There was an inventor that created shielding for cables and wires that protected them from lightning strikes and possibly EMP's. The concept was two reverse helically wrapped spirals of shielding around the center conductor. Any induced voltages would form in both sets of helical wrapping creating two different electromagnetic field that were equal and opposite of each other. They effectively nullified each other. This was tested in homes in the southeast to protect against power failures from the massive lightning storms on coastal barrier islands. The tests were highly successful. NASA was involved at some point and they tested the cabling and even installed it for the runway of the space shuttle lighting system. For some unknown reason, this failed to gain any market traction, even though the cable was commercially sold. The inventor was an old guy from North Carolina named Sam Gasque and his LRC cable (lightning retardant cable) was simple and ingenius, the cost added to production of cabling was fairly small and the benefit was incredible. Even close proximity lightning strikes did not affect sensitive electronics and electrical systems that were connected to it. They attempted to market to the military and government to protect our military and infrastructure, but they ended up going out of business. https://patents.google.com/patentUS5744755w