The rural environment in Africa is unique, with frequent heating of components in electrical Ready Board Box, which is often caused by a combination of environmental, load, selection, and installation issues.
One is the environmental climate factor. The local area is hot and humid, with a large temperature difference between day and night, as well as frequent sandstorms and humid fog. The heat dissipation space inside the box is limited, and dust accumulates on the surfaces of switches and terminals, blocking heat dissipation gaps and reducing component heat dissipation efficiency, accelerating temperature rise.

The second issue is the problem of load and electricity consumption. Rural power lines are disorderly, with private connections and mixed use of high-power appliances. Long term overloaded operation and unbalanced single-phase loads on the lines lead to current overload and continuous overheating of components.

Thirdly, there is insufficient selection and configuration, poor adaptability, and some equipment is not selected for high temperature environments. The wire diameter is too small, and the connection terminals have poor contact. Loose joints and oxidation will increase contact resistance, generating a large amount of heat after power on. At the same time, there is a lack of heat dissipation and overload protection accessories.

Solution: Select specialized electrical components that are resistant to high temperatures, dust, and moisture, increase the wire diameter, tighten all wiring terminals, polish oxidation joints, and reduce contact resistance; Reasonably allocate single-phase electrical loads, prevent overloading, and install overload circuit breakers and overheating protection devices; Regularly clean the dust inside the box and ensure proper sealing and moisture-proof protection; Optimize circuit layout, reduce winding and accumulation of circuits, ensure air circulation, control heat hazards of components from the source, and ensure long-term stable outdoor operation.