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IEC 60364 Table 48A

Former Community Member
Former Community Member
Does anyone know where I can find table 48A? I am reading of its existence, but don't know where to find it.
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  • Former Community Member
    0 Former Community Member
    gkenyon:

    There is no limit to touch voltage in IEC 60364-4-41 for TN systems (as today)


    For TT systems, same disconnection times, but touch voltage limited to 50 V by equipotential bonding. This is not the same as today.


    The disconnection times in Table 41 A (TN systems) are AC only but otherwise as they are for TN systems today, way back to 1992 at least, perhaps before ... As below for the 1999 Ed for example:


    U0        Disconnection time (s)

    120           0.8

    230           0.4

    277           0.4

    400           0.2

    >400         0.1




    So where are they getting wet locations from?


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  • Former Community Member
    0 Former Community Member
    gkenyon:

    There is no limit to touch voltage in IEC 60364-4-41 for TN systems (as today)


    For TT systems, same disconnection times, but touch voltage limited to 50 V by equipotential bonding. This is not the same as today.


    The disconnection times in Table 41 A (TN systems) are AC only but otherwise as they are for TN systems today, way back to 1992 at least, perhaps before ... As below for the 1999 Ed for example:


    U0        Disconnection time (s)

    120           0.8

    230           0.4

    277           0.4

    400           0.2

    >400         0.1




    So where are they getting wet locations from?


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