Does every unit of the high-rise building have a master list? How to wire?

There is a master table, which can be connected through property consultation, but not privately.

The three-phase load of the power line is basically average, and there is a distribution box in the floor shaft, which has a floor master table and a sub-table for each household.

The steel bars in buildings and columns, as grounding wires, are directly connected with the earth, which can also be called safe return lines. Sending high pressure directly to the earth in times of danger is regarded as a lifesaver. Due to poor insulation performance or humid environment, the shells of household appliances and equipment will have certain static electricity, and in serious cases, electric shock accidents will occur.