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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.
Parents
  • Higher rated circuits has a much lower R1+R2, producing voltage drop on the transformer and in turn a lower touch voltage whereby disconnection can be longer without worry of physiological harm.

    I think this was discussed before, and I still think that's a dangerous assumption. Take a typical 63A BS 88-3/BS1361 fuse (commonly used for distribution circuits in domestics) - Max Zs for 5s is 0.68Ω so fault currents could be as low as 338A - is that sort of additional load really going to collapse the output of a public supply transformer?

       - Andy.
Reply
  • Higher rated circuits has a much lower R1+R2, producing voltage drop on the transformer and in turn a lower touch voltage whereby disconnection can be longer without worry of physiological harm.

    I think this was discussed before, and I still think that's a dangerous assumption. Take a typical 63A BS 88-3/BS1361 fuse (commonly used for distribution circuits in domestics) - Max Zs for 5s is 0.68Ω so fault currents could be as low as 338A - is that sort of additional load really going to collapse the output of a public supply transformer?

       - Andy.
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