Copper vs Aluminum Electrical Installation: Twisted Pair vs Terminals for Separating Apartment

Hello!

At the outset, I would like to apologize if there was already such a topic.


I am after replacing the electrical installation (from aluminum to copper) in the apartment - only for sockets, the light is on the aluminum one, the meter and plugs are also replaced (automatic machines).

The problem is as follows: I have a cable in a box to separate the rest of the apartment - the electrician who installed the meter and connected the cable said to separate it using the "twisted pair" method, while the other electrician said that the twisted pair can be done if you connect to the device's electrical network low power consumption and ordered to do it not on a twisted pair, but on "terminals".

Now the question of who should I listen to?
At the moment, only one room is connected to the copper installation, and the rest is still made of aluminum, I put the cables under the plaster myself, but due to the fact that I do not know electricity, I entrust all connections to a specialist.

The box with the cables for the distribution looks as follows:


the cable on the left leads to the rest of the apartment. It is 1.5 mm and the one on the right is already plugged into the socket and it is 2.5 mm. The electrician said that you can give 1.5 mm for the rest of the apartment for things such as TV, radio, vacuum cleaner, etc.

On the other hand, the terminals that were sold to me and recommended for separation look as follows: Are they suitable? for such a separation?



And one more problem that is fought quite often - on which side should the phase in the socket be? because from what I read it should be on the left side from the front of the socket and it should be a blue cable, while in my case the phase is on the black cable.




I would be very grateful for the advice on how to separate the above-mentioned cables and the correct connection of the cables to the socket.

Thank you in advance for your answer. Regards.

Hello!
230V sockets, as in the attached photos, are connected correctly, i.e.
left phase, right zero. As for the colors:
phase - black color, neutral (neutral) blue, earth (protective) yellow-green. I recommend connecting to the terminals, not twisted pair.
If you have any questions, I will answer them by 6 p.m.
Regards Miecio.

Hello.
I have always been a supporter of screw connections, but for some time I have been using Wago installation couplings. It is fast and comfortable.
http://www.elenet.pl/product_info.php?products_id=11652 " target="_blank" rel="nofollow noopener ugc" class="postlink inline" title="" > http://www.elenet.pl/product_info.php?products_id=11652
Regards.

WAGO clamps have been used practically since they entered our market for good. I have never had a failure on such a connector or on screw terminals several times. I definitely recommend it

Hello

Quote:

the cable on the left leads to the rest of the apartment. It is 1.5 mm and the one on the right is already plugged into the socket and it is 2.5 mm. The electrician said that you can give 1.5 mm for the rest of the apartment for things such as TV, radio, vacuum cleaner, etc.

I don't want to be smart but you did it unprofessionally, not to say wrong. Why did you put a wire smaller than on the socket for the power supply of the "rest" of the apartment?
The rule is:
lighting cable - 1.5mm2 in copper,
2.5mm2 cable for sockets and it does not matter whether they are to power the bedside lamp by the bed or the kettle in the kitchen now.

In addition, a protection should be used when the conductor cross-section changes from a larger to a smaller one.

warbipower wrote:

Hello

Quote:

the cable on the left leads to the rest of the apartment. It is 1.5 mm and the one on the right is already plugged into the socket and it is 2.5 mm. The electrician said that you can give 1.5 mm for the rest of the apartment for things such as TV, radio, vacuum cleaner, etc.

I don't want to be smart but you did it unprofessionally, not to say wrong. Why did you put a wire smaller than on the socket for the power supply of the "rest" of the apartment?
The rule is:
lighting cable - 1.5mm2 in copper,
2.5mm2 cable for sockets and it does not matter whether they are to power the bedside lamp by the bed or the kettle in the kitchen now.

In addition, a protection should be used when the conductor cross-section changes from a larger to a smaller one.

