Do I need lightning protection on my silo?

As you might imagine, “convincing” a lightning strike to selectively travel down a marginally more conductive path provided by a rod and copper wire attached to a large steel silo is not terribly realistic.Provided the silo itself is grounded, there is no need for additional lightning protection.This is supported by NFPA 780 Standard for the Installation of Lightning Protection Systems:

“5.4 Metal Towers and Tanks. Metal towers and tanks constructed so as to receive a stroke of lightning without damage shall require only bonding to grounding electrodes as required in Chapter 4…”