Formula to figure out watts for LED's / How To Choose a Power Supply for RGB LED lights
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- เผยแพร่เมื่อ 15 ก.ย. 2024
- How do you know which power supply to choose from? I'll teach you how to work the formula to figure out watts for LED's so you can choose a power supply for RGB LED lights for any project. If you have any questions afterwards feel free to contact me and I'll be glad to help you. If you have any questions or you would like for me to do research on something, feel free to me and I'll might make a video to answer your questions.
Thank you
One more point, on the side of must Power Supply there is a red switch that you will need a small screwdriver that you will need to push to 110V from 220V. Because these Power Supply are used world wide they have two settings to accommodate European or USA power.
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Formula
Power 19.2W Per Meter
5M Per Reel
19.2 X 5M in a Roll = 96W Per Reel
96W X 4 = 384W
384W X 20% = 76.8W round up to 77W
384W + 77W = 461W round up to 500W Power Supply
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I had figured this out but I wish I had watched this first. It would have saved a lot of time.
The main thing that you got it figured out. I have another YT channel bit.ly/3b5qDig that I hope you would like. It's all about Food & Places
Thanks boss, great video. Nice shirt!
I think youre one of the only videos on youtube about this topic!!
Glad it was helpful!
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Dear Sir,
I don't subscribe easily, but you and your content deserved to be subscribed!😊
Thank you
Terrific explanation. I have been looking for videos that "slowly" explain that calculation. I am easily confused with all things electric but want to understand and luckily have alot of soldering experience. LED's are such a lovely effect and I really want to know how to safely utilize them. Thank you for sharing this info.
You are welcome. If you have not done so please subscribe to my channel I have other videos that can explain more. I also talk about other cool stuff and give my video a thumbs up I would appreciate it Thank you
finally someone who actually explained the most confusing part of custom rgb led lights. Thank you!
You are welcome. Would you be inclined to give the video a thumbs up if you like the video
Great lead up to the latest video! Good explanations!
Higher voltage would draw less amperage. The wattage (power) remains the same. Lower amps lets you get away with smaller wires. Other than my nit pick, excellent job.
AS USUAL...GREAT VIDEO CONTENT! KEEP UP THE GREAT WORK MY BUDDY!
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Good info, easy video. Nice job!
Thank you
Thank you so much, I almost threw away the bag.
I'm glad I was able to help.
Nice video sir very helpful
That has helped me a lot! How do you connect all four reels to the supply
I have other videos on my channel show how.
I didn't read every comment but a couple questions.... In your example you said you need 500 watts.... Would you personally use a 500 watt power supply or can you or would you use 2 - 250 watt power supplies one at each end?....
I thought in another video you mentioned putting a power supply at each end so the farthest leds didn't go dim. But maybe that was only if you had a weaker than needed power supply?....
you can do two 250 one on each end.
its bizarre that the 5v ws2812b draw more power than 12v ws2815
👍
can you show how to connect 4 lines to that power supply?
please explain more. are talking about just white light?
Awesome video. I’m curious if my power supply is 30 to 40 ft from the area that I’m wanting to place my led lights, is there wire you would recommend?
That is not that far we're you can use a 22/4
@@thebesthowtobyclem6908 Appreciate the response!
Thanks man
you are welcome
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With this would you need to still need inject power on the other side ? Or can this be powered off the one end ?
if you have 24V only if you go over 32 feet. if you have 12V only if you go over 16 feet unless you tap in the middle. what mean by that is if you have 12V and 32 feet of LED then you can tap in the middle at 16 feet then the power will go both ways. I hope this will make sense
@@thebesthowtobyclem6908 Thanks youve fixed my issue.
Wouldnt your setup having a voltage drop issue?
Can you be more specific please.
At 64 feet of LED’s yes, you’ll need power injection several places even at 12v.
Great explanation. Thanks.
I am a novice and need help.
I am trying to set up a led accent wall and here is my design.
I have "4" 12V WS2815 LED Strips of 5 meters each with 60 LEDs/Meter so a total of 1200 LEDs.
I want to place two strips on the left side of the wall and 2 strips on the right side of the wall. All strips should run the same effect when powered on.
I have a single PSU unit. How can I connect all these 4 strips to PSU and to Athom LS-8P controller such that they have same effect when powered on?
You need to make sure that the controller can handle all of those LEDS. Did you make the calculation like i showed you on the video? And does your controller can handle them?
Watts indicated is the equivalent brightness ( lumens ) emanates from the led / foot and NOT the rated power drawn by the load...
Sorry not per foot but per meter ( 19.2 watts / m).... 1 watt = 14.333 Lumens
thanks ....please suggest....i have brought LED string lights from USA to india.
now looking for a correct power supply.......details....LED Outdoor String lights with ST38 Bulbs...Model: CMC-O501
Total Length: 100FT
Number of sockets: 50 each
Voltage: 120V
Wattage: 1W
Bulb Type: ST38LED
Voltage in India : 230 volts
Please suggest
Thanks
I normally do not use 120V LED. But the formula is the same to figure out the W. But the difference is the you will need a PS from 230V down to 120V.
