Power on operation test of electric meter box

a. Before the test, it is necessary to carefully check the internal wiring of the meter box to meet the electrical schematic diagram, confirm that all wiring is correct and the insulation resistance meets the requirements before conducting the power on test;

b. After the components are powered on, the voltage at the outlet end shall be correct;

c. There is no jamming and overload phenomenon in the opening and closing test of the electrical component switch;

d. For leakage type components, the start test button should have protection action phenomenon;

e. Confirm that all outgoing lines, switches and meter connections are corresponding, and can not be confused or misplaced.