In the home electrical system, the lighting electrical ready board is the core control center, carrying key functions such as circuit distribution and overload protection. With the increase of household appliances and high-power appliances, the demand for household electricity is continuously rising. Therefore, reserving future expansion space in the design and installation stage of electrical ready boards has become an important prerequisite for ensuring electrical safety and improving living comfort.

Reserving expansion space is not simply about increasing the size of the enclosure, but rather about coordinating from multiple dimensions such as structural layout and component configuration. In terms of box selection, standard boxes with larger dimensions should be preferred, with at least 2-3 empty circuit positions reserved for new electrical wiring ports. The internal layout needs to be planned reasonably, and sufficient spacing should be reserved for the installation of circuit breakers, leakage protection and other components to avoid space congestion and disorderly wiring when new components are added later, while also facilitating maintenance and repair.

In the long run, reserving expansion space can effectively reduce the cost of later renovation. If there is no expansion margin in the initial electrical ready board and the household electricity load increases, it is necessary to replace the box and reconstruct the circuit, which not only consumes manpower and material resources, but may also cause damage to the wall structure. By reserving space in advance, circuits and components can be directly added to meet the increasing demand for electricity and ensure the stable operation of the circuit system.

In addition, reserving expansion space can also enhance electrical safety. Overload is one of the main safety hazards in household circuits. The reserved empty circuit can achieve electrical zoning control, avoiding accidents such as short circuits and fires caused by excessive load on a single circuit. Especially for newly built residential or renovated households, fully consider the potential for electricity growth in the next 5-10 years, and make lighting electrical ready boards a "reassurance pill" for household electricity safety.