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Ring Final

wessex
With reference to 433.1.204 and cable as installed has min capacity of 20A if protected by a 30A or 32A. If the protective device is reduced to 20A how is the new minimum as installed capacity calculated or arrived at ? I've been looking in the Electrical Installation Design Guide, but the answer is avoiding my eyes.
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    The Regulation is not referring to the total load but for typical poor design


    The regulation falls under the heading of PROTECTION AGAINST OVERLOAD CURRENT.


    It is impossible to design in good use of a ring final circuit as it is impossible to determine just what the user will plug in and where.


    Z.


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  • 0



    The Regulation is not referring to the total load but for typical poor design


    The regulation falls under the heading of PROTECTION AGAINST OVERLOAD CURRENT.


    It is impossible to design in good use of a ring final circuit as it is impossible to determine just what the user will plug in and where.


    Z.


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