2019年9月2日星期一

Cable Laying Precautions

In which case is the cable laid in a pipe?

Pipe laying is generally used where it intersects with other buildings. roads or railways, and sometimes in densely populated areas.

What are the advantages of laying in cable ducts?

The main advantage is that it occupies less space and can withstand large loads. The cables do not affect each other and are safer.

How many cables are laid?

  1. buried directly in the ground.
  2. installed in the cable trench.
  3. installed in an underground tunnel.
  4. Installed on the inner wall of the building or on the ceiling.
  5. installed on the bridge.
  6. laid in the discharge pipe.
  7. Laying on the bottom of the water.

What is the calculation method for cable size?

How to calculate the cable size (mm²)

The wire size is a standard value specified by the standard. The wire size is actually the cross-sectional area of the wire, that is, the area of the circular cross-section of the wire, in units of mm². It is the user who selects the wire and cable according to the load of the wire and cable.

There are three standards commonly used internationally for wire sizes and dimensions: American (AWG), Imperial (SWG) China (CWG), and Imperial (SWG).

How do you see the size of the wire and cable?

What does size mean?

The size is a nominal value specified by international standards, and the size is the user selects the wire and cable according to the load of the wire and cable.
Cable size is a verbal term in construction. It is often said that the cable is mm, but actually refers to mm².
The wire size is actually the cross-sectional area of ​​the wire, which is the area of ​​the circular cross-section of the wire, in mm².