Consultation on the power scheme of a private house

Anatoly asks:
Hello. We have already talked a bit earlier, did not write in that topic so that there would be no confusion. There is a circuit (already familiar to you) with two shields (1. a house shield - and 2. a household unit shield) in both panels there are 40 A input machines on the circuit (V.A. No. 1-C40 and B. A. 2-C40 ) - can this be done?
2. What is the best way to conduct wiring for lighting, as in the diagram, or for lighting not to use an RCD? Grounding is only planned so far, I will lay the wiring with a 3-wire cable ...
3. I picked up the protective devices for collecting the shield, with the next message I will attach the file, I would like to know if I picked them up correctly taking into account the circuit?
The answer to the question:
Hello! The circuit did not come, at least I do not see it, unfortunately. But I will try to answer what you already asked:
1. Well, as I understand it, one of the machines is in the shield with a counter and the other is in the utility unit and is powered from the first, remind me, or is the metering board generally separate? In general, put at least electrical panels in every room, if only you would remember that if the GENERAL input machine (which is near the meter and from which everything you have is powered) is 40A, then you cannot physically switch on two 40A shields physically power SIMULTANEOUSLY.
2. Regarding the RCD for lighting, we recently published a new article, you can read it here:https://my.electricianexp.com/en/uzo-na-osveshhenie-po-pue.html
3. Well, a circuit is needed here.
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9 comments

  • Kroyff

    Hello. The power allocated to the house (5.5 kW) has become known - here is a diagram with input automatic machines of 25A each (in the panel of the house, and in the panel of the hoeblock).
    1. Is the RCD (1-2-3-4-5) ON 25A selected correctly in the circuit?

    To answer
  • Kroyff

    While my message is on moderation, I can’t send the following message ... ..

    To answer
  • Kroyff

    Or this scheme will be more correct

    To answer
    • Admin

      To be honest, I can’t see the difference between the two schemes. Everything on it is logical and normal. The only thing that can be advised is to install an introductory machine or differential in the hosblock, so that it would be convenient to turn off everything all at once, you never know what! And even for “wet” rooms, a bath, for example, it is better to put an RCD of 10 mA, and if there are false alarms, then replace it with 30 mA.

      By the way, it seems that you and I were wondering such a power (5.5 kW 25A) then!

      To answer
  • Anatoly

    I don’t understand anything, authorization is required when sending a message ...?

    To answer
  • Naumov

    What kind of power supply is needed in cross section for an LED lamp?

    To answer
    • Admin

      Hello! Do you want to know about the cross section of the wire? Usually LED lamps consume little power, so 0.75 mm² wire is suitable, but in general if it is a stationary lamp, lay 1.5 mm² (because it is more durable), and if it’s a type of table lamp - 0.75 mm²

      To answer
  • Kroyff

    Hello.
    In the first diagram, 25A introductory machines are located in both panels.
    In the second diagram, the second shield (the shield of the hozblok) is powered from the input machine
    25 A of the first shield (shield of the house)
    What is the best way to power the second shield (the shield of the hozblok)?
    Thank.

    To answer
    • Admin

      In principle, it is the same, but the presence of an “introductory” machine in the electrical panel of the hosblock will allow to quickly disconnect everything that is powered from it in case of anything.

      To answer

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