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Recommendable cable cross-section calculator for a photovoltaic installation?

Marius_W 18201 7
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 19534425
    Marius_W
    Level 3  
    Posts: 19
    Rate: 7
    Hello, how would you recommend an online calculator for calculating the AC and DC cable cross-section for a photovoltaic installation? Now I don't want to count from the formula every time. I used to have an English-language site, but I can't find it again.
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  • #5 19544638
    Marius_W
    Level 3  
    Posts: 19
    Rate: 7
    This is what I ment! Thanks all!
  • Online PV cable calculators for sizing conductors

    #6 21654762
    bernabyadam
    Level 2  
    Posts: 2
    You can use online cable cross-section calculators made for solar installations, for example on sites like Solar-Tools or Photovoltaik-Rechner. Just enter the power of your PV system, voltage, cable length and current – it will suggest the right cable size. Always remember to check local safety standards and, if possible, confirm with an electrician to be sure your installation is safe and efficient.
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  • PV cable calculators are unsuitable for typical solar installs

    #7 21657083
    dzidek1968
    Level 28  
    Posts: 1047
    Help: 96
    Rate: 402
    prose wrote:


    Not that I'm picking on you, but these calculators can be read at bedtime instead of a story :-) . They are as suitable for PV as I am for ballet. Note that you can choose any cross-sectional value from the range there, even 90 or 125mm2 ;-) . I have not seen PV cables like this.... For matching AC cables they might still be suitable....
    Solar cables generally available in wholesalers we have two: 4mm2 or 6mm2. It is possible to purchase 10mm2 on request, but for small installations this makes no sense. There may be thicker ones manufactured, but I don't know about that. So the question is: why does anyone need a DC calculator? I use 6mm2 in every installation because the price difference is a joke. What is there to "calculate"?
    To the Author: what kind of power installations are you building so that there is a problem with cable selection? I am asking seriously, just out of curiosity....

Topic summary

LABEL_AI_GENERATED
The discussion focuses on finding an online calculator for photovoltaic installation cable sizing, especially for AC and DC cross-section selection without manual formula calculations. Several web calculators are suggested, including Polish and general voltage-drop tools, with one RapidTables calculator noted as useful after converting cable diameter to cross-sectional area. Later replies mention solar-specific cable calculators and argue that many PV installations typically use standard DC cable sizes such as 4 mm² or 6 mm², while AC cable sizing may still benefit from calculation. The original poster confirms that the suggested calculator matches the intended tool.
AI summary based on the discussion. May contain errors.
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