A method of monitoring, metering and improving system parameters, including residual current sensitivity setpoint and response over a time period in an electrical panel for a system having at least one power incoming phase line X or multiple phase lines X, Y, Z wherein the reaction and accuracy are critical to a decision to disconnect the power line with the malfunction prior to a residual current device, RCD, operation at a standard setpoint for power cutoff, said method comprising: a. monitoring and measuring continuously natural leakage current in an electrical circuit of each of at least one line on the at least one single power incoming phase line X; said natural leakage current is affected by a load placed on each one of said at least one line, and thus, is different for each one of said at least one line, thus, in an event of electric shock, the power cutoff is at a current that is lower than the RCD setpoint of 30mA or other setpoint; b. analyzing a natural current leakage distribution in each of said at least one line by machine learning algorithm and statistical calculation to find the behavior of the natural current leakage on each of said at least one line to set a value of a normal natural leakage of the usage of each of said at least one line, and setting N days or other time period to include in an average calculation for the natural leakage value; c. setting a leakage threshold in mA that can be changed in setup mode, said leakage threshold is greater than said average calculation for the natural leakage; d. setting allowable deviation in leakage from said setpoint in mA for alert; e. setting maximum deviation in mA to disconnect currents, wherein in case the current in said at least one line exceeds the maximum deviation, the current to said at least one line is disconnected; f. measuring the difference in current between the main incoming phase and neutral lines; saving said difference in a data base as a natural leakage value for line X with a time tag; g. calculating the average value of the line X leakage in the last N time period; h. calculating the deviation of the current difference between the phase and the neutral for each load line at the present time, and the average value calculated for the last N time period for each load line; i. measuring the current in the ground conductor and comparing it to said measured difference; and j. calculating the difference between the current measured in the phase line and the neutral line and resetting maximum deviation in mA to disconnect current, such that upon exceeding the maximum deviation, the current to the panel is disconnected. a. monitoring and measuring continuously natural leakage current in an electrical circuit of each of at least one line on the at least one single power incoming phase line X; said natural leakage current is affected by a load placed on each one of said at least one line, and thus, is different for each one of said at least one line, thus, in an event of electric shock, the power cutoff is at a current that is lower than the RCD setpoint of 30mA or other setpoint; b. analyzing a natural current leakage distribution in each of said at least one line by machine learning algorithm and statistical calculation to find the behavior of the natural current leakage on each of said at least one line to set a value of a normal natural leakage of the usage of each of said at least one line, and setting N days or other time period to include in an average calculation for the natural leakage value; c. setting a leakage threshold in mA that can be changed in setup mode, said leakage threshold is greater than said average calculation for the natural leakage; d. setting allowable deviation in leakage from said setpoint in mA for alert; e. setting maximum deviation in mA to disconnect currents, wherein in case the current in said at least one line exceeds the maximum deviation, the current to said at least one line is disconnected; f. measuring the difference in current between the main incoming phase and neutral lines; saving said difference in a data base as a natural leakage value for line X with a time tag; g. calculating the average value of the line X leakage in the last N time period; h. calculating the deviation of the current difference between the phase and the neutral for each load line at the present time, and the average value calculated for the last N time period for each load line; i. measuring the current in the ground conductor and comparing it to said measured difference; and j. calculating the difference between the current measured in the phase line and the neutral line and resetting maximum deviation in mA to disconnect current, such that upon exceeding the maximum deviation, the current to the panel is disconnected.