Been thinking about it also.
Might get away with a faraday bag. I have a Generac whole house and this would probably cover it.
and this for the beaker box
https://shopsolarkits.com/products/emp-shield-for-home
not sure how the lines into the house from the generator are protected or if it’s even needed.
I still don’t know enuff about it.
I found this as a possibility. The generator is mounted on a thick pad. I need to learn more too.
https://www.amazon.com/Faraday-Fabric-Military-Protection-Nickel/dp/B0C2D1R8CS/ref=asc_df_B0C2D1R8CS/?tag=hyprod-20&linkCode=df0&hvadid=673665085104&hvpos=&hvnetw=g&hvrand=4980156713103935061&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9017451&hvtargid=pla-2202205759387&th=1