Good evening help please. . I have a 5 meter long 12V LED. (FCOB I RGB IC LED light strip, WS2811). it consumes 12 watt/m so requires 12*5 = 60. + 20% it gives 80 watt. I plan to buy an esp32 for the controller with wled. I know that I have to buy a 12v power adapter which provides 80 watts even 100 watts. questions: you never talked about amps in the video, should I take amps into consideration or not? Does the power adapter adapt according to what the LED requires? Can I buy a 150 watt power supply without problem? (I plan to add another LED in the future). help me please
The amp is not an issue. Just be careful in adding to much watts, because you are going to add in the future you should be OK as long as you add the light to it.
what if you didnt have the package with the label? and say you had a foot or so of an led strip? could you count the number of led diodes and calculate it and figure out how many watts you needed? how would you go about that?
Great question, normally you would want to contact the manufacturer or distributor. If you are only talking one foot or even up five feet, you can have a 25W to 50W PS. If the LEDS are really bright and you do not have the label, then using 4.7 X length in feet can give you a ruff estimate. If it's not bright then you can use 1.4 X length in feet. If you are running more than two reels you MUST calculate what you need to make it work efficiently. I hope this helps.
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All I want to know is how the heck I can get a constant Voltage reading from my 12.6 V 3S2P Li-Ion battery after connecting it to a non-RGB Led strip [2m] light.
I get voltage drop and my volt meter does not give me an accurate reading when the LED strip light is plugged in.
All I want the Volt meter to do is give me a percentage of the battery capacity that is left in the battery. Nothing else.
Battery: 50Ah
LED (Red) 12V - 2m Strip
I'm sorry, I'm not able to help with that.
Mine doesent have a label or a sealed pack, what should i do 😢
get with your seller to find out the info.
Hi, how do you work out what total watt led driver i need for a 10 metre 24v rgbw led strip pls.
I believe that I have explained how to figure it out on this video. But you need to make sure that you get some information from the manufacturer that should be on the package in order for you to work the formula. If not on the package then call the distributor to get that info.
Hey Clem is possible to use cat 6 wire with 24 v RGB W with 5m strips
I have used it in the past. It's OK, But I prefer 22/4
please respond to me if you are still helping with LED light power supplies, I have a few questions as I try to fix my huge blue tooth speaker lights that stopped working. I want to make a new toggle switch and be able to plug it directly into a house wall plug, but need to figure out the correct power supply numbers needed based on the led light panels on the speaker. there are a total of 10 separate light panel boards. Thank you and I hope to hear from you soon.
I don't know if I would be of great help. You would need to know the voltage of the LEDS and totally bypass the blue tooth system. Send me some photos but I cannot promise anything.
@@thebesthowtobyclem6908 where can i send you the pics and the voltage info?
carrionclem@gmail.com
Thank you very much. I have a particular project that I'm building. I put it aside for two years now because I'm not able to power it correctly. I had spent $1,000 and its in moth ball's because can't get it to work. Im afraid I have damaged it but not sure.
I'm glad that I can help
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@The Best How To By Clem
Will do.
I’ve got a Razer back neon sign 10inch by10inch How do I covert it from 120v to 12v
Is the neon was not manufactured to be used for both 120 and 12V then you will not be able to convert it. You will have to purchase a 12V neon which they make LED neon that is 12v.
How do I get that information if my LEDs do not tell me any of that information?? My LEDs did not come with that label and when I go on amazon to find out the W/m it doesnt say anything on that. How do I figure this out? Im running WS2811 addressable LEDs
Unfortunately there are a lot of cheap companies that are producing LEDS and not giving that info. Sometimes you can find it in the description when you purchase them. Another option is to buy a special meter that you connect to the LED and it will tell you how much power you are drawing per roll if you connect the whole roll.
Hello can you help me please
I have a BTF-LIGHTING ws2812b 60/metre led strip of 18w-90w 5 volts DC WHAT WILL BE THE GOOD Power supply? I saw your videos but the calculations are made from 12 volts
thank you very much and congratulations for your good work
Norman
I'm sorry but I have not worked with 5v
Ohm’s law. Watts equals voltage x amperage. From here you can switch it around. You have your voltage and your watts so it’s simple math. But 90 watts is 90 watts regards of voltage, just have to worry about the current (amperage).
Not a good idea! This wattage per foot will require a welding hood when you turn them on. You should never run that many watts on one power supply. Your asking for a fire.
I have been doing this for over 10 yrs. Our company has done work for major companies and high end restaurants and several islands with highly satisfied customer and very little call backs if any. So my friend, I do have some knowledge about this subject. Unless you are misunderstanding something I said.
