Loop Impedance Calculation !!install!! -

[ Z_{internal} \approx \frac{2 \times L \times \rho}{A} ]

or more practically, ,

( Z_s = Z_e + R_{round-trip} = 0.35 + 1.446 \approx 1.796 , \Omega ). loop impedance calculation

[ I_f = \frac{V_0}{Z_s} ]

[ Z_s = Z_{external} + Z_{internal} ]