When a ground wire goes through a ferrous hole, like a metal electrical box, it acts like a choke to high frequency. Lightning surges are mostly high frequency bursts, due to overshooting the electrical discharge, and then firing some electrons back again, repeatedly, in a ringing pattern.
For a decent ground try to go as straight, and large of a conductor as possible, without passing through any metal holes. Receptacles are not good grounds for this type of protection. Great for 60Hhz faults but high frequency lightning disturbances are different.
For a decent ground try to go as straight, and large of a conductor as possible, without passing through any metal holes. Receptacles are not good grounds for this type of protection. Great for 60Hhz faults but high frequency lightning disturbances are different.