Hello I’m a student learning about industrial wiring and circuits and we’re about to start learning about how to do loop impedance calculations. I have made a drawing of a three phase installation and was wondering if anyone could give me information on how I get the Ze Zs and R1 + R2. How would I do this with a three wire loop impedance meter and also how would I do it without one. Any help is appreciated, just trying to get my head round it first before we start the lessons. Photo is attached.