What am I supposed to do now ?? I did it as the first electrician told me, if you could give me a solution to this situation now, I would be grateful. I will describe it more precisely:

The 1.5 mm cable goes to the other room and there is a double socket with grounding, from this socket there is also a second 1.5 mm cable to the next room also to a double socket with ground and there it ends.
Both sockets will be connected to televisions, a lamp, an electric watch, a satellite tuner, a dvd (can, for example, a vacuum cleaner also be possible?)

Hello

I don't know what your electrician's intentions were, maybe you wanted to do the installation at a low cost? Perhaps you said that you will not connect anything but a lamp and a TV to these sockets, and a 1.5mm2 cable is cheaper than 2.5mm2, so fearing for your pocket, he advised you to put 1.5mm2?
Some people argue that the 1.5mm2 load capacity is 19A, and the security of your apartment is 20A, so "half a half" will stand it.

And I'm just telling you how it is that 2.5mm2 should be given for sockets and 1.5mm2 for lighting.

Quote:

I put the cables under the plaster myself

you had to ask the electrician what cable. If you did it and he advised you 1.5mm2, well ........ such times ...... today even a baker can become an electrician in a few days ...... (not offending bakers)

PS. Despite such a small load, I would use 2.5mm2

warbipower wrote:

Hello

I don't know what your electrician's intentions were, maybe you wanted to do the installation at a low cost? Perhaps you said that you will not connect anything but a lamp and a TV to these sockets, and a 1.5mm2 cable is cheaper than 2.5mm2, so fearing for your pocket, he advised you to put 1.5mm2?
Some people argue that the 1.5mm2 load capacity is 19A, and the security of your apartment is 20A, so "half a half" will stand it.

And I'm just telling you how it is that 2.5mm2 should be given for sockets and 1.5mm2 for lighting.

Quote:

I put the cables under the plaster myself

you had to ask the electrician what cable. If you did it and he advised you 1.5mm2, well ........ such times ...... today even a baker can become an electrician in a few days ...... (not offending bakers)

PS. Despite such a small load, I would use 2.5mm2

I mean, it was a general renovation of the apartment and as it happens during such renovations a little chaos (at least with me), the electrician came, said what to buy, after the purchase he changed the meter, plugged the cables, and I put them on. I trusted the advice of an electrician, - there was no question of doing it at a low cost, I wanted to do it once in a long time - you can see I miscalculated. I would be able to change this cable to 2.5 mm, but it is already overhauled, and I would rather not screw around again :(

Quote:

In addition, a protection should be used when the conductor cross-section changes from a larger to a smaller one.

What security?

edit: After thinking - but I will change to 2.5 mm, there is no point in risking it, especially because I wanted to do it once, and that's good.

Thank you to everyone for the answers and advice.

Regards

Quote:

Quote:
In addition, a protection should be used when the conductor cross-section changes from a larger to a smaller one.


What security?

There are such ways of laying wires to sockets:

A 2.5mm2 cable is led out from the main switchboard in an apartment or some building and led to the box in the room farthest from the switchgear, and then 1.5mm2 from the room closer to the switchgear is attached to this cable.
You shouldn't do that.
All sections should be laid with a 2.5mm2 cable

Quote:

A 2.5mm2 cable is led out from the main switchboard in an apartment or some building and led to the box in the room farthest from the switchgear, and then 1.5mm2 from the room closer to the switchgear is attached to this cable.

I doubt an electrician will do that. Besides, why can't the power supply for lighting be supplied with a 2.5 mm? cable (to the box) and then be dissipated with a 1.5 mm? cable?

And so, out of curiosity, I will ask - what will be the consequences if the sockets are connected to a 1.5 mm cable? short circuit?

and I also understand that there must be a greater load then, eg washing machine, iron, dryer? because it seems to me that two tvs are not too heavy a load.

If you have finished the renovation of the apartment, there is no point in breaking the walls from scratch.
1.5 mm cable can withstand the loads of TV, iron and even a portable heater. Strong connections in installation boxes are important,
you may need to invest and buy a recommended weight.
Item Miecio