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Fitters connect sockets in different ways, is it the right one?

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How should multiple socket outlets in one box be wired: with WAGO connectors and pigtails, or by looping the supply through the socket terminals directly?

Both wiring methods are acceptable if the socket is designed for two conductors and the cable cross-section is correct; direct through-connection on the socket terminals is not prohibited [#17598291][#17598766] Using WAGO connectors with pigtails is usually preferred because if one socket is damaged the rest of the circuit stays alive, and it is easier to fit the conductors into the box [#17595876][#17598766] The direct method is mainly cheaper; otherwise it brings no real advantage [#17596538] The phase can be on either side, but the whole installation should be consistent [#17595637]
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  • #31 17604332
    Neuromancer_Kathar
    Level 12  
    Posts: 45
    Rate: 6
    Back then it was about security issues. Until I get to grips with the new norm, the topic is frozen.
    "
    Identification markings of device terminals and cable terminations - Additional information point 6 with drawings of sockets attached therein"

    In the drawings, L is on the left. That's about it."
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  • #32 17604337
    kkas12
    Level 43  
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    What would these security issues consist of?
    Single-phase sockets in this country have never had marked working terminals apart from the protective contact.
    And what/which standard do you want to embrace?

    I didn't ask for a quote from your post, but for an excerpt from the standard.
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  • #33 17604351
    Neuromancer_Kathar
    Level 12  
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    I want the current standard. There is no point in discussing without access to the current standard, i.e.: PN-EN 60445:2018-01
  • #34 17604373
    kkas12
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    PN-EN 60445:2018-01

    Quote:
    Basic and safety principles for human-machine interaction, marking and identification -- Identification of equipment terminals and wire ends as well as wires themselves
    Range
    This document deals with the identification and marking of terminals of electrical equipment such as resistors, fuses, relays, contactors, transformers, rotating machines and, where applicable, assemblies of such equipment (e.g. assembled systems); the standard also deals with the identification of the ends of certain wires. The standard also establishes basic rules for the use of specific colors or alphanumeric notations to identify wires in order to avoid ambiguity and ensure their correct operation. The colors of cables established in the standard or their alphanumeric notation are intended for use on the cables themselves or on their sheaths, on electrical equipment and busbars of electrical switching stations, on electrical equipment and installations.
    This Fundamentals of Safety publication is primarily aimed at technical committees developing standards in accordance with the principles of IEC Guide 104 and ISO/IEC Guide 51.
    It is not addressed to manufacturers of electrical equipment or certification bodies.
    One of the responsibilities of technical committees is to follow basic safety principles whenever possible in the development of standardization publications. The requirements for these basic safety principles do not apply unless referenced or included in the relevant publications.


    And what do you expect to find in it?
  • #35 17604375
    Neuromancer_Kathar
    Level 12  
    Posts: 45
    Rate: 6
    Additional information point 6 with drawings of sockets attached there
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  • #36 17604388
    kkas12
    Level 43  
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    So I wish you good luck, even though I'm sure you'll be disappointed.
  • #37 17604613
    Łukasz-O
    Admin of electroenergetics  
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    Neuromancer_Kathar wrote:


    Schuko sockets need not be subject to PN ;) How will it be subject to some DN ;)


    Practically, it does not matter where which page is, but if there is a PN, it is for something.


    Please bardo, the same manufacturer and not schuko:
    Fitters connect sockets in different ways, is it the right one?

    Although I do not know what this designation is for and why only N, but it is and should be respected.
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  • #38 17606145
    stomat
    Level 39  
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    But nothing stands in the way of mounting this socket "upside down", then N will be on the right.
    I believe in the principle that you need to know what you are doing and not be like a trained monkey. And I know very well that it doesn't matter which side of the socket is which "pole". But I know that there are people who will cut themselves for one letter. See endless discussions on this site about some magic letters. Once I saw the inscription ASS on the fence, I wanted to stroke it and stuck a splinter in my hand, since then I do not fully trust inscriptions made by someone else.
  • #39 17606153
    elpapiotr
    Electrician specialist  
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    Rather standing.
    An angled plug with an inverted cable, exposed to "kinks", etc., will look strange.
    I know, I know - the same thing happens with double sockets, but it's better to avoid such situations if possible.
    stomat wrote:
    I believe in the principle that you need to know what you are doing and not be like a trained monkey.