Let’s say I have 16 feet of length on an under cabinet and the led diode starts at 5 feet from the power source. I now have exactly 16 feet to go underneath the cabinet. How would I take account for that 5 feet of extra wire hiding in the cabinet or do I account for that? I’m assuming that 5 feet will still make the end of run, dim because now the run is longer than 16 feet, correct?
Great question, the 5 feet will not make a big difference. nor will it make it dim. you will be good. It's when the wire run starts hitting 60 or 80 feet and longer and depending on the length of the LED strip is where you need to consider a thicker gage wire.
@@thebesthowtobyclem6908 thank you for response. Is there a such thing as too much wattage from power supply to led lights?
Yes, you only want about 20% over
@1:30 Does this mean that a 5050 RGB LED Strip of 5M will consume 96Watts of power? Is it the same for similar WarmWhite LED Strips?
If so, how/why are LED's labelled 'economical/efficient' please?
I will not be able to answer your whole question, but what I can answer is that a 5050 RGB will use what the label says 96w only if all 3 LED colors is being used at the same time to create a white color. If you turn the RGB to a white color, then and only then it will use max amount of W. If you only use one color like blue or red or green, it will use 1/3 of the power. If you want teal, orange, purple, pink, etc. then it will use 2/3 of the power, that is because it will need two light diodes to create these colors. This particular LED sound pretty bright you can install other LED that does not required to be that bright, but remember that you are covering about 16'3" of LF.
@@thebesthowtobyclem6908 Thank you for the explanation. 👍
Even 1/3 of 96 means 32W of power....phew...
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Hi I have a question I bought a 5m Reel cold white 6-8W /m and I want these exact measurments 1. 50cm, 80cm, 30cm and I bought an other reel cold white with 7-8W /m and I have this measurment 3.25m can you please tell me what type of transformer do I need please thanks :)
If you look in my YT channel , I have several videos that takes you step by step in how to figured out the correct PS.
Is it possible for a power supply to have too many watts? I've learned that I need a 12v 50W power supply, but would a 12v 100W or even a 150W work? (I'm thinking about increasing the length in the future) Thank you!
You can if you are planning to add more in the future
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Hello, the led strip can have 5Mts and that corresponds to 204W but if I cut the strip and only need 3 Mts then the calculations are already less right?
17 W/m x 5Mts = 85
85 x 2 = 170
170 x 20% = 34 +170 = 204
I need 3 mts so I'm going to cut the led tape and pass:
17 W/m x 3Mts = 51
51 x 2 = 102
102 x 20% = 20.4 +102 = 122.4 W rounded to 150W
Right?
That is correct. I'm glad that you were able to figured it out.
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3:30 hi I calculated with this method and I get 60w
30w x 20% = 600 is that means 60w? If it is I can find 60w power supply. Should I choose to buffer power supply more than 60w or can I use 60w power supply?
I do not see how you reach 60W from 600. Can you text me the whole formula that you did please.
20% of 30 is 6. Don’t forget to move your decimal.
Thank you for your informative video. I have a question please. I am setting up 4 runs of 16.4 feet RGBW. If I use a 500W power supply, it is still safe to use the 5 strand 22AWG wire, or do I need to go larger, like to 18 or 16 Gauge? Also, can all 4 LED strips be merged to the same controller, to assure accurate music synchronization? Syncing to music is the only reason I need these lights. Thank you very much!
You can still use a 22AWG wire. The only reason you would use an 18 if you have a very long run from your LED to your PS. Like 150 feet or more. You can merge all LED strips as long as the controller can handle it. You will need to check with the manufacture of the controller to see what is the max allowed. I hope this helps.
@@thebesthowtobyclem6908 This is fabulous news! My run will only be 16 feet from the PS to the furthest strip of 16.4 feet. I really appreciate your knowledge and suggestions. Thank you very much!!!
If you like the video please give it a thumbs up. Also subscribe to my channel, in this channel I show the How To’s for RV life and much more. If you like food like we do and like to visit other places, then subscribe to my other channel. My other channel It’s All About Food & Places bit.ly/3b5qDig
how to connect 20m together to one power supply
One way to do it is to have each spool or 5m roll connected to PS or we call it home run or home base. So if you have 4 spools then you will have 4 home runs. Like I mention this is one way to do it with out soldering. I have other videos talking about this on my channel.
so i will not use them too expensive lol ill stick with le bulbs lol
Translate to Hindi
Ji
Great video. Very helpful. (Subscribe... check. Notification Bell... check) One question, if you halve the strip length and treat each half as a stand-alone strip (each strip getting its own supply of power) would that halve the power need?
First I want to thank you for subscribing. I hope I'm understanding you. Example if you have a 16 foot strip and lest just say it needs 25 watts but you want to cut the 16 in half giving you 8 feet so now you have two 8 foot strips then you will still need the 25 watts to power them both. But if you are wanting to only use one 8 foot strip then you will only need 14.5 watts to power that 8 foot strip. Please let me know if I answered your question. If not then please ask me in a different way.
👍