Why can't the wires go to the top?

The wires can go to the top. Wires usually follow the principle of replacing the ground with the roof, that is, replacing the space such as the ground and walls with the ceiling. Walking on the roof can avoid water pipes and water heating on the ground and avoid the influence of water pipes on wires. When testing the maintenance circuit, the wires on the roof can only be observed by opening the ceiling, while the wires on the ground need to pry open the floor tiles, which is more troublesome.

The wires can go to the top. Wires usually follow the principle of replacing the ground with the roof, that is, replacing the space such as the ground and walls with the ceiling. Walking on the roof can avoid water pipes and water heating on the ground and avoid the influence of water pipes on wires. When testing the maintenance circuit, the wires on the roof can only be observed by opening the ceiling, while the wires on the ground need to pry open the floor tiles, which is more troublesome.