# Current in delta connection

I know how to calculate current in delta connection but just for knowledge purpose I wanted to know from basics why this method(in image) of calculating phase and line current is completely wrong even for balanced load and so for unbalanced load also, so here is a circuit Of unbalanced load and that is my calculation of phase and line current (which is obviously wrong) So why this method(method of potential difference) of calculation don't work here, even though in all dc circuits this method works always so why not here?
And what is best approach to solve these types(varying magnetic flux) of complex circuits

• Ohm's law doesn't apply when there's non-constant magnetic fields involved. Jul 13, 2020 at 14:22
• Yeah but, can you give a detailed answer so that I doesn't make such mistakes afterwards? Jul 13, 2020 at 14:28

It doesn't work like that because you haven't considered the two other currents, $$\I_{BY}\$$ and $$\I_{YB}\$$. You can't just conveniently forget about them. Some part of the content of those currents flow into the load. The load is not exclusively fed a current $$\I_{RB}\$$.