ZS on secondary circuits

[Murdy]

Afternoon all,

Just a quick one, When calculating the Zs on a circuit fed from a secondary distribution unit do you add the R1+R2 of both the circuit under test and the cable feeding the second distribution unit to the Ze or is it just the R1R2 of the test circuit to the Ze ??

 

[Guest123]

You add any sub-mains and the final circuit R1+R2 to the Ze to obtain the Zs for the particular final circuit.