A system for managing loads and detecting outages over electric power lines, comprising: a. a plurality of wireless passive temperature sensors each of which being attachable to bare conductors of said electric power lines, at line junctions or lines' (15,16) splitting points, for sensing temperatures generated by the currents flow in said bare conductors; b. a plurality of Current Measurement Units CMUs, each including a Hall Effect Sensor/Switch, the plurality of CMUs being mounted on poles or towers carrying said electric power lines, and being adapted to: b.1) manage loads by wirelessly reading the temperature sensed by said wireless passive temperature sensors and perform RMS current measurements in said electric power lines at any voltage levels, by using conversion tables for converting temperatures into current values flowing through said electric power lines; b.2) detect outages by determining, according to said Hall Effect Sensor/Switch, between which adjacent line junctions or lines' (15,16) splitting points said outages occur; and c. one or more reference temperature sensors attached to one or more reference temperature conductor(s) respectively, and being of the same type as said electric power lines and exposed to the same environmental conditions as the electric power lines, the one or more reference temperature conductor(s) not carrying current, for providing an ambient temperature indication to said plurality of CMUs, which is measured on said reference temperature conductor(s) at measured splitting point(s). a. a plurality of wireless passive temperature sensors each of which being attachable to bare conductors of said electric power lines, at line junctions or lines' (15,16) splitting points, for sensing temperatures generated by the currents flow in said bare conductors; b. a plurality of Current Measurement Units CMUs, each including a Hall Effect Sensor/Switch, the plurality of CMUs being mounted on poles or towers carrying said electric power lines, and being adapted to: b.1) manage loads by wirelessly reading the temperature sensed by said wireless passive temperature sensors and perform RMS current measurements in said electric power lines at any voltage levels, by using conversion tables for converting temperatures into current values flowing through said electric power lines; b.2) detect outages by determining, according to said Hall Effect Sensor/Switch, between which adjacent line junctions or lines' (15,16) splitting points said outages occur; and b.1) manage loads by wirelessly reading the temperature sensed by said wireless passive temperature sensors and perform RMS current measurements in said electric power lines at any voltage levels, by using conversion tables for converting temperatures into current values flowing through said electric power lines; b.2) detect outages by determining, according to said Hall Effect Sensor/Switch, between which adjacent line junctions or lines' (15,16) splitting points said outages occur; and c. one or more reference temperature sensors attached to one or more reference temperature conductor(s) respectively, and being of the same type as said electric power lines and exposed to the same environmental conditions as the electric power lines, the one or more reference temperature conductor(s) not carrying current, for providing an ambient temperature indication to said plurality of CMUs, which is measured on said reference temperature conductor(s) at measured splitting point(s).