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6 KWp photovoltaic installation - diagram and connection method

trzepak 291987 131
Best answers

How should I complete the wiring diagram for my 6 kWp PV installation so PGE will accept the notification, and are SEP qualifications up to 1 kV enough to report it myself?

Not quite: the replies said your diagram is missing DC-side protection and AC-side overcurrent protection, and it should also show the ZE energy meter; one answer specifically mentioned 10x38 fuse bases on the DC side [#18186434] [#18186488] [#18186888] A later reply added that you lack overcurrent protection on both sides, so the single-line drawing should include that protection set rather than just the inverter switch [#18186488] For the grid notification itself, SEP operation qualifications were said to be sufficient for PGE [#18186488] [#18186491] One commenter also noted that in some branches they additionally ask for supervision permissions, but the general answer in the thread was that SEP is enough [#18186501] [#18186491]
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  • #121 19681801
    sz.lukas
    Level 10  
    paweldre wrote:
    Hello,

    I have such a scheme, will it pass in Tauron?
    6 KWp photovoltaic installation - diagram and connection method


    Recently, I reported a micro-installation in Tauron on line and it says that the reporting scheme is unnecessary.
    Without a schematic it passed. On October 19, I submitted and on October 20 they issued an order to establish a meter. For now, I’m waiting for the installer.
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  • #122 19681810
    lary504
    Level 12  
    For Tauron, only the installer's statement is needed. Unless you have an exotic inverter and it's not listed.
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  • #123 19735440
    migazbigniew
    Level 2  
    There is no turning back from RES and most are aware of it.
    However, I wanted to make an economic point, and it is not at all
    about choosing a producer of photovoltaic components, supplier of system solutions,
    or the methods of financing. My point is that when discussing technical issues
    we are forgetting a certain embarrassing financial problem concerning - according to various institutions - about 3-4 million Poles. I mean people without the so-called creditworthiness, and those who use residential buildings in which the only source of heating or hot water is a solid fuel stove, commonly known as a so-called `` soot '' stove. Please, maybe some learned adviser will tell you how people / families with an income of PLN 600 - 1200 per person, without savings, often sick, indebted or involved in other human ailments, spending all money on basic life needs, can implement ultra-modern solutions Renewable energy sources which they cannot afford even 10% of?
    I am writing about it because I have many such cases in a densely built-up area. It is easy to think and implement renewable energy projects with beneficiaries of multi-generational farms, where several people earn income, where there is a father, a pensioner, a miner, a policeman, or a military man. It is easy to convince the notary, commandant, bailiff, director, clerk in the commune, etc. to modern solutions, so it is not surprising that, while walking through the village in the evening, he holds his breath every now and then, seeing a cloud of heavy gray-yellow smoke approaching the pavement. ... Uffffff, even a Geiger-Müller counter would have something to do.
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  • #124 19735844
    wnoto
    Level 34  
    There may be an installment offer for such people. Where the leasing company determines the size of the current bill and sets installments at this level. These installments are paid until the investment is repaid. Poten bills are dropping significantly. This should happen after 5-7 years depending on the size of the installation.
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  • #125 19736174
    migazbigniew
    Level 2  
    Ok thanks for the answer. The problem is that not everyone has creditworthiness. Alimony, information in BIK
    and the smokers stay.
  • #126 19736450
    Janusz_kk
    Level 39  
    For them, there is aid from the state and municipalities. There are various programs where there is a lot of funding for replacing, for example, a soot, but then they fall from the rain into the gutter, when they replace the stove with, for example, a gas one. So not everyone can be helped. It is similar in the programs "Our new home" where such families are 'made happy' either with a fireplace as the only source of heat or with heating mats without PV on the roof, and the ceiling heating was a strange thing, lucky for these people that the latest editions are already more reasonable.
  • #127 19736711
    wnoto
    Level 34  
    more reasonable ... that is? (because I don't watch)
  • #128 19736724
    Janusz_kk
    Level 39  
    If the foil is also PV on the roof, not much, but always something, or the PC itself.
    There was also an episode (not all I watch either, more my wife) where there was a PC and PV on the roof.
  • #129 19750505
    Marko121
    Level 17  
    Hello.
    You do not even need a scheme for energy :) .. and fine, but can anyone explain to me what, according to the act (that above 6.5 kW), we need to agree on the project, etc .. Who needs it, then who needs it? the fire brigade? and the diagram too? They don't even know it. So why these agreements and projects? Anyone know? Or maybe it's just unnecessary :)
    regards

    And one more thing. If someone would like to take the project and the photovoltaic notification personally to the power industry, unfortunately they have to submit all documents including the diagram (and not on-line) ? such a trick ... :)
  • #130 19940302
    Mateusz_92
    Level 9  
    noja102 wrote:
    6 KWp photovoltaic installation - diagram and connection method I have 2 by 3 and 4 chains



    Hello, or to Energa, I'll be ok too. If so, write in the message how much for such help
  • #131 20507666
    Chris_snk
    Level 13  
    Hello colleagues, tell me whether the grounding for photovoltaic panels and from the power grid is to be connected to each other or separately to the panels and separately from the power grid
  • #132 20512540
    madart
    Level 26  
    It is to be connected to each other, it is called equipotentialization, the minimum connection cross-section is probably 6mm2

