Quick power cord question:

As I mentioned, NO ONE is connecting batteries to insulators/dielectrics.     BUT- the extreme density of some will preclude any facts from absorption.     Of course, with no other uninformed comebacks, they'll just change the subject.      Anyone interested in actually learning something about dielectrics, can simply do a Google search on DIELECTRIC POLARIZATION.       Please note that all audio cables will register a capacitance, inductance and resistance when measured.      Whether one chooses to believe any of that matters, as regards sound quality, is moot.     The fact is; audio cables with dielectrics will have capacitance, and their dielectrics become polarized in the presence of an electric field.

"SHHH..."
 "They also still think that the electrons actually move!".
Let them keep believing it....hee hee. It's much more entertaining this way!

Personally; I don’t believe actively shielding a power cord, would provide any benefit.     otoh- With an interconnect; it’s easier to have a stronger electrical field outside the dielectric, than what’s produced by the voltage/current in the conductors.      Just my opinion.