African rural lighting electrical ready boards must be designed with grounding terminals, which is a core requirement for ensuring electrical safety and adapting to local working conditions. The rural power grid in Africa often faces problems such as unstable voltage, aging lines, and non-standard wiring. In addition, the rainy season is humid and the dry season is dusty, which can easily lead to insulation damage and leakage accidents; At the same time, local residents have weak awareness of electrical safety and lack professional protection knowledge. The grounding terminal can guide the leakage current into the ground, avoiding personal electric shock and equipment damage, and reducing the risk of electrical fires. Therefore, the grounding terminal is an indispensable component of the electrical ready board.

Based on the actual working conditions in rural Africa, the grounding scheme can be optimized from three aspects, taking into account practicality, economy, and ease of maintenance. One is to adopt TT grounding system, which is suitable for the characteristics of decentralized power supply in rural areas. The metal bases of the internal components of the electrical ready board are all connected to the grounding terminal, and the grounding resistance is controlled within 4 Ω. If the soil resistivity is too high, multiple grounding electrodes can be laid in parallel to reduce the grounding resistance. Secondly, optimize the grounding material and process to be corrosion-resistant and suitable for harsh outdoor environments; The grounding terminal is made of copper material to improve conductivity, and the wiring is well sealed with waterproof treatment to prevent poor contact caused by rainwater and sand erosion. The third is to simplify maintenance and strengthen protection. The grounding terminal is designed in an easy to operate position outside the electrical ready board, which facilitates regular detection of grounding resistance; Install a leakage protector in conjunction with the grounding system to quickly trip in case of leakage, ensuring dual protection of electrical safety. At the same time, post simple grounding detection signs to facilitate daily inspections by local villagers or maintenance personnel.

The optimized grounding scheme needs to be adapted to the economic conditions of rural areas in Africa, using low-cost and easy to purchase materials, with simple construction techniques and no need for complex equipment. It can meet safety requirements while reducing construction and maintenance costs, and is suitable for the actual scenario of local rural lighting and power supply.