Whether the installation holes of rural lighting electrical ready boards in Africa need to be equipped with expansion bolts depends on the firmness of the material of the installation wall. Combined with the commonly used brick and earth walls in the local area, it needs to be adapted accordingly. It is necessary to ensure the firm installation and electrical safety of the electrical ready board, as well as the convenience of rural construction, to avoid hidden dangers such as equipment detachment and leakage caused by improper fixation.

For brick and stone walls (including brick masonry and stone masonry walls), expansion bolts must be installed at the installation holes. This type of wall has a hard texture and strong load-bearing capacity. Expansion bolts can be firmly embedded into the interior of the wall through drilling and expansion fixation, providing sufficient tensile strength to ensure that the electrical Ready Board Box is stably fixed for a long time and is not easily detached due to external forces or slight vibrations of the wall. During construction, it is necessary to use stainless steel expansion bolts that are suitable for brick and stone walls. The drilling depth should be slightly greater than the length of the bolt sleeve. After cleaning the dust in the hole, tighten it. It is recommended to use one bolt at each corner of the box to ensure a balanced fixation and meet the requirements of electrical installation specifications.

For earthen walls (including rammed earth walls and adobe walls), it is not recommended to directly use ordinary expansion bolts for installation holes, and an adaptive renovation plan should be adopted. The soil wall has a loose texture and poor load-bearing capacity. Ordinary expansion bolts are difficult to effectively expand and fix, and are prone to loosening and falling off. Steel bars can be inserted into the wall at the corresponding position of the installation hole for reinforcement, or wooden bricks or cement pads can be pre embedded, and then fixed with short expansion bolts or wooden screws. This not only utilizes the fixing properties of the expansion bolts, but also compensates for the defects of the soil wall through reinforcement measures, avoiding damage to the wall structure.

In summary, the installation holes for rural lighting electrical ready boards in Africa are not uniformly equipped with expansion bolts: expansion bolts must be installed on brick and stone walls, and the correct specifications and construction standards must be selected; The earthen wall needs to be reinforced first, and then matched with suitable expansion bolts or alternative fasteners. Choosing a plan based on the actual situation of the local wall can ensure firm installation, reduce construction difficulty, adapt to the simple construction conditions in rural areas, and safeguard rural electricity safety.