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) glued to wooden boards and attached to the ceiling so that the LED strips will reflect off the white ceiling.

However, that's where my knowledge ends about LED strips. I cannot find extra bright LED strips for sale anywhere in Germany and I am not sure how to connect them? I am able to probably run a cable from the end of the strips down the wall and connected to a socket. Would this work? What do I need?

  • I have not seen LED light strips that were bright enough I would consider it an application meant to brighten a room. I just googled for a "Light String" or "Light Rope" and here is an example: lights.com/… I wouldn't consider that a good application for a product like that. Amazon carries various ones too. I'd cinsider more candlebra style.
    – noybman
    Commented Aug 20, 2017 at 15:16
  • candelabra style? @noybman what do you mean? Commented Aug 20, 2017 at 17:59
  • I was referring to something like this: allightingltd.com/cutsheets/AL9050I.pdf as it would certainly be bright, and mountable on a board. Still a project, and you'd have to size the wires/fuse/breaker accordingly. You could go fluorescent, reversed on a board (LED compromise: pinterest.com/pin/340092209339816753). @Harper's answer will work if you find a reasonably bright LED strip, they probably exist, but it could take some hunting,
    – noybman
    Commented Aug 20, 2017 at 20:15
  • @noybman thanks for the references to the candelabra style lighting. Commented Aug 21, 2017 at 8:29

1 Answer 1


They make LED rope lights which are embedded in plastic and are often 230V. With these, the LEDs are difficult to aim since the rope twists. Hey are also not particularly bright.

They also make LED strip lights which have adhesive backs and operate on 12 volts DC. You probably want this. 12 volts is safer for the method you want to build this. Brightness is not a problem with these - with double density (120 lights per metre, 9.6 watts per metre, triple that for RGB) you will have more light than you may want. These strips can be cut every 25-100mm depending on density and voltage. Examples: regular 60/m ...waterproof 120 LED/m... RGB sleeved, addressible

I would not even try to buy these locally. Any local seller will have very small selection, and/or very high prices. You want the large selection you can get on the Internet.

These systems are custom by nature. Not terribly hard to hook up, but you need to learn the craft involved. You would need

  • a 12 volt supply of appropriate size
  • if color strips, an RGB controller; if white, a dimmer if you want one.
  • amplifier(s) if using a controller or dimmer
  • appropriate wiring methods to attach to the strips at as many points as possible.

To install them: they typically have adhesive backs. You cut sections to length (at the designated cut lines). They must install straight: they can bend, but only in one direction (in which they are spooled). They make variants where the LEDs emit out the edge instead of out the top, if that helps.

Make sure the surface is sealed and dust-free. For instance if you tried to adhere it straight onto plywood, the adhesive will probably let go.

If you're going on bare wood or other surface, rather than painting, try just laying a thin sheet of metal e.g. aluminum, they sell it at hardware stores. I wouldn't use steel, it will rust. Screw that into the wood with short screws, clean/dry it, and the LED strips will adhere nicely. This will also help pull heat away from the strips, though they don't get particularly warm unless they're lit still-in-the-spool.

To wire to them, there are little solder pads on both sides of the cut lines. You can either buy slip-on connectors which will tap those cut lines... or my preference is to solder 20-22AWG wire to the pads. That is enough to handle the current of a metre or three**, but thin enough to be flexible - if you use wire that is too heavy, "the tail wags the dog" - the stiffness of connection wire pulls on the delicate strip and could potentially warp or damage the strip, or lift it off the adhesive.

** Rule of thumb, when AWG goes up by 4 units, ampacity is cut in half. 12AWG=20A 16AWG=10A 20AWG=5A etc.

  • Can you link a sample product with the specs you mention? I'm intrigued and now interested. :)
    – noybman
    Commented Aug 20, 2017 at 20:17
  • @noybman done. They are pretty cool. Commented Aug 20, 2017 at 21:09
  • Thanks @Harper do you have any comments/suggestions on how to install these? Commented Aug 21, 2017 at 8:29
  • Don't forget a proper cooling solution. Lifespan could be bad without it. Aluminium profiles are good enough.
    – FarO
    Commented Aug 23, 2017 at 15:05
  • @PauloMatos Added a few paragraphs to my answer. OlafM is incorrect about cooling being an issue, I have LED strips I've had burning continuously for 4 years 24x7, and they are laid flush right next to each other (granted, on metal). They simply don't get that warm, that will become obvious once you start working with them. Commented Aug 23, 2017 at 17:06

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.