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Renovating Studio: Separating PE from Neutral Wire in LV and 12VDC Installation

prosiak_wej 9654 7
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  • #1 16664819
    prosiak_wej
    Level 39  
    Hi!
    I am in the process of renovating my studio, eventually I will build a LV and 12VDC installation from scratch. The problem is that there is a four-wire installation in the house and any sockets in the walls go on two wires with no pin attached. There is also a two-core cable - N and L coming to the workshop. Can I separate PE from the neutral wire before the differential and connect the third wire there? As for the grounding - it is nowhere to be found. Four wires from the mast go to the meter, from the meter four wires, fuses and wires along the walls.

    Renovating Studio: Separating PE from Neutral Wire in LV and 12VDC Installation
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  • #2 16664828
    kkas12
    Level 43  
    Apart from minor inaccuracies in the nomenclature, you can do this.
    Provided that the power supply is TN-C.
    There is also the question of the cross-section of the power cord and the power you will load it.
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  • #3 16664838
    prosiak_wej
    Level 39  
    The power issues should not be offensive, because I will not exceed 3kW, and I get 2.5mm copper from the wall.
    As for the power supply (if I understand correctly - the building or even the transmission network) - I have no idea. He certainly remembers Gierek, the transformer station on four concrete legs in the field :)
    What nomenclature inconsistencies? What will I improve for the future ;)
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  • #4 16664847
    zbich70
    Level 43  
    You must first find a contract with the energy supplier (or connection conditions) and look for information there about the network system, i.e. the letters TT or TN for short.
    Because without it, it is not known whether you have PEN or N on the power supply.
    If TT circuit then you can't use N wire for protection.

    Anyway, I suggest that an electrician take care of it, who will do it as it should, take measurements and finally issue a paper on which he will sign his name and the number of the current qualification certificate.
  • #5 16664955
    CYRUS2
    Level 43  
    prosiak_wej wrote:
    Four wires from the mast go to the meter, from the meter four wires, fuses and wires along the walls.
    It's sowing from an overhead line.
    It's not so obvious that TN-C is there.
  • #6 16665105
    Anonymous
    Anonymous  
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  • #7 16665112
    prosiak_wej
    Level 39  
    Overhead line - yes (four aluminum conductors loose).
    Agreement - 30 years ago. Signed in 1987, until now unchanged. They only replaced the meter from a mechanical Pafal to an electronic Apator.
    Tomorrow I will have access to the archives, I will look for a contract with the supplier.
  • #8 16665466
    djlukas
    Level 27  
    Better call your local ZE and ask about the type of network.
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Topic summary

The discussion revolves around the renovation of a studio involving the separation of the protective earth (PE) from the neutral wire in a low voltage (LV) and 12VDC installation. The user describes a four-wire system in their house, with sockets connected to two wires lacking a pin. They inquire about the feasibility of separating PE from the neutral wire before the differential and connecting it to the third wire. Responses emphasize the importance of understanding the power supply system (TN-C or TT) and recommend consulting the energy supplier for network type verification. It is suggested that a qualified electrician should handle the installation to ensure safety and compliance with regulations.
Summary generated by the language model.
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