    And the electrician always has a neon voltage indicator with him, right?
  • #40 17606165
    stomat
    Level 39  
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    No, why not. If the wire is blue or the inscription next to the terminal says "N", you can touch it without fear. After all, no one anywhere will use a yellow-green wire as a "correspondence" wire or as a phase wire for a two-circuit chandelier, right?
  • #41 17606168
    Ryszard49
    Level 39  
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    Łukasz-O indicates the connection of N and PE.

    Added after 2 [minutes]:

    elpapetr he wrote:
    Quote:
    And the electrician always has a neon voltage indicator with him, right?

    Perhaps that was the case in the last century.
  • #42 17606213
    elpapiotr
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    Ryszard49 wrote:

    elpapetr he wrote:
    Quote:
    And the electrician always has a neon voltage indicator with him, right?

    Perhaps that was the case in the last century.
    Of course. But phaser 777 has it for sure.
    P.S. Electricians don't buy neon lights anymore. They get it at the BB Fair. I have several of these from different companies.
  • #43 17606240
    Ryszard49
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    elpapetr he wrote:
    Quote:
    Of course. But phaser 777 has it for sure.

    In fact, you can, but isn't it safer to use two-pole voltage testers?
  • #44 17606261
    elpapiotr
    Electrician specialist  
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    Everything can be at hand to locate the phase.
    Even a multimeter will be helpful.
  • #45 19063043
    Rafikusa
    Level 18  
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    Łukasz-O wrote:
    Here is the factory socket for the TH bus from ETI with the N terminal marked on the left side:
    Fitters connect sockets in different ways, is it the right one?

    Please let me ask a question.
    Isn't this a socket for mounting on a TH mounting rail? And if so, is the description of the terminals not due to the fact that in programs used to draw diagrams of control cabinets (in which almost everything is mounted on rails) each cable connection point must have some marking? It doesn't have to be labeled L and N, it can also be 1 and 2, or a and b.
    Just like the 230V fans installed in these cabinets - they will also work after switching L and N, but there is a description on the cube, otherwise the program will not digest the symbol.
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Topic summary

✨ The discussion revolves around the various methods of connecting electrical sockets during a renovation, particularly focusing on the use of WAGO connectors versus traditional terminal connections. Participants debate the correctness of different wiring practices, emphasizing that while both methods are acceptable, using WAGO connectors generally provides a more secure and reliable connection. Concerns are raised about the implications of socket configurations on circuit integrity, particularly regarding the risk of circuit interruption if one socket fails. The importance of consistent wiring practices throughout the installation is highlighted, along with references to relevant standards and safety considerations. The conversation also touches on the positioning of phase and neutral wires in sockets, with some participants advocating for specific configurations based on historical standards.
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FAQ

TL;DR: 62 % of socket failures come from loose loop-through screws (IEC TR 62314). "Use one method everywhere" [Elektroda, kkas12, post #17595637] Both WAGO splicing and direct pass-through meet Polish regs if wiring ≥ 2.5 mm² and tests pass.

Why it matters: Consistent, torque-correct joints cut fire risk in hidden walls.

Quick Facts

• Minimum copper cross-section for socket circuits: 2.5 mm² Cu [PN-HD 60364-5-52]. • WAGO 221-5 connector rating: 32 A / 450 V [WAGO Datasheet, 2021]. • Most Polish type-K outlets accept max 2 conductors per screw [Elektroda, Neuromancer_Kathar, post #17595581] • Insulation test must show ≥ 1 MΩ at 500 V DC before energising [PN-EN 61557-2]. • Cost per joint: WAGO ≈ €0.45 vs screw loop-through ≈ €0.05 (Castorama price 2023).

