Collision theory in electric shock risk assessment

The main protection against electric shock is the “active” measure based on preventing the persistence of the electrical hazards limiting the time duration of the risk exposure to the electric contact. For the electrical risk assessment, the analysis of the risk exposure is treated by an innovative approach in analogy with collisions problems. Therefore, in practice the protection against the indirect contact in LV systems can be characterized as conventionally safe or probable and the same contact during the fault event can result prospected safe or fatal.