As you realize dirty insulators might pass electrical existing to be a flash-over. This flash-over can demolish the insulator and cause an earth leakage fault. The efficiency losses linked with wireless transmission of electric power could well be high, and with existing technological know-how would not likely be cost effective. https://beckettyqjdz.blogs100.com/30340070/new-step-by-step-map-for-outdoor-speakers