Checking whether the PC meter box and end board is qualified requires a series of tests and inspections. First, check whether the appearance of the meter box and end board is intact and there is no obvious damage, deformation or paint leakage. Then, check the sealing performance of the meter box and end board to ensure that the sealing strip is intact to prevent moisture from entering. Next, check whether the ground wire is firmly connected to ensure a good ground connection. Conduct insulation resistance testing to ensure that insulation performance meets specified standards. Check the tightness of each wiring point of the meter box and end board to prevent loosening or corrosion. Use a resistance tester to check the resistance value of the meter box and end board to ensure it is within the qualified range. For PC meter box and end boards, its fire resistance also needs to be checked. Finally, use ammeter, voltmeter and other equipment to conduct electrical performance testing to verify the normal operation of the circuit in the meter box and end board. These inspections can be carried out by professional electricians or relevant qualified units to ensure the safety and compliance of the PC meter box and end board.