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Max Power for 2.5mm Copper Cable with 16A Fuse: Calculation & Reference Tables - Adam's Inquiry

budziu1 23274 6
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 12698151
    budziu1
    Level 9  
    Hello.

    I have a question. What is the maximum Power. How can a copper electric cable with a cross-section of 2.5 mm on a 16A fuse withstand?

    Are there any tables to check it or formulas to calculate it?

    Regards
    Adam
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  • #2 12698168
    gilus1
    Level 29  
    It will withstand some 3680 W. The fuse will not allow more, ie for a moment you can get even 4 kW, but only temporarily. Strength tables are best taken from the manufacturer's catalog. Remember that the way the cable is laid is important with the permissible load capacity and in extreme cases you will need a fuse smaller than 16A. If you do not know the cable manufacturer, take a catalog, e.g. from Telefonika, There are small differences in the permissible load between manufacturers.
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  • #3 12698949
    budziu1
    Level 9  
    Are you sure 3680 W? So far I have read that cables with a cross section of 1.5 mm can withstand such loads, and I have 2.5. The wire cross section does not matter?

    Regards
    Adam
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  • #4 12699015
    gilus1
    Level 29  
    It matters, but if it is protected by such a fuse, it will not withstand more than 3680 W.
  • #5 12699047
    budziu1
    Level 9  
    that is
    1.5mm at 16A = 3680W
    2.5mm at 16A = 3680W?

    I still have a connected device that consumes max 2 KW, so everything is ok.

    And how does it work with a 20A fuse? What maximum power will the 1.5mm and 2.5mm wire pull

    Regards
    Adam
  • #6 12699401
    SadekMB
    Level 15  
    Buddy, the cable can and will last, but there will be voltage drops on it (a loss that you will not use and pay the bill).

    Somewhere in the network I read that you can assume a load capacity of 1 mm2 = max 10 A, which gives us a max current for 1.5 mm2 - 15 A and a power of 3450W, and for 2.5 mm2 -25A a power of 5750W.
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  • #7 12699634
    gilus1
    Level 29  
    The sockets are to be protected with a 16A or smaller fuse. Take a look at the cable catalog, select your cable type and arrangement, and then you will get the best answer yourself. As for my colleague SadekMB's post: this can be assumed with these sections, but why, since we have all the data in the catalogs (implicitly: the manufacturer guarantees a certain strength under certain conditions, so there is no need to apply further load capacity assumptions).
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Topic summary

The discussion centers on the maximum power capacity of a 2.5mm copper cable protected by a 16A fuse. It is established that the cable can handle approximately 3680W, although temporary loads may reach up to 4000W. The importance of cable installation and manufacturer specifications is emphasized, as different manufacturers may have varying permissible load capacities. The conversation also touches on the power ratings for 1.5mm and 2.5mm cables under different fuse ratings, with a suggestion that 1mm² can typically support 10A, leading to a maximum of 15A for 1.5mm² and 25A for 2.5mm². The need to consult manufacturer catalogs for accurate load capacities is highlighted.
Summary generated by the language model.
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