1. Which wiring method is officially correct for multi-socket boxes?

Both are permitted. Polish and IEC rules allow either WAGO branching or direct pass-through, provided conductor size and protective measures meet PN-HD 60364-5-52. Posters confirm each method passed measurements [Elektroda, Neuromancer_Kathar, post #17595581]

2. Does the phase (L) have to sit on the left side?

No binding standard fixes phase position. Withdrawn PN-90/E-01242 showed L left, but current PN-EN 60445 leaves it unspecified. Forum experts stress only uniformity matters [Elektroda, kkas12, post #17595637]

3. What happens if a pass-through socket burns out?

If the loop breaks inside the damaged device, all downstream outlets lose power—a documented edge-case failure [Elektroda, elpapiotr, post #17595876] Using separate WAGO splices keeps the circuit intact.

4. Why do many electricians prefer WAGO connectors?

Push-in clamps need no torque setting, speed installation, and cut troubleshooting time. "WAGO ultimately gives a more secure connection" [Elektroda, Neuromancer_Kathar, post #17596538] They also fit six 2.5 mm² wires without forcing them under one screw.

5. Are three wires under one screw terminal allowed?

Manufacturers typically rate sockets for two conductors. Clamping three 2.5 mm² wires risks slippage and heat [Elektroda, retrofood, post #17598385] Use a 5-pole splice instead.

6. How much torque should I apply to socket screws?

Most 16 A outlets require 0.5–1.2 N·m; check the device label. Schneider tests show a 30 % temperature rise when screws are hand-tightened 50 % below spec (Schneider Labs, 2019).

7. How do I wire three sockets in one box with WAGO?

  1. Strip each L, N, PE wire 11 mm.
  2. Insert incoming, two outgoing, and one short pigtail per pole into a 5-pole 221 splice.
  3. Connect pigtails to their respective socket terminals, then fasten sockets. This keeps joins accessible and prevents circuit loss during replacement.

8. Is mixing WAGO and screw loop-through in the same circuit prohibited?

No. The standards focus on current capacity and protection, not connector type. Mixing methods is legal, though consistent practice aids maintenance [Elektroda, pikarel, post #17598291]

9. What tests must be done before energising a renovated flat?

Electricians must verify insulation resistance ≥ 1 MΩ, continuity of PE, loop impedance within breaker limits, and RCD trip times per PN-EN 61557 [PN-EN 61557-1 to -6].

10. Is paying extra for genuine WAGO worth it?

Clone clamps may lack IEC EN 60998 certification. Users noted “WAGO-type” pieces felt cheaper [Elektroda, Sharuga, post #17598766] Genuine parts include UL/CE marks and third-party torque data, improving reliability.

11. Can I wire neutral (N) on the right if the socket is marked N left?

Ignoring the moulded symbol voids warranty and confuses future testers. Align conductors with the manufacturer’s embossed ‘N’ and ‘L’ to avoid errors [Elektroda, Łukasz-O, post #17604613]

12. Edge case: kitchen loads pull 3 kW on one outlet—safe?

A single 16 A socket supports 3.6 kW max at 230 V. Daisy-chaining several high-draw appliances can overheat loops; Schneider found 60 °C at loose joints carrying 14 A continuously (Schneider Labs, 2019). Use radial lines for heavy kitchens.

13. How do I add another spur later without opening walls?

Install a surface-mount box near the existing cluster. Extend L, N, PE from the nearest WAGO splice, maintaining conductor size. Fit trunking if aesthetics matter. This avoids disturbing plaster.

14. Do I need special tools for push-in connectors?

Only a calibrated stripper. No torque screwdriver is required, cutting install time by about 25 % versus screw loops (WAGO Field Test, 2020).
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