling Fan only works with a non-LED next to it

I have a Harbor Breeze ceiling fan with two light ports and a remote control. The lights are e12 (candelabra) base, but I need some brightness. I just bought some 12W LED bulbs (100w equivalent) and ...
0
votes
2answers
48 views

is it permitted to invert the line/neutral polarity on an AC->DC power supply?

I'm trying to work through the parts required for an LED strip light project. I'm considering this power supply as the driver, driving about 20' of 24V LED strip. I've worked with similar but ...
1
vote
5answers
120 views

LED Bulbs won't fit my garage door opener

These are the last bulbs in the house that I have not been able to change over to LED. You might be thinking to yourself, they only turn on for 1 minute, what is the big deal. I've started to notice ...
11
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3answers
2k views

Can someone explain how this makes sense electrically?

The wiring in my house is... odd. Nearly every pair of outlets has one of the outlets connected to a light switch. Sometimes that switch is quite far from the outlet even when there are other closer ...
1
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2answers
98 views

LED lights with a dim light in open circuit

I was installing new LED lamps on my kitchen, which seemed to be functioning well. After turning off the lights, the newly installed lamps still had a dim light, that kept itself for quite long. I've ...