Wires, pipes, nozzles and pipe joints laid in dusty and humid places shall be sealed. The concealed wires and pipes shall be laid along the nearest route, and the bending shall be reduced: the clear distance between the surface of the box buried in the wall or concrete shall not be less than 15 mm, and the wires and pipes entering the floor-standing distribution box shall be arranged neatly, and the nozzle shall not be less than 50mm above the foundation surface.
Common ways of laying lines in electrical design and construction drawings;
1, SR: laying along the steel trunking.
2.BE: Laying along or across the roof truss.
3.CLE: placed along or across the column.
4. We: Lying along the wall.
5.ACE: laid on the ceiling where people can enter.
6.BC: Buried in the beam.
7.CLC: Buried in a column.
8.WC: Buried in the wall.
9. CC: Buried in the ceiling.
10, ACC: It is laid in the ceiling where people cannot enter.