A method for detecting connectivities in an electrical power distribution grid, wherein said electrical power distribution grid comprises a series of electrical power distribution lines, with each electrical power distribution line having a series of load connection points connected thereto, each load connection point including at least one client meter, wherein the method comprises: - injecting a code signal having a given duration and synchronized with a carrier signal of the power grid into a line of said electrical power distribution grid by means of at least one portable test equipment having the capacity to determine its geolocation and a clock synchronized with an external server, located in the connection of a client meter, selected from said series of load connection points; - acquiring, by said test equipment, information referring to its geolocation and the instant in time in which it injected said code signal, generating a signal injection record, and sending said generated signal injection record together with information relating to the connection point where the code signal has been injected to a remote computation server by means of a communication unit of the test equipment; - detecting the code signal by a receiving equipment located at the head end of the electrical power distribution grid, or at least upstream of the point where the test equipment is located, having the capacity to determine its geolocation and a clock synchronized with said external server; - acquiring, by the receiving equipment, the instant in time in which it detected the code signal, generating a signal detection record, and sending said generated signal detection record to said computation server by means of a communication unit of the receiving equipment; and - matching up said signal injection record and signal detection record by said computation server for correlating the connection point with a given a transmission line and a given head end, and identifying connectivity conditions of the mentioned connection point. - injecting a code signal having a given duration and synchronized with a carrier signal of the power grid into a line of said electrical power distribution grid by means of at least one portable test equipment having the capacity to determine its geolocation and a clock synchronized with an external server, located in the connection of a client meter, selected from said series of load connection points; - acquiring, by said test equipment, information referring to its geolocation and the instant in time in which it injected said code signal, generating a signal injection record, and sending said generated signal injection record together with information relating to the connection point where the code signal has been injected to a remote computation server by means of a communication unit of the test equipment; - detecting the code signal by a receiving equipment located at the head end of the electrical power distribution grid, or at least upstream of the point where the test equipment is located, having the capacity to determine its geolocation and a clock synchronized with said external server; - acquiring, by the receiving equipment, the instant in time in which it detected the code signal, generating a signal detection record, and sending said generated signal detection record to said computation server by means of a communication unit of the receiving equipment; and - matching up said signal injection record and signal detection record by said computation server for correlating the connection point with a given a transmission line and a given head end, and identifying connectivity conditions of the mentioned connection point.