Where is the electrical switch in the annex of the building?

Public distribution box. The switch of the annex public distribution box of each building is in the corridor, its own switch is at the entrance of its own stairs, and the attic switch is included. In the meter box at the height of the side, this floor shares a meter box, and the switch is marked with the door number to prevent other users from switching by mistake. The public switch of this unit in the corridor is generally managed by the property electrician in the public distribution box on the first floor, and individuals are not allowed to operate it privately to avoid accidental danger.