Improper selection of circuit breakers in the meter box may cause various faults. The following is a detailed analysis of these faults:

Firstly, incorrect selection of circuit breakers may result in their inability to effectively protect the wires. When there is an overcurrent situation in the wire, the circuit breaker may not be able to disconnect in a timely manner, thus laying a hidden danger of accidents. In this case, if the current is too high, it may cause serious safety accidents such as fires.

Secondly, improper selection of circuit breakers may also lead to tripping of higher-level circuit breakers, expanding the scope of power outages caused by accidents. This will not only cause unnecessary economic losses, but also increase the difficulty of maintenance and repair work.

In addition, although the miniaturization of circuit breakers brings about a beautiful appearance, it may also lead to problems with poor heat dissipation. The increase in ambient temperature inside the box will have a significant impact on the rated current of the thermal release of the circuit breaker, thereby affecting its protective performance.

Therefore, when selecting the circuit breaker in the meter box, it is necessary to fully consider the actual needs of the circuit and the performance characteristics of the circuit breaker, to ensure the correct and reasonable selection. At the same time, regular inspections and maintenance of circuit breakers should be carried out to ensure that they are in good working condition.