Comment by cantrecallmypwd
17 hours ago
There's 2 kinds of CG and there's long-line-induced EM.
Ordinary -CG is 30 kA / 30 C / energy of 1 t of TNT. +CG is 10x that.
Direct hits are survived all the time by lightning rods for the past 275 years.
Long, unshielded lines of any sort can induce massive transient voltage transients (low current) that need to be protected with appropriate TVS circuits that will wear more in storm-prone areas. EMI from nearby lightning in unshielded computing systems with antennas or even without antennas can also be a factor.
A lightning rod is copper the thickness of your thumb. Anything thinner would melt. Lightning rods are expensive because thick pieces of copper cost a lot.