Yup. BTW, why can't we just put a large Faraday Cage around the transformers? Simple, inexpensive, and doable tomorrow. Or am I wrong?
A Faraday cage will do nothing to protect a EVH transformer from a massive power surge traveling down power lines and overloading it’s windings.
There are no where enough adequate surge protection installed on power lines and power stations to negate the risk of catastrophic failure.
The lines feeding the transformers would act like giant fuses if that much energy ever went down them. We have all kinds of spark gaps and overvoltage arrestors such that no voltage large enough to overheat a distribution transformer could ever happen.
For any of this EMP nonsense to happen, we first must put away science and use science fiction.