The main parameters of electric detonators and their sensitivity to initiation by stray currents are considered. information on the theory and practice of protection of electric detonators from dangerous air currents of electric traction currents is presented. leaks from electric networks of mining enterprises, currents caused by statistical electricity, lightning discharges. electromagnetic fields and radiation. Conditions of stray currents occurrence and methods of their calculation are considered. detection and measurement, as well as methods of protection of electric explosive networks.