After the installation of the meter box, a series of tests are indeed required to ensure its normal operation and electrical safety. Here are some necessary testing items:

Appearance inspection: Firstly, the electric meter box should be visually inspected to observe whether there is any damage, deformation, cracks, etc., and at the same time, check whether the wiring terminals of the electric meter box are intact and free of oxidation, looseness, and other phenomena.

Insulation resistance test: Use an insulation resistance tester to test the insulation performance of each component inside the meter box, ensuring that it meets safety standards.

Power on test: Verify whether all functions of the meter box are normal. During testing, it should be ensured that all components inside the meter box are connected correctly and securely, and then each branch switch should be closed in sequence to observe whether the indicator lights, voltmeter, ammeter, and other indicators are normal.

Protection function testing: Meter boxes usually have safety protection functions such as overload protection and short circuit protection. These protection functions need to be tested to verify their effectiveness.

In summary, conducting the above tests after the installation of the meter box is an important step to ensure electrical safety and the normal operation of the meter box.