Brass terminal blocks should be used in lighting electrical Ready Board Box in rural Africa.
Based on the core principles of safety and reliability, it is not recommended to use aluminum terminal blocks mainly because:
The connection reliability of aluminum terminal blocks is poor: the surface of aluminum is prone to forming non-conductive and hard oxide films, which can increase contact resistance and cause local overheating, making it one of the hidden dangers of electrical fires. Especially in harsh environments such as temperature differences and humidity that may exist in rural Africa, this problem will become more prominent. In contrast, brass material connections showed minimal resistance changes in the experiment, while aluminum alloy connections showed significant resistance increases in over 70% of the samples.
The conductivity of aluminum terminal blocks is weak: brass has a much higher conductivity than aluminum. Under constant current conditions, selecting brass terminal blocks can effectively reduce energy loss, which is particularly important for rural areas with unstable power supply.
The mechanical strength of aluminum terminal blocks is low: Aluminum has low mechanical strength and is prone to deformation in repeated tightening or vibration environments, leading to loose connections.
Thickness and width of brass terminal block
brass terminal blocks (usually referring to brass bars used as busbars or grounding bars) do not have a fixed single size, and their specifications are determined by the actual current carrying requirements (current carrying capacity). In lighting electrical ready boards, the common current carrying range is usually around 32A to 100A.
What is the approximate total current of the lighting electrical ready board planned for rural Africa. Purchase and produce brass bars with thickness and width specifications based on specific current values.