It is often found after installation: its two-layer board does not have a special grounding bolt, the cross-section of the protective ground wire is small, and the openable door equipped with electrical appliances does not use bare copper cords Reliable connection with metal. It is often found after installation: its two-layer board does not have a special grounding bolt, the cross-section of the protective ground wire is small, and the openable door equipped with electrical appliances does not use bare copper cords Reliable connection with metal. Lighting distribution boxes (boards) are not inspected. Lighting distribution boxes (boards) protection lines are not in place, and line diameters are not in line with each other. The name of the circuit is not indicated in the brake of the lighting distribution box (board). Secondly, the structure of the meter box and small power distribution unit. The Electrical Distribution Box is a very important part of the power system, improper installation will cause a lot of danger and loss.
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