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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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  • 0
    ProMbrooke:




    Thats where CPCs come in, in that they would cause the fuse or MCB to open in 0.2 seconds or less.




    Doesn't that happen anyway ... in TN systems where the loop impedance ensures operation in 0.1 s?


    The issue being, that, in TN-S systems (no RCD), you're limited in circuit length with Type C mcb's.


    Also, interested where 25 V comes into the equation here? To do that, you've got to oversize the cpc, not undersize it ... and even then, may not be possible in TN-S due to the effect of the distributor's cpc ?


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  • 0
    ProMbrooke:




    Thats where CPCs come in, in that they would cause the fuse or MCB to open in 0.2 seconds or less.




    Doesn't that happen anyway ... in TN systems where the loop impedance ensures operation in 0.1 s?


    The issue being, that, in TN-S systems (no RCD), you're limited in circuit length with Type C mcb's.


    Also, interested where 25 V comes into the equation here? To do that, you've got to oversize the cpc, not undersize it ... and even then, may not be possible in TN-S due to the effect of the distributor's cpc ?


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