LED Stair Lighting with Aluminum Profiles: Using Motion Sensor vs Variable Switches

Hello. I have to do the lighting of the stairs with aluminum profiles with led strip, and I wanted to use a motion sensor, but the client wanted to light the leds with variable switches. I'm sending the file and please tell me if it will be okay ... I think so, but I want to make sure



and now a few questions:
1) what is the cross-section of the cable from the power supply to the box? (I think wire, but what cross-section ... 2 * 1mm is enough?) and use the same cross-section between the switches? and then what cable from the power supply to the leds? (link, but what cross-section)


there are 15 degrees, the total length of the LEDs is about 13 m.

piotr2593 wrote:

I think so, but I want to make sure

It's bad !!! you are going to use the green wire as the phase correspondence wire. Place a 4x1.5mm2 cable between the switches

piotr2593 wrote:

but what cross-section ... 2 * 1mm is enough?

It is not enough that the minimum cross-section of the wires is 1.5mm2

Protection of a circuit with conductors with such cross-section not greater than 10A

And what does it have to do with the fact that these are fluorescent lamps powered by a power supply or a light bulb. The operation of the staircase switches is to be the same. Instead of a power supply and LEDs in the diagram, there may be an ordinary light bulb. The idea will be kept. ? 1mm? to power the chip and LEDs is probably enough, but 1.5mm? will not hurt.

ok, what is the cross-section from the power supply to the leds?

apart from the color of the veins, is this connection good?

DiZMar wrote:

? 1mm? to power the LEDs probably enough ...

It is not about whether it is enough, but about the fact that in installations a cross-section of less than 1.5mm2 must not be used.

piotr2593 wrote:

... the connection is good?

It is not visible from the drawing if the switches are properly connected. If you drew them schematically with the closing points shown, it would be possible to judge.

kkas12 wrote:

DiZMar wrote:

? 1mm? to power the LEDs probably enough ...

It is not about whether it is enough, but about the fact that in installations a cross-section of less than 1mm2 must not be used.

That's why I suggested 1mm? and not even thinner, but it would also be enough. You suggest 1.5mm? which is thicker than allowed.

Sorry buddy, but you suggested wrong, and I wrote it wrong (I have already corrected it) because the minimum cross-section is 1.5mm2

kkas12 wrote:

Sorry buddy, but you suggested wrong, and I wrote it wrong (I have already corrected it) because the minimum cross-section is 1.5mm2

And I believed you that the minimum cross-section is 1mm?. If, according to the regulations, the minimum cross-section in installations is 1.5mm?, I will not insist, although in my house where I live for 30 years, the installation for light bulbs is mostly made of single wires of ? 1mm? and somehow no one accused me of irregularities and I made it myself

piotr2593 wrote:

ok, what is the cross-section from the power supply to the leds?

2x0.5mm for LEDY and the main string along the stairs 2x0.75mm2 power supply in the center of the system. If you give a thicker wire to the tapes, there will be problems with deforming the tape.

piotr2593 wrote:

apart from the color of the veins, is this connection good?

For the operation, yes, but the most important conductor in the system, i.e. the protective conductor, is missing.

mawerix123 wrote:

...
For the operation, yes, but the most important conductor in the system, i.e. the protective conductor, is missing.

1. Not every installation has a protective conductor.
2.Even if in this case, where to attach it? Is "art for art" to be situated?

DiZMar wrote:

1. Not every installation has a protective conductor.

Each new installation MUST be, whether you like it or not, whether it will be used for the device today or in a year when it is replaced with a new one made of PE. End of discussion !!!

DiZMar wrote:

Even if he did, where to join him?

For the housing of the LED power supply !!!!

DiZMar wrote:

Is "art for art" to be situated?

Not permanently.

mawerix123 wrote:

DiZMar wrote:

1. Not every installation has a protective conductor.

In each new one MUST be installed, end of discussion !!!
...

For the housing of the LED power supply !!!! ...
...

My emphasis.
As you wrote "new" yourself. And who is forbidden to highlight the stairs in the "old" installation, and perhaps in this case it is. We don't know it and you wrote that "the most important". You also do not know if the power supply used by the author has a metal housing to which you would like to connect the protective conductor. Too many unknowns to suggest solutions that may not be applicable.

mawerix123 wrote:

2x0.5mm on LEDY and the main string along the stairs 2x0.75mm2 power supply in the center of the system. If you give a thicker wire to the tapes, there will be problems with deforming the tape.

and if I planned to lead the cable from the led strip to the led strip (rewind), it would be 2x0.5 or 2x0.75

piotr2593 wrote:

and if I planned to lead the cable from the led strip to the led strip

No problem with soldering the wires, even at 0.5mm, the entire power supply with a 0.5mm cable, i.e. some 0.2mm2, will probably cause a large voltage drop, and as you know, 13mb of the tape is a lot regardless of its power

DiZMar wrote:

And who is forbidden to highlight the stairs in the "old" installation, and perhaps in this case it is. We don't know it and you wrote that "the most important". You also do not know if the power supply used by the author has a metal housing to which you would like to connect the protective conductor.

An installation made today is not an old installation. And according to the law, the protective conductor must be separated from the neutral, even if it supplies the receiver in protection class II.
In this case, the protective conductor should be terminated with a clamp or, as a last resort, insulated.
Also in a box under the switch.

DiZMar wrote:

You also do not know if the power supply used by the author has a metal housing

I am not interested in what he wears. Today, in the second forest, and when it ends its life, a new fuchsia will come and will put on the one I showed, but without PE, because a year earlier, according to the TV specialist, a protective conductor was not needed. I will not discuss with you the necessity to lay the protective conductor because it is a dry discussion and for an electrician it is a matter of course.

kkas12 wrote:

...
An installation made today is not an old installation. And according to the law, the protective conductor must be separated from the neutral, even if it supplies a receiver made in protection class II.
In this case, the protective conductor should be terminated with a clamp or, as a last resort, insulated.
Also in a box under the switch.

For me (and many others), the installation is 2-wire (neutral and phase) without a protective conductor and, of course, without a differential switch. Where would I get a protective conductor separate from the neutral one?

Read Dr. Musiał.
There, he explained in a simple and accessible way how to proceed in the case of building a new installation when the part to which it will be connected does not have PE and N separated.

Leading the main cable 2x0.75, and to Leds 2x0.5, forces us to use joints. I don't really know what it would look like - can in the wall at every step? Likewise, the cable routing from one strip to the other is poor because we have to solder two wires to the strip. I usually put a separate 2x0.5 cable for each step. In this way, there are lots of wires next to the stairs, but we have at least convenience when installing the straps. And soldering the Leds in the risers is not very convenient anyway. It is also good to make a hole (depression) in the wall for the excess wire in the place where the cable goes from the wall to the strip. Provided there is a plinth in this place that will cover this opening. The cables (from the Leds) connect at the power supply. Thanks to this, we can use a controller for the stairs. There is a lot of it on alledrogo.pl. Such a good thing, but some people like it.

I have a question. Because I plan to put about 14 / 15m of Led strip. And for this there must be a suitable large power supply. How to connect a 1 m LED strip to the same power supply to check if everything is working or something will happen?

No, nothing will happen. The short bar is not a problem.