Indoor wiring conduit installation, even to the lamps and lanterns, equipment line piping should meet the following requirements:
(1) drawings should be carefully checked before the review of the electrical construction plans and building construction plans indicated in the position of the doors, windows, walls, etc. whether or not they coincide with the construction of as far as possible to solve the problem before the construction. Construction of building doors, windows, walls and other changes should be timely notification of the installation.
(2) if the construction unit to change the location of lamps and equipment, it is best to determine before piping to avoid unnecessary losses.
(3) piping material should be carefully measured.
(4) concealed wiring piping straight along the nearest route and should reduce bending, buried in the wall or concrete pipe, the net distance from the surface can not be less than 15mm.
(5) steel pipe wiring and equipment connection, the steel pipe should be laid into the equipment. If not directly into the case, you can follow the following methods to connect:
1) in the dry room, you can add a protective hose at the exit of the steel pipe to introduce equipment; in the outdoor humid room, you can use moisture-proof hose or in the mouth of the pipe installed to set the waterproof elbow.
2) when the waterproof elbow lead wire to the equipment, the wire set of insulated hose protection, and there should be waterproof elbow into the equipment.
3) metal hose introduced into the equipment, hose and steel pipe, hose and equipment between the connection should be connected to the hose connector. Hose in the equipment to be fixed with pipe clamps, the fixed point spacing should not be greater than 1m, metal hose can not be used as a grounding conductor.
4) The height from the ground of the pipe opening of the steel pipe exposed to the ground should not be less than 200mm.