What are the laying methods of electrical neutral pipes? CC.FC.WC stands for?

2. CC: Buried in the ceiling.

3.FC: Buried underground.

4.WC: Buried in the wall.

Extended data:

Coding and laying method of conduit

1, conduit code SC: welded steel pipe, TC: conduit, PC: hard plastic pipe, CT: cable tray, CP: metal hose, SR: steel trunking, RC: water gas pipeline II,

2. Conductor laying part: SR: laying along steel cables, CLE: laying along columns or across columns, WE: laying along walls, CE: laying along ceilings or ceilings, ACE: laying in accessible ceilings, BC: laying in beams, CLC: laying in columns, WC: laying in walls, FC: laying underground, CC:.

For reference, please refer to General Graphical Symbols for Electrical Engineering Design of Buildings published by China Institute of Building Standards and Design.

Different application fields require PVC pipes to have different functions, and the specific uses are as follows:

1. For conduits concealed in walls and buried in underground incombustible materials, as well as conduits used for decoration of ordinary houses such as rural buildings, they must conform to the Ministry of Construction standard JG3050- 199[ 1]? 8 PVC threading pipes with certain flame retardant properties and meeting the requirements of physical and mechanical properties in insulating electrical bushings and accessories for buildings should be adapted to local conditions.

2. For places with high fire risk, such as hotels, restaurants, shopping malls (large supermarkets), libraries, song and dance entertainment places and other public gathering places, when protecting the lines in the ceiling and floor, because there are many flammable and combustible substances in the ceiling and floor, flame-retardant PVC conduit with high combustion performance should be selected.

3. Fire power distribution lines and electrical lines of automatic fire alarm system should be forced to use flame-retardant PVC threading pipes that meet the standards of the Ministry of Public Security.

4. For the renovation of exposed electrical circuits, indoor decoration and secondary decoration of buildings, and renovation of old buildings (hidden in ceilings and floors), flame-retardant PVC conduits with combustion performance above B 1 must be used.

Baidu encyclopedia-threading pipe

National Building Standard Design Network-Graphics and text symbols commonly used in building electrical engineering design