Topic summary

✨ The discussion revolves around the installation of a 6 kWp photovoltaic system, specifically addressing the connection methods and necessary protections for compliance with local regulations. The user has purchased a kit consisting of 22 Just Solar 285W panels and a Growatt 3-phase 6000W inverter. Key points include the need for overcurrent protection on both the DC and AC sides, the inclusion of a surge arrester, and the requirement for a ZE energy meter in the installation diagram. Participants emphasize the importance of proper grounding and equipotentialization between the photovoltaic system and the existing electrical installation. There are also discussions about the documentation required for connecting to the grid, including the necessity of a signed diagram and the potential need for building qualifications. The conversation highlights various technical aspects, including the use of fuses, the configuration of strings, and the implications of regulations for self-installers.
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FAQ

TL;DR: 8-day grid-approval turnaround has been reported; “SEP is enough” [Elektroda, mirex1960, post #18186491] Follow the 30-day legal window and use a single-line diagram if your DSO still asks for it [Elektroda, comer3, post #18723220]

Why it matters: Correct paperwork and protection save weeks and prevent costly rework.

Quick Facts

• Utility response time: 8–18 days reported, legal max = 30 days [Elektroda, comer3 #18723220; wello #18725777]. • Fuse-links on DC side required only for ≥2 parallel strings [Elektroda, noja102 #18187232]. • Target earth resistance ≤ 10 Ω; connect with ≥ 6 mm² Cu equipotential lead [Elektroda, tyqva #19519129; IEC 60364-5-54]. • Max string voltage SolarEdge: 900 V DC, 750 V nominal [Elektroda, 04.21 #19003679]. • Type T1 + T2 SPD recommended when building has external LPS [IEC 62305-3].

What paperwork must I send to Tauron for a micro-installation ≤ 50 kW?

  1. Filled-in notification form. 2. Single-line diagram (some branches now waive it online). 3. Panel and inverter data sheets. 4. NC RfG or EN 50549/50438 compliance declaration. 5. GDPR clause [Elektroda, wello #18687836].

Is a diagram still mandatory?

Online portals may accept applications without it, but field offices can request it later. Users who skipped the diagram were still approved within 1 day [Elektroda, sz.lukas #19681801]. Keep a simple one-line drawing ready to avoid delays.

Are SEP E/D certificates enough, or do I need a RES installer license?

Yes. The application allows "valid qualification certificate authorising operation of equipment" OR RES certificate OR building licence. Forum users filed successfully with only SEP E/D [Elektroda, vulture30 #18766453].

What DC-side protection do I need?

String disconnector is obligatory. Add 10 × 38 fuse links or string breakers only when two or more strings operate in parallel to stop reverse currents [Elektroda, Tech132 #18186888; noja102 #18187232].

When should I add a Type 1 SPD?

Install T1 + T2 surge arresters if the roof has a lightning protection system or the array lies within the rolling-sphere zone. Otherwise T2 devices at inverter and main board suffice [IEC 62305-3].

How must I earth frames, SPD and inverter?

Bond all PV frames, DC SPD PE and inverter PE to the same main earthing bar using ≥ 6 mm² Cu. Separate earth rods cause the inverter’s insulation test to fail and weaken surge paths [Elektroda, comer3 #18683418].

Utility asks for <10 Ω grounding—how can I reach it?

Drive multiple 1.5-m rods, connect them with Cu tape, and measure. If still high, add rods in a triangle or pour bentonite backfill. Users achieved 8.35 Ω with three pins [Elektroda, Misiorrr #18678713].

What timeline should I expect for meter replacement?

Forum cases show 8 days from email submission to meter swap (fastest) and 18 calendar days typical; law sets 30 days maximum [Elektroda, comer3 #18723220; wello #18725777].

Can I self-install and still claim the “Mój Prąd” grant?

Yes. Provide purchase receipts plus the NFOSiGW self-installation declaration; invoice for labour is no longer mandatory after October 2019 rule change [Elektroda, ayo007 #18191437].

How many modules can one SolarEdge string hold?

Up to 50 optimisers, but respect the 900 V cold-weather limit. Example: NU-JB395 panels allow only 16 per string on SE10K to stay below 900 V [Elektroda, 04.21 #19003679].

What’s the most common fire cause in small PV systems?

Undersized AC cables and double-lugging breakers, not the DC side; three house fires traced to this issue [Elektroda, 04.21 #19070543]. “Always terminate each conductor on its own clamp.”

Do I need Rapid Shutdown devices in Poland?

No legal requirement yet; firefighters rely on array disconnection and safe-DC features (e.g., SolarEdge drops to 1 V per module) [Elektroda, Z1mmy #18578436].

3-step: How do I notify Tauron online?

  1. Scan SEP certificate, data sheets, GDPR clause. 2. Fill web form and upload files; skip diagram if portal allows. 3. Await email confirmation and meter-swap order—track status via MojaTauron panel [Elektroda, sz.lukas #19681801].
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