I don't think that it's possible to do that but if you're just using electrodes to transfer spark and not for the plasma arcs then you could try portal or inst (I assume that if that's the only reason you used them then you're out of wifi channels)

nope. You could have two electrodes both completely surrounded by almost anything, including the path the plasma would take to get from one to the other, and they'd still send a current to each other. You could experiment with them and see what you find though. I'm not sure about all the properties of electrodes since I rarely use them. Idk if tmp or anything would change how they interact.